From dee4dcba78baf712cab403d47d9db319ab7f95d6 Mon Sep 17 00:00:00 2001
From: Christian Krinitsin <mail@krinitsin.com>
Date: Thu, 3 Jul 2025 19:39:53 +0200
Subject: restructure results

---
 results/classifier/zero-shot/017/unknown/02572177 |  480 +++++++
 results/classifier/zero-shot/017/unknown/04472277 |  635 +++++++++
 results/classifier/zero-shot/017/unknown/13442371 |  428 ++++++
 results/classifier/zero-shot/017/unknown/23270873 |  751 +++++++++++
 results/classifier/zero-shot/017/unknown/25842545 |  261 ++++
 results/classifier/zero-shot/017/unknown/25892827 | 1136 ++++++++++++++++
 results/classifier/zero-shot/017/unknown/31349848 |  213 +++
 results/classifier/zero-shot/017/unknown/32484936 |  282 ++++
 results/classifier/zero-shot/017/unknown/57756589 | 1480 +++++++++++++++++++++
 results/classifier/zero-shot/017/unknown/70294255 | 1120 ++++++++++++++++
 results/classifier/zero-shot/017/unknown/80615920 |  407 ++++++
 11 files changed, 7193 insertions(+)
 create mode 100644 results/classifier/zero-shot/017/unknown/02572177
 create mode 100644 results/classifier/zero-shot/017/unknown/04472277
 create mode 100644 results/classifier/zero-shot/017/unknown/13442371
 create mode 100644 results/classifier/zero-shot/017/unknown/23270873
 create mode 100644 results/classifier/zero-shot/017/unknown/25842545
 create mode 100644 results/classifier/zero-shot/017/unknown/25892827
 create mode 100644 results/classifier/zero-shot/017/unknown/31349848
 create mode 100644 results/classifier/zero-shot/017/unknown/32484936
 create mode 100644 results/classifier/zero-shot/017/unknown/57756589
 create mode 100644 results/classifier/zero-shot/017/unknown/70294255
 create mode 100644 results/classifier/zero-shot/017/unknown/80615920

(limited to 'results/classifier/zero-shot/017/unknown')

diff --git a/results/classifier/zero-shot/017/unknown/02572177 b/results/classifier/zero-shot/017/unknown/02572177
new file mode 100644
index 00000000..d04b0eb2
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/02572177
@@ -0,0 +1,480 @@
+operating system: 0.816
+permissions: 0.812
+device: 0.791
+architecture: 0.788
+performance: 0.781
+peripherals: 0.775
+virtual: 0.774
+semantic: 0.770
+register: 0.767
+risc-v: 0.761
+debug: 0.756
+assembly: 0.756
+ppc: 0.753
+arm: 0.749
+graphic: 0.747
+socket: 0.742
+user-level: 0.735
+PID: 0.731
+hypervisor: 0.723
+TCG: 0.722
+x86: 0.719
+network: 0.708
+vnc: 0.706
+mistranslation: 0.693
+VMM: 0.692
+kernel: 0.689
+alpha: 0.679
+KVM: 0.669
+boot: 0.658
+files: 0.640
+i386: 0.635
+--------------------
+debug: 0.942
+files: 0.236
+x86: 0.202
+assembly: 0.118
+virtual: 0.110
+hypervisor: 0.106
+operating system: 0.081
+performance: 0.061
+PID: 0.058
+i386: 0.040
+register: 0.039
+TCG: 0.035
+network: 0.025
+kernel: 0.017
+boot: 0.016
+socket: 0.016
+device: 0.011
+arm: 0.008
+architecture: 0.007
+ppc: 0.007
+semantic: 0.006
+user-level: 0.006
+mistranslation: 0.003
+alpha: 0.003
+permissions: 0.003
+VMM: 0.003
+peripherals: 0.002
+graphic: 0.002
+risc-v: 0.002
+KVM: 0.002
+vnc: 0.001
+
+[Qemu-devel] 答复: Re:  [BUG]COLO failover hang
+
+hi.
+
+
+I test the git qemu master have the same problem.
+
+
+(gdb) bt
+
+
+#0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880, niov=1, 
+fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+
+
+#1  0x00007f658e4aa0c2 in qio_channel_read (address@hidden, address@hidden "", 
+address@hidden, address@hidden) at io/channel.c:114
+
+
+#2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞, 
+buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at 
+migration/qemu-file-channel.c:78
+
+
+#3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at 
+migration/qemu-file.c:295
+
+
+#4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden, address@hidden) at 
+migration/qemu-file.c:555
+
+
+#5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at 
+migration/qemu-file.c:568
+
+
+#6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at 
+migration/qemu-file.c:648
+
+
+#7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800, 
+address@hidden) at migration/colo.c:244
+
+
+#8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized out＞, 
+address@hidden, address@hidden)
+
+
+    at migration/colo.c:264
+
+
+#9  0x00007f658e3e740e in colo_process_incoming_thread (opaque=0x7f658eb30360 
+＜mis_current.31286＞) at migration/colo.c:577
+
+
+#10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+
+
+#11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+
+
+(gdb) p ioc-＞name
+
+
+$2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+
+
+(gdb) p ioc-＞features          Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+
+
+$3 = 0
+
+
+
+
+
+(gdb) bt
+
+
+#0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90, condition=G_IO_IN, 
+opaque=0x7fdcceeafa90) at migration/socket.c:137
+
+
+#1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at 
+gmain.c:3054
+
+
+#2  g_main_context_dispatch (context=＜optimized out＞, address@hidden) at 
+gmain.c:3630
+
+
+#3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+
+
+#4  os_host_main_loop_wait (timeout=＜optimized out＞) at util/main-loop.c:258
+
+
+#5  main_loop_wait (address@hidden) at util/main-loop.c:506
+
+
+#6  0x00007fdccb526187 in main_loop () at vl.c:1898
+
+
+#7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized out＞) at 
+vl.c:4709
+
+
+(gdb) p ioc-＞features
+
+
+$1 = 6
+
+
+(gdb) p ioc-＞name
+
+
+$2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+
+
+
+
+
+May be socket_accept_incoming_migration should call 
+qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+
+
+
+
+
+thank you.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人：王广10165992 address@hidden
+抄送人： address@hidden address@hidden
+日 期 ：2017年03月16日 14:46
+主 题 ：Re: [Qemu-devel] COLO failover hang
+
+
+
+
+
+
+
+On 03/15/2017 05:06 PM, wangguang wrote:
+＞   am testing QEMU COLO feature described here [QEMU
+＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞
+＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞ hang at recvmsg in qio_channel_socket_readv.
+＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞
+＞ I found that the colo in qemu is not complete yet.
+＞ Do the colo have any plan for development?
+
+Yes, We are developing. You can see some of patch we pushing.
+
+＞ Has anyone ever run it successfully? Any help is appreciated!
+
+In our internal version can run it successfully,
+The failover detail you can ask Zhanghailiang for help.
+Next time if you have some question about COLO,
+please cc me and zhanghailiang address@hidden
+
+
+Thanks
+Zhang Chen
+
+
+＞
+＞
+＞
+＞ centos7.2+qemu2.7.50
+＞ (gdb) bt
+＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized out＞,
+＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, errp=0x0) at
+＞ io/channel-socket.c:497
+＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞ address@hidden "", address@hidden,
+＞ address@hidden) at io/channel.c:97
+＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞ migration/qemu-file-channel.c:78
+＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞ migration/qemu-file.c:257
+＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞ address@hidden) at migration/qemu-file.c:510
+＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞ migration/qemu-file.c:523
+＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞ migration/qemu-file.c:603
+＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞ address@hidden) at migration/colo.c:215
+＞ #9  0x00007f3e0327250d in colo_wait_handle_message (errp=0x7f3d62bfaa48,
+＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞ migration/colo.c:546
+＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞ migration/colo.c:649
+＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc.so.6
+＞
+＞
+＞
+＞
+＞
+＞ --
+＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞ Sent from the Developer mailing list archive at Nabble.com.
+＞
+＞
+＞
+＞
+
+-- 
+Thanks
+Zhang Chen
+
+Hi,Wang.
+
+You can test this branch:
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+and please follow wiki ensure your own configuration correctly.
+http://wiki.qemu-project.org/Features/COLO
+Thanks
+
+Zhang Chen
+
+
+On 03/21/2017 03:27 PM, address@hidden wrote:
+hi.
+
+I test the git qemu master have the same problem.
+
+(gdb) bt
+#0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+#1  0x00007f658e4aa0c2 in qio_channel_read
+(address@hidden, address@hidden "",
+address@hidden, address@hidden) at io/channel.c:114
+#2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+migration/qemu-file-channel.c:78
+#3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+migration/qemu-file.c:295
+#4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+address@hidden) at migration/qemu-file.c:555
+#5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+migration/qemu-file.c:568
+#6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+migration/qemu-file.c:648
+#7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+address@hidden) at migration/colo.c:244
+#8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+out＞, address@hidden,
+address@hidden)
+at migration/colo.c:264
+#9  0x00007f658e3e740e in colo_process_incoming_thread
+(opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+#10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+
+#11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+
+(gdb) p ioc-＞name
+
+$2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+
+(gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+
+$3 = 0
+
+
+(gdb) bt
+#0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+#1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+gmain.c:3054
+#2  g_main_context_dispatch (context=＜optimized out＞,
+address@hidden) at gmain.c:3630
+#3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+#4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+util/main-loop.c:258
+#5  main_loop_wait (address@hidden) at
+util/main-loop.c:506
+#6  0x00007fdccb526187 in main_loop () at vl.c:1898
+#7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+out＞) at vl.c:4709
+(gdb) p ioc-＞features
+
+$1 = 6
+
+(gdb) p ioc-＞name
+
+$2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+May be socket_accept_incoming_migration should
+call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+thank you.
+
+
+
+
+
+原始邮件
+address@hidden;
+*收件人：*王广10165992;address@hidden;
+address@hidden;address@hidden;
+*日 期 ：*2017年03月16日 14:46
+*主 题 ：**Re: [Qemu-devel] COLO failover hang*
+
+
+
+
+On 03/15/2017 05:06 PM, wangguang wrote:
+＞   am testing QEMU COLO feature described here [QEMU
+＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞
+＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞ hang at recvmsg in qio_channel_socket_readv.
+＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞
+＞ I found that the colo in qemu is not complete yet.
+＞ Do the colo have any plan for development?
+
+Yes, We are developing. You can see some of patch we pushing.
+
+＞ Has anyone ever run it successfully? Any help is appreciated!
+
+In our internal version can run it successfully,
+The failover detail you can ask Zhanghailiang for help.
+Next time if you have some question about COLO,
+please cc me and zhanghailiang address@hidden
+
+
+Thanks
+Zhang Chen
+
+
+＞
+＞
+＞
+＞ centos7.2+qemu2.7.50
+＞ (gdb) bt
+＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized out＞,
+＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, errp=0x0) at
+＞ io/channel-socket.c:497
+＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞ address@hidden "", address@hidden,
+＞ address@hidden) at io/channel.c:97
+＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞ migration/qemu-file-channel.c:78
+＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞ migration/qemu-file.c:257
+＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞ address@hidden) at migration/qemu-file.c:510
+＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞ migration/qemu-file.c:523
+＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞ migration/qemu-file.c:603
+＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞ address@hidden) at migration/colo.c:215
+＞ #9  0x00007f3e0327250d in colo_wait_handle_message (errp=0x7f3d62bfaa48,
+＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞ migration/colo.c:546
+＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞ migration/colo.c:649
+＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc.so.6
+＞
+＞
+＞
+＞
+＞
+＞ --
+＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞ Sent from the Developer mailing list archive at Nabble.com.
+＞
+＞
+＞
+＞
+
+--
+Thanks
+Zhang Chen
+--
+Thanks
+Zhang Chen
+
diff --git a/results/classifier/zero-shot/017/unknown/04472277 b/results/classifier/zero-shot/017/unknown/04472277
new file mode 100644
index 00000000..c86daf50
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/04472277
@@ -0,0 +1,635 @@
+KVM: 0.890
+user-level: 0.889
+register: 0.886
+virtual: 0.876
+operating system: 0.865
+risc-v: 0.864
+VMM: 0.858
+architecture: 0.857
+hypervisor: 0.854
+permissions: 0.851
+device: 0.849
+debug: 0.849
+ppc: 0.848
+network: 0.847
+graphic: 0.846
+x86: 0.841
+performance: 0.841
+assembly: 0.841
+kernel: 0.839
+peripherals: 0.838
+boot: 0.831
+vnc: 0.828
+PID: 0.826
+TCG: 0.825
+socket: 0.824
+arm: 0.821
+mistranslation: 0.817
+semantic: 0.815
+i386: 0.805
+alpha: 0.804
+files: 0.790
+--------------------
+virtual: 0.939
+KVM: 0.879
+x86: 0.774
+debug: 0.772
+files: 0.742
+hypervisor: 0.710
+user-level: 0.641
+operating system: 0.244
+boot: 0.068
+kernel: 0.045
+PID: 0.025
+performance: 0.024
+TCG: 0.022
+VMM: 0.019
+register: 0.018
+socket: 0.017
+semantic: 0.015
+device: 0.010
+risc-v: 0.010
+network: 0.007
+architecture: 0.006
+ppc: 0.006
+alpha: 0.005
+graphic: 0.003
+assembly: 0.003
+vnc: 0.003
+peripherals: 0.002
+permissions: 0.002
+i386: 0.001
+arm: 0.001
+mistranslation: 0.001
+
+[BUG][KVM_SET_USER_MEMORY_REGION] KVM_SET_USER_MEMORY_REGION failed
+
+Hi all,
+I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
+Is there any one know this?
+The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
+```
+2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
+kvm_set_phys_mem: error registering slot: Invalid argument
+2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
+```
+The xml file
+```
+root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
+<!--
+WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
+OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
+  virsh edit instance-0000000e
+or other application using the libvirt API.
+-->
+<domain type='kvm'>
+  <name>instance-0000000e</name>
+  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
+  <metadata>
+    <nova:instance xmlns:nova="
+http://openstack.org/xmlns/libvirt/nova/1.1
+">
+      <nova:package version="25.1.0"/>
+      <nova:name>provider-instance</nova:name>
+      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
+      <nova:flavor name="cirros-os-dpu-test-1">
+        <nova:memory>64</nova:memory>
+        <nova:disk>1</nova:disk>
+        <nova:swap>0</nova:swap>
+        <nova:ephemeral>0</nova:ephemeral>
+        <nova:vcpus>1</nova:vcpus>
+      </nova:flavor>
+      <nova:owner>
+        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
+        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
+      </nova:owner>
+      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
+      <nova:ports>
+        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
+          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
+        </nova:port>
+      </nova:ports>
+    </nova:instance>
+  </metadata>
+  <memory unit='KiB'>65536</memory>
+  <currentMemory unit='KiB'>65536</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <sysinfo type='smbios'>
+    <system>
+      <entry name='manufacturer'>OpenStack Foundation</entry>
+      <entry name='product'>OpenStack Nova</entry>
+      <entry name='version'>25.1.0</entry>
+      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='family'>Virtual Machine</entry>
+    </system>
+  </sysinfo>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
+    <boot dev='hd'/>
+    <smbios mode='sysinfo'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <vmcoreinfo state='on'/>
+  </features>
+  <cpu mode='host-model' check='partial'>
+    <topology sockets='1' dies='1' cores='1' threads='1'/>
+  </cpu>
+  <clock offset='utc'>
+    <timer name='pit' tickpolicy='delay'/>
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='hpet' present='no'/>
+  </clock>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2' cache='none'/>
+      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='hostdev' managed='yes'>
+      <mac address='fa:16:3e:aa:d9:23'/>
+      <source>
+        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </interface>
+    <serial type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='tablet' bus='usb'>
+      <address type='usb' bus='0' port='1'/>
+    </input>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
+      <listen type='address' address='0.0.0.0'/>
+    </graphics>
+    <audio id='1' type='none'/>
+    <video>
+      <model type='virtio' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </video>
+    <hostdev mode='subsystem' type='pci' managed='yes'>
+      <source>
+        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </hostdev>
+    <memballoon model='virtio'>
+      <stats period='10'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+    </memballoon>
+    <rng model='virtio'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
+    </rng>
+  </devices>
+</domain>
+```
+----
+Simon Jones
+
+This is happened in ubuntu22.04.
+QEMU is install by apt like this:
+apt install -y qemu qemu-kvm qemu-system
+and QEMU version is 6.2.0
+----
+Simon Jones
+Simon Jones <
+batmanustc@gmail.com
+> 于2023年3月21日周二 08:40写道：
+Hi all,
+I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
+Is there any one know this?
+The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
+```
+2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
+kvm_set_phys_mem: error registering slot: Invalid argument
+2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
+```
+The xml file
+```
+root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
+<!--
+WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
+OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
+  virsh edit instance-0000000e
+or other application using the libvirt API.
+-->
+<domain type='kvm'>
+  <name>instance-0000000e</name>
+  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
+  <metadata>
+    <nova:instance xmlns:nova="
+http://openstack.org/xmlns/libvirt/nova/1.1
+">
+      <nova:package version="25.1.0"/>
+      <nova:name>provider-instance</nova:name>
+      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
+      <nova:flavor name="cirros-os-dpu-test-1">
+        <nova:memory>64</nova:memory>
+        <nova:disk>1</nova:disk>
+        <nova:swap>0</nova:swap>
+        <nova:ephemeral>0</nova:ephemeral>
+        <nova:vcpus>1</nova:vcpus>
+      </nova:flavor>
+      <nova:owner>
+        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
+        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
+      </nova:owner>
+      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
+      <nova:ports>
+        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
+          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
+        </nova:port>
+      </nova:ports>
+    </nova:instance>
+  </metadata>
+  <memory unit='KiB'>65536</memory>
+  <currentMemory unit='KiB'>65536</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <sysinfo type='smbios'>
+    <system>
+      <entry name='manufacturer'>OpenStack Foundation</entry>
+      <entry name='product'>OpenStack Nova</entry>
+      <entry name='version'>25.1.0</entry>
+      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='family'>Virtual Machine</entry>
+    </system>
+  </sysinfo>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
+    <boot dev='hd'/>
+    <smbios mode='sysinfo'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <vmcoreinfo state='on'/>
+  </features>
+  <cpu mode='host-model' check='partial'>
+    <topology sockets='1' dies='1' cores='1' threads='1'/>
+  </cpu>
+  <clock offset='utc'>
+    <timer name='pit' tickpolicy='delay'/>
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='hpet' present='no'/>
+  </clock>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2' cache='none'/>
+      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='hostdev' managed='yes'>
+      <mac address='fa:16:3e:aa:d9:23'/>
+      <source>
+        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </interface>
+    <serial type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='tablet' bus='usb'>
+      <address type='usb' bus='0' port='1'/>
+    </input>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
+      <listen type='address' address='0.0.0.0'/>
+    </graphics>
+    <audio id='1' type='none'/>
+    <video>
+      <model type='virtio' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </video>
+    <hostdev mode='subsystem' type='pci' managed='yes'>
+      <source>
+        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </hostdev>
+    <memballoon model='virtio'>
+      <stats period='10'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+    </memballoon>
+    <rng model='virtio'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
+    </rng>
+  </devices>
+</domain>
+```
+----
+Simon Jones
+
+This is full ERROR log
+2023-03-23 08:00:52.362+0000: starting up libvirt version: 8.0.0, package: 1ubuntu7.4 (Christian Ehrhardt <
+christian.ehrhardt@canonical.com
+> Tue, 22 Nov 2022 15:59:28 +0100), qemu version: 6.2.0Debian 1:6.2+dfsg-2ubuntu6.6, kernel: 5.19.0-35-generic, hostname: c1c2
+LC_ALL=C \
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin \
+HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=instance-0000000e,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-4-instance-0000000e/master-key.aes"}' \
+-machine pc-i440fx-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram \
+-accel kvm \
+-cpu Cooperlake,ss=on,vmx=on,pdcm=on,hypervisor=on,tsc-adjust=on,sha-ni=on,umip=on,waitpkg=on,gfni=on,vaes=on,vpclmulqdq=on,rdpid=on,movdiri=on,movdir64b=on,fsrm=on,md-clear=on,avx-vnni=on,xsaves=on,ibpb=on,ibrs=on,amd-stibp=on,amd-ssbd=on,hle=off,rtm=off,avx512f=off,avx512dq=off,avx512cd=off,avx512bw=off,avx512vl=off,avx512vnni=off,avx512-bf16=off,taa-no=off \
+-m 64 \
+-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":67108864}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,dies=1,cores=1,threads=1 \
+-uuid ff91d2dc-69a1-43ef-abde-c9e4e9a0305b \
+-smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=25.1.0,serial=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,uuid=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,family=Virtual Machine' \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=33,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc,driftfix=slew \
+-global kvm-pit.lost_tick_policy=delay \
+-no-hpet \
+-no-shutdown \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/_base/8b58db82a488248e7c5e769599954adaa47a5314","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-2-format","read-only":true,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
+-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-2-format"}' \
+-device virtio-blk-pci,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1,write-cache=on \
+-add-fd set=1,fd=34 \
+-chardev pty,id=charserial0,logfile=/dev/fdset/1,logappend=on \
+-device isa-serial,chardev=charserial0,id=serial0 \
+-device usb-tablet,id=input0,bus=usb.0,port=1 \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-vnc
+0.0.0.0:0
+,audiodev=audio1 \
+-device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
+-device vfio-pci,host=0000:01:00.5,id=hostdev0,bus=pci.0,addr=0x4 \
+-device vfio-pci,host=0000:01:00.6,id=hostdev1,bus=pci.0,addr=0x5 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
+-object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' \
+-device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x7 \
+-device vmcoreinfo \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
+char device redirected to /dev/pts/3 (label charserial0)
+2023-03-23T08:00:53.728550Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
+kvm_set_phys_mem: error registering slot: Invalid argument
+2023-03-23 08:00:54.201+0000: shutting down, reason=crashed
+2023-03-23 08:54:43.468+0000: starting up libvirt version: 8.0.0, package: 1ubuntu7.4 (Christian Ehrhardt <
+christian.ehrhardt@canonical.com
+> Tue, 22 Nov 2022 15:59:28 +0100), qemu version: 6.2.0Debian 1:6.2+dfsg-2ubuntu6.6, kernel: 5.19.0-35-generic, hostname: c1c2
+LC_ALL=C \
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin \
+HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=instance-0000000e,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-5-instance-0000000e/master-key.aes"}' \
+-machine pc-i440fx-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram \
+-accel kvm \
+-cpu Cooperlake,ss=on,vmx=on,pdcm=on,hypervisor=on,tsc-adjust=on,sha-ni=on,umip=on,waitpkg=on,gfni=on,vaes=on,vpclmulqdq=on,rdpid=on,movdiri=on,movdir64b=on,fsrm=on,md-clear=on,avx-vnni=on,xsaves=on,ibpb=on,ibrs=on,amd-stibp=on,amd-ssbd=on,hle=off,rtm=off,avx512f=off,avx512dq=off,avx512cd=off,avx512bw=off,avx512vl=off,avx512vnni=off,avx512-bf16=off,taa-no=off \
+-m 64 \
+-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":67108864}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,dies=1,cores=1,threads=1 \
+-uuid ff91d2dc-69a1-43ef-abde-c9e4e9a0305b \
+-smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=25.1.0,serial=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,uuid=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,family=Virtual Machine' \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=33,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc,driftfix=slew \
+-global kvm-pit.lost_tick_policy=delay \
+-no-hpet \
+-no-shutdown \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/_base/8b58db82a488248e7c5e769599954adaa47a5314","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-2-format","read-only":true,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
+-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-2-format"}' \
+-device virtio-blk-pci,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1,write-cache=on \
+-add-fd set=1,fd=34 \
+-chardev pty,id=charserial0,logfile=/dev/fdset/1,logappend=on \
+-device isa-serial,chardev=charserial0,id=serial0 \
+-device usb-tablet,id=input0,bus=usb.0,port=1 \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-vnc
+0.0.0.0:0
+,audiodev=audio1 \
+-device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
+-device vfio-pci,host=0000:01:00.5,id=hostdev0,bus=pci.0,addr=0x4 \
+-device vfio-pci,host=0000:01:00.6,id=hostdev1,bus=pci.0,addr=0x5 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
+-object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' \
+-device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x7 \
+-device vmcoreinfo \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
+char device redirected to /dev/pts/3 (label charserial0)
+2023-03-23T08:54:44.755039Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
+kvm_set_phys_mem: error registering slot: Invalid argument
+2023-03-23 08:54:45.230+0000: shutting down, reason=crashed
+----
+Simon Jones
+Simon Jones <
+batmanustc@gmail.com
+> 于2023年3月23日周四 05:49写道：
+This is happened in ubuntu22.04.
+QEMU is install by apt like this:
+apt install -y qemu qemu-kvm qemu-system
+and QEMU version is 6.2.0
+----
+Simon Jones
+Simon Jones <
+batmanustc@gmail.com
+> 于2023年3月21日周二 08:40写道：
+Hi all,
+I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
+Is there any one know this?
+The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
+```
+2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
+kvm_set_phys_mem: error registering slot: Invalid argument
+2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
+```
+The xml file
+```
+root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
+<!--
+WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
+OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
+  virsh edit instance-0000000e
+or other application using the libvirt API.
+-->
+<domain type='kvm'>
+  <name>instance-0000000e</name>
+  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
+  <metadata>
+    <nova:instance xmlns:nova="
+http://openstack.org/xmlns/libvirt/nova/1.1
+">
+      <nova:package version="25.1.0"/>
+      <nova:name>provider-instance</nova:name>
+      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
+      <nova:flavor name="cirros-os-dpu-test-1">
+        <nova:memory>64</nova:memory>
+        <nova:disk>1</nova:disk>
+        <nova:swap>0</nova:swap>
+        <nova:ephemeral>0</nova:ephemeral>
+        <nova:vcpus>1</nova:vcpus>
+      </nova:flavor>
+      <nova:owner>
+        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
+        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
+      </nova:owner>
+      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
+      <nova:ports>
+        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
+          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
+        </nova:port>
+      </nova:ports>
+    </nova:instance>
+  </metadata>
+  <memory unit='KiB'>65536</memory>
+  <currentMemory unit='KiB'>65536</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <sysinfo type='smbios'>
+    <system>
+      <entry name='manufacturer'>OpenStack Foundation</entry>
+      <entry name='product'>OpenStack Nova</entry>
+      <entry name='version'>25.1.0</entry>
+      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
+      <entry name='family'>Virtual Machine</entry>
+    </system>
+  </sysinfo>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
+    <boot dev='hd'/>
+    <smbios mode='sysinfo'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <vmcoreinfo state='on'/>
+  </features>
+  <cpu mode='host-model' check='partial'>
+    <topology sockets='1' dies='1' cores='1' threads='1'/>
+  </cpu>
+  <clock offset='utc'>
+    <timer name='pit' tickpolicy='delay'/>
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='hpet' present='no'/>
+  </clock>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2' cache='none'/>
+      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='hostdev' managed='yes'>
+      <mac address='fa:16:3e:aa:d9:23'/>
+      <source>
+        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </interface>
+    <serial type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='tablet' bus='usb'>
+      <address type='usb' bus='0' port='1'/>
+    </input>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
+      <listen type='address' address='0.0.0.0'/>
+    </graphics>
+    <audio id='1' type='none'/>
+    <video>
+      <model type='virtio' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </video>
+    <hostdev mode='subsystem' type='pci' managed='yes'>
+      <source>
+        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </hostdev>
+    <memballoon model='virtio'>
+      <stats period='10'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+    </memballoon>
+    <rng model='virtio'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
+    </rng>
+  </devices>
+</domain>
+```
+----
+Simon Jones
+
diff --git a/results/classifier/zero-shot/017/unknown/13442371 b/results/classifier/zero-shot/017/unknown/13442371
new file mode 100644
index 00000000..71a5ed2f
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/13442371
@@ -0,0 +1,428 @@
+TCG: 0.901
+user-level: 0.899
+peripherals: 0.889
+ppc: 0.884
+device: 0.883
+assembly: 0.877
+virtual: 0.872
+KVM: 0.872
+hypervisor: 0.872
+register: 0.871
+i386: 0.870
+operating system: 0.870
+arm: 0.867
+debug: 0.866
+mistranslation: 0.859
+vnc: 0.858
+permissions: 0.854
+graphic: 0.850
+semantic: 0.850
+PID: 0.849
+architecture: 0.846
+risc-v: 0.846
+VMM: 0.843
+kernel: 0.842
+performance: 0.841
+files: 0.837
+x86: 0.836
+socket: 0.831
+alpha: 0.819
+boot: 0.815
+network: 0.811
+--------------------
+i386: 0.997
+TCG: 0.898
+debug: 0.821
+x86: 0.754
+operating system: 0.376
+virtual: 0.277
+kernel: 0.203
+risc-v: 0.180
+files: 0.109
+PID: 0.057
+register: 0.055
+hypervisor: 0.039
+user-level: 0.033
+boot: 0.032
+socket: 0.029
+device: 0.027
+vnc: 0.025
+semantic: 0.017
+network: 0.015
+assembly: 0.010
+architecture: 0.009
+VMM: 0.008
+performance: 0.005
+alpha: 0.005
+graphic: 0.003
+permissions: 0.003
+peripherals: 0.002
+mistranslation: 0.001
+KVM: 0.001
+ppc: 0.000
+arm: 0.000
+
+[Qemu-devel] [BUG] nanoMIPS support problem related to extract2 support for i386 TCG target
+
+Hello, Richard, Peter, and others.
+
+As a part of activities before 4.1 release, I tested nanoMIPS support
+in QEMU (which was officially fully integrated in 4.0, is currently
+limited to system mode only, and was tested in a similar fashion right
+prior to 4.0).
+
+This support appears to be broken now. Following command line works in
+4.0, but results in kernel panic for the current tip of the tree:
+
+~/Build/qemu-test-revert-c6fb8c0cf704/mipsel-softmmu/qemu-system-mipsel
+-cpu I7200 -kernel generic_nano32r6el_page4k -M malta -serial stdio -m
+1G -hda nanomips32r6_le_sf_2017.05-03-59-gf5595d6.ext4 -append
+"mem=256m@0x0 rw console=ttyS0 vga=cirrus vesa=0x111 root=/dev/sda"
+
+(kernel and rootfs image files used in this commend line can be
+downloaded from the locations mentioned in our user guide)
+
+The quick bisect points to the commit:
+
+commit c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab
+Author: Richard Henderson <address@hidden>
+Date:   Mon Feb 25 11:42:35 2019 -0800
+
+    tcg/i386: Support INDEX_op_extract2_{i32,i64}
+
+    Signed-off-by: Richard Henderson <address@hidden>
+
+Please advise on further actions.
+
+Yours,
+Aleksandar
+
+On Fri, Jul 12, 2019 at 8:09 PM Aleksandar Markovic
+<address@hidden> wrote:
+>
+>
+Hello, Richard, Peter, and others.
+>
+>
+As a part of activities before 4.1 release, I tested nanoMIPS support
+>
+in QEMU (which was officially fully integrated in 4.0, is currently
+>
+limited to system mode only, and was tested in a similar fashion right
+>
+prior to 4.0).
+>
+>
+This support appears to be broken now. Following command line works in
+>
+4.0, but results in kernel panic for the current tip of the tree:
+>
+>
+~/Build/qemu-test-revert-c6fb8c0cf704/mipsel-softmmu/qemu-system-mipsel
+>
+-cpu I7200 -kernel generic_nano32r6el_page4k -M malta -serial stdio -m
+>
+1G -hda nanomips32r6_le_sf_2017.05-03-59-gf5595d6.ext4 -append
+>
+"mem=256m@0x0 rw console=ttyS0 vga=cirrus vesa=0x111 root=/dev/sda"
+>
+>
+(kernel and rootfs image files used in this commend line can be
+>
+downloaded from the locations mentioned in our user guide)
+>
+>
+The quick bisect points to the commit:
+>
+>
+commit c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab
+>
+Author: Richard Henderson <address@hidden>
+>
+Date:   Mon Feb 25 11:42:35 2019 -0800
+>
+>
+tcg/i386: Support INDEX_op_extract2_{i32,i64}
+>
+>
+Signed-off-by: Richard Henderson <address@hidden>
+>
+>
+Please advise on further actions.
+>
+Just to add a data point:
+
+If the following change is applied:
+
+diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
+index 928e8b8..b6a4cf2 100644
+--- a/tcg/i386/tcg-target.h
++++ b/tcg/i386/tcg-target.h
+@@ -124,7 +124,7 @@ extern bool have_avx2;
+ #define TCG_TARGET_HAS_deposit_i32      1
+ #define TCG_TARGET_HAS_extract_i32      1
+ #define TCG_TARGET_HAS_sextract_i32     1
+-#define TCG_TARGET_HAS_extract2_i32     1
++#define TCG_TARGET_HAS_extract2_i32     0
+ #define TCG_TARGET_HAS_movcond_i32      1
+ #define TCG_TARGET_HAS_add2_i32         1
+ #define TCG_TARGET_HAS_sub2_i32         1
+@@ -163,7 +163,7 @@ extern bool have_avx2;
+ #define TCG_TARGET_HAS_deposit_i64      1
+ #define TCG_TARGET_HAS_extract_i64      1
+ #define TCG_TARGET_HAS_sextract_i64     0
+-#define TCG_TARGET_HAS_extract2_i64     1
++#define TCG_TARGET_HAS_extract2_i64     0
+ #define TCG_TARGET_HAS_movcond_i64      1
+ #define TCG_TARGET_HAS_add2_i64         1
+ #define TCG_TARGET_HAS_sub2_i64         1
+
+... the problem disappears.
+
+
+>
+Yours,
+>
+Aleksandar
+
+On Fri, Jul 12, 2019 at 8:19 PM Aleksandar Markovic
+<address@hidden> wrote:
+>
+>
+On Fri, Jul 12, 2019 at 8:09 PM Aleksandar Markovic
+>
+<address@hidden> wrote:
+>
+>
+>
+> Hello, Richard, Peter, and others.
+>
+>
+>
+> As a part of activities before 4.1 release, I tested nanoMIPS support
+>
+> in QEMU (which was officially fully integrated in 4.0, is currently
+>
+> limited to system mode only, and was tested in a similar fashion right
+>
+> prior to 4.0).
+>
+>
+>
+> This support appears to be broken now. Following command line works in
+>
+> 4.0, but results in kernel panic for the current tip of the tree:
+>
+>
+>
+> ~/Build/qemu-test-revert-c6fb8c0cf704/mipsel-softmmu/qemu-system-mipsel
+>
+> -cpu I7200 -kernel generic_nano32r6el_page4k -M malta -serial stdio -m
+>
+> 1G -hda nanomips32r6_le_sf_2017.05-03-59-gf5595d6.ext4 -append
+>
+> "mem=256m@0x0 rw console=ttyS0 vga=cirrus vesa=0x111 root=/dev/sda"
+>
+>
+>
+> (kernel and rootfs image files used in this commend line can be
+>
+> downloaded from the locations mentioned in our user guide)
+>
+>
+>
+> The quick bisect points to the commit:
+>
+>
+>
+> commit c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab
+>
+> Author: Richard Henderson <address@hidden>
+>
+> Date:   Mon Feb 25 11:42:35 2019 -0800
+>
+>
+>
+>     tcg/i386: Support INDEX_op_extract2_{i32,i64}
+>
+>
+>
+>     Signed-off-by: Richard Henderson <address@hidden>
+>
+>
+>
+> Please advise on further actions.
+>
+>
+>
+>
+Just to add a data point:
+>
+>
+If the following change is applied:
+>
+>
+diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
+>
+index 928e8b8..b6a4cf2 100644
+>
+--- a/tcg/i386/tcg-target.h
+>
++++ b/tcg/i386/tcg-target.h
+>
+@@ -124,7 +124,7 @@ extern bool have_avx2;
+>
+#define TCG_TARGET_HAS_deposit_i32      1
+>
+#define TCG_TARGET_HAS_extract_i32      1
+>
+#define TCG_TARGET_HAS_sextract_i32     1
+>
+-#define TCG_TARGET_HAS_extract2_i32     1
+>
++#define TCG_TARGET_HAS_extract2_i32     0
+>
+#define TCG_TARGET_HAS_movcond_i32      1
+>
+#define TCG_TARGET_HAS_add2_i32         1
+>
+#define TCG_TARGET_HAS_sub2_i32         1
+>
+@@ -163,7 +163,7 @@ extern bool have_avx2;
+>
+#define TCG_TARGET_HAS_deposit_i64      1
+>
+#define TCG_TARGET_HAS_extract_i64      1
+>
+#define TCG_TARGET_HAS_sextract_i64     0
+>
+-#define TCG_TARGET_HAS_extract2_i64     1
+>
++#define TCG_TARGET_HAS_extract2_i64     0
+>
+#define TCG_TARGET_HAS_movcond_i64      1
+>
+#define TCG_TARGET_HAS_add2_i64         1
+>
+#define TCG_TARGET_HAS_sub2_i64         1
+>
+>
+... the problem disappears.
+>
+It looks the problem is in this code segment in of tcg_gen_deposit_i32():
+
+        if (ofs == 0) {
+            tcg_gen_extract2_i32(ret, arg1, arg2, len);
+            tcg_gen_rotli_i32(ret, ret, len);
+            goto done;
+        }
+
+)
+
+If that code segment is deleted altogether (which effectively forces
+usage of "fallback" part of tcg_gen_deposit_i32()), the problem also
+vanishes (without changes from my previous mail).
+
+>
+>
+> Yours,
+>
+> Aleksandar
+
+Aleksandar Markovic <address@hidden> writes:
+
+>
+Hello, Richard, Peter, and others.
+>
+>
+As a part of activities before 4.1 release, I tested nanoMIPS support
+>
+in QEMU (which was officially fully integrated in 4.0, is currently
+>
+limited to system mode only, and was tested in a similar fashion right
+>
+prior to 4.0).
+>
+>
+This support appears to be broken now. Following command line works in
+>
+4.0, but results in kernel panic for the current tip of the tree:
+>
+>
+~/Build/qemu-test-revert-c6fb8c0cf704/mipsel-softmmu/qemu-system-mipsel
+>
+-cpu I7200 -kernel generic_nano32r6el_page4k -M malta -serial stdio -m
+>
+1G -hda nanomips32r6_le_sf_2017.05-03-59-gf5595d6.ext4 -append
+>
+"mem=256m@0x0 rw console=ttyS0 vga=cirrus vesa=0x111 root=/dev/sda"
+>
+>
+(kernel and rootfs image files used in this commend line can be
+>
+downloaded from the locations mentioned in our user guide)
+>
+>
+The quick bisect points to the commit:
+>
+>
+commit c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab
+>
+Author: Richard Henderson <address@hidden>
+>
+Date:   Mon Feb 25 11:42:35 2019 -0800
+>
+>
+tcg/i386: Support INDEX_op_extract2_{i32,i64}
+>
+>
+Signed-off-by: Richard Henderson <address@hidden>
+>
+>
+Please advise on further actions.
+Please see the fix:
+
+  Subject: [PATCH for-4.1] tcg: Fix constant folding of INDEX_op_extract2_i32
+  Date: Tue,  9 Jul 2019 14:19:00 +0200
+  Message-Id: <address@hidden>
+
+>
+>
+Yours,
+>
+Aleksandar
+--
+Alex Bennée
+
+On Sat, Jul 13, 2019 at 9:21 AM Alex Bennée <address@hidden> wrote:
+>
+>
+Please see the fix:
+>
+>
+Subject: [PATCH for-4.1] tcg: Fix constant folding of INDEX_op_extract2_i32
+>
+Date: Tue,  9 Jul 2019 14:19:00 +0200
+>
+Message-Id: <address@hidden>
+>
+Thanks, this fixed the behavior.
+
+Sincerely,
+Aleksandar
+
+>
+>
+>
+>
+> Yours,
+>
+> Aleksandar
+>
+>
+>
+--
+>
+Alex Bennée
+>
+
diff --git a/results/classifier/zero-shot/017/unknown/23270873 b/results/classifier/zero-shot/017/unknown/23270873
new file mode 100644
index 00000000..80634cdf
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/23270873
@@ -0,0 +1,751 @@
+user-level: 0.896
+mistranslation: 0.881
+risc-v: 0.859
+operating system: 0.844
+boot: 0.830
+TCG: 0.828
+ppc: 0.827
+vnc: 0.820
+peripherals: 0.820
+device: 0.810
+hypervisor: 0.806
+KVM: 0.803
+virtual: 0.802
+permissions: 0.802
+register: 0.797
+VMM: 0.792
+debug: 0.788
+assembly: 0.768
+network: 0.768
+graphic: 0.764
+arm: 0.761
+socket: 0.758
+semantic: 0.752
+performance: 0.744
+architecture: 0.742
+kernel: 0.735
+PID: 0.731
+x86: 0.730
+files: 0.730
+alpha: 0.712
+i386: 0.705
+--------------------
+debug: 0.890
+operating system: 0.576
+hypervisor: 0.219
+virtual: 0.203
+boot: 0.131
+kernel: 0.070
+files: 0.068
+TCG: 0.042
+performance: 0.031
+PID: 0.019
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+architecture: 0.005
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+
+[Qemu-devel] [BUG?] aio_get_linux_aio: Assertion `ctx->linux_aio' failed
+
+Hi,
+
+I am seeing some strange QEMU assertion failures for qemu on s390x,
+which prevents a guest from starting.
+
+Git bisecting points to the following commit as the source of the error.
+
+commit ed6e2161715c527330f936d44af4c547f25f687e
+Author: Nishanth Aravamudan <address@hidden>
+Date:   Fri Jun 22 12:37:00 2018 -0700
+
+    linux-aio: properly bubble up errors from initialization
+
+    laio_init() can fail for a couple of reasons, which will lead to a NULL
+    pointer dereference in laio_attach_aio_context().
+
+    To solve this, add a aio_setup_linux_aio() function which is called
+    early in raw_open_common. If this fails, propagate the error up. The
+    signature of aio_get_linux_aio() was not modified, because it seems
+    preferable to return the actual errno from the possible failing
+    initialization calls.
+
+    Additionally, when the AioContext changes, we need to associate a
+    LinuxAioState with the new AioContext. Use the bdrv_attach_aio_context
+    callback and call the new aio_setup_linux_aio(), which will allocate a
+new AioContext if needed, and return errors on failures. If it
+fails for
+any reason, fallback to threaded AIO with an error message, as the
+    device is already in-use by the guest.
+
+    Add an assert that aio_get_linux_aio() cannot return NULL.
+
+    Signed-off-by: Nishanth Aravamudan <address@hidden>
+    Message-id: address@hidden
+    Signed-off-by: Stefan Hajnoczi <address@hidden>
+Not sure what is causing this assertion to fail. Here is the qemu
+command line of the guest, from qemu log, which throws this error:
+LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
+QEMU_AUDIO_DRV=none /usr/local/bin/qemu-system-s390x -name
+guest=rt_vm1,debug-threads=on -S -object
+secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-21-rt_vm1/master-key.aes
+-machine s390-ccw-virtio-2.12,accel=kvm,usb=off,dump-guest-core=off -m
+1024 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -object
+iothread,id=iothread1 -uuid 0cde16cd-091d-41bd-9ac2-5243df5c9a0d
+-display none -no-user-config -nodefaults -chardev
+socket,id=charmonitor,fd=28,server,nowait -mon
+chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown
+-boot strict=on -drive
+file=/dev/mapper/360050763998b0883980000002a000031,format=raw,if=none,id=drive-virtio-disk0,cache=none,aio=native
+-device
+virtio-blk-ccw,iothread=iothread1,scsi=off,devno=fe.0.0001,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1,write-cache=on
+-netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=31 -device
+virtio-net-ccw,netdev=hostnet0,id=net0,mac=02:3a:c8:67:95:84,devno=fe.0.0000
+-netdev tap,fd=32,id=hostnet1,vhost=on,vhostfd=33 -device
+virtio-net-ccw,netdev=hostnet1,id=net1,mac=52:54:00:2a:e5:08,devno=fe.0.0002
+-chardev pty,id=charconsole0 -device
+sclpconsole,chardev=charconsole0,id=console0 -device
+virtio-balloon-ccw,id=balloon0,devno=fe.3.ffba -sandbox
+on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny
+-msg timestamp=on
+2018-07-17 15:48:42.252+0000: Domain id=21 is tainted: high-privileges
+2018-07-17T15:48:42.279380Z qemu-system-s390x: -chardev
+pty,id=charconsole0: char device redirected to /dev/pts/3 (label
+charconsole0)
+qemu-system-s390x: util/async.c:339: aio_get_linux_aio: Assertion
+`ctx->linux_aio' failed.
+2018-07-17 15:48:43.309+0000: shutting down, reason=failed
+
+
+Any help debugging this would be greatly appreciated.
+
+Thank you
+Farhan
+
+On 17.07.2018 [13:25:53 -0400], Farhan Ali wrote:
+>
+Hi,
+>
+>
+I am seeing some strange QEMU assertion failures for qemu on s390x,
+>
+which prevents a guest from starting.
+>
+>
+Git bisecting points to the following commit as the source of the error.
+>
+>
+commit ed6e2161715c527330f936d44af4c547f25f687e
+>
+Author: Nishanth Aravamudan <address@hidden>
+>
+Date:   Fri Jun 22 12:37:00 2018 -0700
+>
+>
+linux-aio: properly bubble up errors from initialization
+>
+>
+laio_init() can fail for a couple of reasons, which will lead to a NULL
+>
+pointer dereference in laio_attach_aio_context().
+>
+>
+To solve this, add a aio_setup_linux_aio() function which is called
+>
+early in raw_open_common. If this fails, propagate the error up. The
+>
+signature of aio_get_linux_aio() was not modified, because it seems
+>
+preferable to return the actual errno from the possible failing
+>
+initialization calls.
+>
+>
+Additionally, when the AioContext changes, we need to associate a
+>
+LinuxAioState with the new AioContext. Use the bdrv_attach_aio_context
+>
+callback and call the new aio_setup_linux_aio(), which will allocate a
+>
+new AioContext if needed, and return errors on failures. If it fails for
+>
+any reason, fallback to threaded AIO with an error message, as the
+>
+device is already in-use by the guest.
+>
+>
+Add an assert that aio_get_linux_aio() cannot return NULL.
+>
+>
+Signed-off-by: Nishanth Aravamudan <address@hidden>
+>
+Message-id: address@hidden
+>
+Signed-off-by: Stefan Hajnoczi <address@hidden>
+>
+>
+>
+Not sure what is causing this assertion to fail. Here is the qemu command
+>
+line of the guest, from qemu log, which throws this error:
+>
+>
+>
+LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
+>
+QEMU_AUDIO_DRV=none /usr/local/bin/qemu-system-s390x -name
+>
+guest=rt_vm1,debug-threads=on -S -object
+>
+secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-21-rt_vm1/master-key.aes
+>
+-machine s390-ccw-virtio-2.12,accel=kvm,usb=off,dump-guest-core=off -m 1024
+>
+-realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -object
+>
+iothread,id=iothread1 -uuid 0cde16cd-091d-41bd-9ac2-5243df5c9a0d -display
+>
+none -no-user-config -nodefaults -chardev
+>
+socket,id=charmonitor,fd=28,server,nowait -mon
+>
+chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot
+>
+strict=on -drive
+>
+file=/dev/mapper/360050763998b0883980000002a000031,format=raw,if=none,id=drive-virtio-disk0,cache=none,aio=native
+>
+-device
+>
+virtio-blk-ccw,iothread=iothread1,scsi=off,devno=fe.0.0001,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1,write-cache=on
+>
+-netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=31 -device
+>
+virtio-net-ccw,netdev=hostnet0,id=net0,mac=02:3a:c8:67:95:84,devno=fe.0.0000
+>
+-netdev tap,fd=32,id=hostnet1,vhost=on,vhostfd=33 -device
+>
+virtio-net-ccw,netdev=hostnet1,id=net1,mac=52:54:00:2a:e5:08,devno=fe.0.0002
+>
+-chardev pty,id=charconsole0 -device
+>
+sclpconsole,chardev=charconsole0,id=console0 -device
+>
+virtio-balloon-ccw,id=balloon0,devno=fe.3.ffba -sandbox
+>
+on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg
+>
+timestamp=on
+>
+>
+>
+>
+2018-07-17 15:48:42.252+0000: Domain id=21 is tainted: high-privileges
+>
+2018-07-17T15:48:42.279380Z qemu-system-s390x: -chardev pty,id=charconsole0:
+>
+char device redirected to /dev/pts/3 (label charconsole0)
+>
+qemu-system-s390x: util/async.c:339: aio_get_linux_aio: Assertion
+>
+`ctx->linux_aio' failed.
+>
+2018-07-17 15:48:43.309+0000: shutting down, reason=failed
+>
+>
+>
+Any help debugging this would be greatly appreciated.
+iiuc, this possibly implies AIO was not actually used previously on this
+guest (it might have silently been falling back to threaded IO?). I
+don't have access to s390x, but would it be possible to run qemu under
+gdb and see if aio_setup_linux_aio is being called at all (I think it
+might not be, but I'm not sure why), and if so, if it's for the context
+in question?
+
+If it's not being called first, could you see what callpath is calling
+aio_get_linux_aio when this assertion trips?
+
+Thanks!
+-Nish
+
+On 07/17/2018 04:52 PM, Nishanth Aravamudan wrote:
+iiuc, this possibly implies AIO was not actually used previously on this
+guest (it might have silently been falling back to threaded IO?). I
+don't have access to s390x, but would it be possible to run qemu under
+gdb and see if aio_setup_linux_aio is being called at all (I think it
+might not be, but I'm not sure why), and if so, if it's for the context
+in question?
+
+If it's not being called first, could you see what callpath is calling
+aio_get_linux_aio when this assertion trips?
+
+Thanks!
+-Nish
+Hi Nishant,
+From the coredump of the guest this is the call trace that calls
+aio_get_linux_aio:
+Stack trace of thread 145158:
+#0  0x000003ff94dbe274 raise (libc.so.6)
+#1  0x000003ff94da39a8 abort (libc.so.6)
+#2  0x000003ff94db62ce __assert_fail_base (libc.so.6)
+#3  0x000003ff94db634c __assert_fail (libc.so.6)
+#4  0x000002aa20db067a aio_get_linux_aio (qemu-system-s390x)
+#5  0x000002aa20d229a8 raw_aio_plug (qemu-system-s390x)
+#6  0x000002aa20d309ee bdrv_io_plug (qemu-system-s390x)
+#7  0x000002aa20b5a8ea virtio_blk_handle_vq (qemu-system-s390x)
+#8  0x000002aa20db2f6e aio_dispatch_handlers (qemu-system-s390x)
+#9  0x000002aa20db3c34 aio_poll (qemu-system-s390x)
+#10 0x000002aa20be32a2 iothread_run (qemu-system-s390x)
+#11 0x000003ff94f879a8 start_thread (libpthread.so.0)
+#12 0x000003ff94e797ee thread_start (libc.so.6)
+
+
+Thanks for taking a look and responding.
+
+Thanks
+Farhan
+
+On 07/18/2018 09:42 AM, Farhan Ali wrote:
+On 07/17/2018 04:52 PM, Nishanth Aravamudan wrote:
+iiuc, this possibly implies AIO was not actually used previously on this
+guest (it might have silently been falling back to threaded IO?). I
+don't have access to s390x, but would it be possible to run qemu under
+gdb and see if aio_setup_linux_aio is being called at all (I think it
+might not be, but I'm not sure why), and if so, if it's for the context
+in question?
+
+If it's not being called first, could you see what callpath is calling
+aio_get_linux_aio when this assertion trips?
+
+Thanks!
+-Nish
+Hi Nishant,
+From the coredump of the guest this is the call trace that calls
+aio_get_linux_aio:
+Stack trace of thread 145158:
+#0  0x000003ff94dbe274 raise (libc.so.6)
+#1  0x000003ff94da39a8 abort (libc.so.6)
+#2  0x000003ff94db62ce __assert_fail_base (libc.so.6)
+#3  0x000003ff94db634c __assert_fail (libc.so.6)
+#4  0x000002aa20db067a aio_get_linux_aio (qemu-system-s390x)
+#5  0x000002aa20d229a8 raw_aio_plug (qemu-system-s390x)
+#6  0x000002aa20d309ee bdrv_io_plug (qemu-system-s390x)
+#7  0x000002aa20b5a8ea virtio_blk_handle_vq (qemu-system-s390x)
+#8  0x000002aa20db2f6e aio_dispatch_handlers (qemu-system-s390x)
+#9  0x000002aa20db3c34 aio_poll (qemu-system-s390x)
+#10 0x000002aa20be32a2 iothread_run (qemu-system-s390x)
+#11 0x000003ff94f879a8 start_thread (libpthread.so.0)
+#12 0x000003ff94e797ee thread_start (libc.so.6)
+
+
+Thanks for taking a look and responding.
+
+Thanks
+Farhan
+Trying to debug a little further, the block device in this case is a
+"host device". And looking at your commit carefully you use the
+bdrv_attach_aio_context callback to setup a Linux AioContext.
+For some reason the "host device" struct (BlockDriver bdrv_host_device
+in block/file-posix.c) does not have a bdrv_attach_aio_context defined.
+So a simple change of adding the callback to the struct solves the issue
+and the guest starts fine.
+diff --git a/block/file-posix.c b/block/file-posix.c
+index 28824aa..b8d59fb 100644
+--- a/block/file-posix.c
++++ b/block/file-posix.c
+@@ -3135,6 +3135,7 @@ static BlockDriver bdrv_host_device = {
+     .bdrv_refresh_limits = raw_refresh_limits,
+     .bdrv_io_plug = raw_aio_plug,
+     .bdrv_io_unplug = raw_aio_unplug,
++    .bdrv_attach_aio_context = raw_aio_attach_aio_context,
+
+     .bdrv_co_truncate       = raw_co_truncate,
+     .bdrv_getlength    = raw_getlength,
+I am not too familiar with block device code in QEMU, so not sure if
+this is the right fix or if there are some underlying problems.
+Thanks
+Farhan
+
+On 18.07.2018 [11:10:27 -0400], Farhan Ali wrote:
+>
+>
+>
+On 07/18/2018 09:42 AM, Farhan Ali wrote:
+>
+>
+>
+>
+>
+> On 07/17/2018 04:52 PM, Nishanth Aravamudan wrote:
+>
+> > iiuc, this possibly implies AIO was not actually used previously on this
+>
+> > guest (it might have silently been falling back to threaded IO?). I
+>
+> > don't have access to s390x, but would it be possible to run qemu under
+>
+> > gdb and see if aio_setup_linux_aio is being called at all (I think it
+>
+> > might not be, but I'm not sure why), and if so, if it's for the context
+>
+> > in question?
+>
+> >
+>
+> > If it's not being called first, could you see what callpath is calling
+>
+> > aio_get_linux_aio when this assertion trips?
+>
+> >
+>
+> > Thanks!
+>
+> > -Nish
+>
+>
+>
+>
+>
+> Hi Nishant,
+>
+>
+>
+>  From the coredump of the guest this is the call trace that calls
+>
+> aio_get_linux_aio:
+>
+>
+>
+>
+>
+> Stack trace of thread 145158:
+>
+> #0  0x000003ff94dbe274 raise (libc.so.6)
+>
+> #1  0x000003ff94da39a8 abort (libc.so.6)
+>
+> #2  0x000003ff94db62ce __assert_fail_base (libc.so.6)
+>
+> #3  0x000003ff94db634c __assert_fail (libc.so.6)
+>
+> #4  0x000002aa20db067a aio_get_linux_aio (qemu-system-s390x)
+>
+> #5  0x000002aa20d229a8 raw_aio_plug (qemu-system-s390x)
+>
+> #6  0x000002aa20d309ee bdrv_io_plug (qemu-system-s390x)
+>
+> #7  0x000002aa20b5a8ea virtio_blk_handle_vq (qemu-system-s390x)
+>
+> #8  0x000002aa20db2f6e aio_dispatch_handlers (qemu-system-s390x)
+>
+> #9  0x000002aa20db3c34 aio_poll (qemu-system-s390x)
+>
+> #10 0x000002aa20be32a2 iothread_run (qemu-system-s390x)
+>
+> #11 0x000003ff94f879a8 start_thread (libpthread.so.0)
+>
+> #12 0x000003ff94e797ee thread_start (libc.so.6)
+>
+>
+>
+>
+>
+> Thanks for taking a look and responding.
+>
+>
+>
+> Thanks
+>
+> Farhan
+>
+>
+>
+>
+>
+>
+>
+>
+Trying to debug a little further, the block device in this case is a "host
+>
+device". And looking at your commit carefully you use the
+>
+bdrv_attach_aio_context callback to setup a Linux AioContext.
+>
+>
+For some reason the "host device" struct (BlockDriver bdrv_host_device in
+>
+block/file-posix.c) does not have a bdrv_attach_aio_context defined.
+>
+So a simple change of adding the callback to the struct solves the issue and
+>
+the guest starts fine.
+>
+>
+>
+diff --git a/block/file-posix.c b/block/file-posix.c
+>
+index 28824aa..b8d59fb 100644
+>
+--- a/block/file-posix.c
+>
++++ b/block/file-posix.c
+>
+@@ -3135,6 +3135,7 @@ static BlockDriver bdrv_host_device = {
+>
+.bdrv_refresh_limits = raw_refresh_limits,
+>
+.bdrv_io_plug = raw_aio_plug,
+>
+.bdrv_io_unplug = raw_aio_unplug,
+>
++    .bdrv_attach_aio_context = raw_aio_attach_aio_context,
+>
+>
+.bdrv_co_truncate       = raw_co_truncate,
+>
+.bdrv_getlength    = raw_getlength,
+>
+>
+>
+>
+I am not too familiar with block device code in QEMU, so not sure if
+>
+this is the right fix or if there are some underlying problems.
+Oh this is quite embarassing! I only added the bdrv_attach_aio_context
+callback for the file-backed device. Your fix is definitely corect for
+host device. Let me make sure there weren't any others missed and I will
+send out a properly formatted patch. Thank you for the quick testing and
+turnaround!
+
+-Nish
+
+On 07/18/2018 08:52 PM, Nishanth Aravamudan wrote:
+>
+On 18.07.2018 [11:10:27 -0400], Farhan Ali wrote:
+>
+>
+>
+>
+>
+> On 07/18/2018 09:42 AM, Farhan Ali wrote:
+>
+>>
+>
+>>
+>
+>> On 07/17/2018 04:52 PM, Nishanth Aravamudan wrote:
+>
+>>> iiuc, this possibly implies AIO was not actually used previously on this
+>
+>>> guest (it might have silently been falling back to threaded IO?). I
+>
+>>> don't have access to s390x, but would it be possible to run qemu under
+>
+>>> gdb and see if aio_setup_linux_aio is being called at all (I think it
+>
+>>> might not be, but I'm not sure why), and if so, if it's for the context
+>
+>>> in question?
+>
+>>>
+>
+>>> If it's not being called first, could you see what callpath is calling
+>
+>>> aio_get_linux_aio when this assertion trips?
+>
+>>>
+>
+>>> Thanks!
+>
+>>> -Nish
+>
+>>
+>
+>>
+>
+>> Hi Nishant,
+>
+>>
+>
+>>  From the coredump of the guest this is the call trace that calls
+>
+>> aio_get_linux_aio:
+>
+>>
+>
+>>
+>
+>> Stack trace of thread 145158:
+>
+>> #0  0x000003ff94dbe274 raise (libc.so.6)
+>
+>> #1  0x000003ff94da39a8 abort (libc.so.6)
+>
+>> #2  0x000003ff94db62ce __assert_fail_base (libc.so.6)
+>
+>> #3  0x000003ff94db634c __assert_fail (libc.so.6)
+>
+>> #4  0x000002aa20db067a aio_get_linux_aio (qemu-system-s390x)
+>
+>> #5  0x000002aa20d229a8 raw_aio_plug (qemu-system-s390x)
+>
+>> #6  0x000002aa20d309ee bdrv_io_plug (qemu-system-s390x)
+>
+>> #7  0x000002aa20b5a8ea virtio_blk_handle_vq (qemu-system-s390x)
+>
+>> #8  0x000002aa20db2f6e aio_dispatch_handlers (qemu-system-s390x)
+>
+>> #9  0x000002aa20db3c34 aio_poll (qemu-system-s390x)
+>
+>> #10 0x000002aa20be32a2 iothread_run (qemu-system-s390x)
+>
+>> #11 0x000003ff94f879a8 start_thread (libpthread.so.0)
+>
+>> #12 0x000003ff94e797ee thread_start (libc.so.6)
+>
+>>
+>
+>>
+>
+>> Thanks for taking a look and responding.
+>
+>>
+>
+>> Thanks
+>
+>> Farhan
+>
+>>
+>
+>>
+>
+>>
+>
+>
+>
+> Trying to debug a little further, the block device in this case is a "host
+>
+> device". And looking at your commit carefully you use the
+>
+> bdrv_attach_aio_context callback to setup a Linux AioContext.
+>
+>
+>
+> For some reason the "host device" struct (BlockDriver bdrv_host_device in
+>
+> block/file-posix.c) does not have a bdrv_attach_aio_context defined.
+>
+> So a simple change of adding the callback to the struct solves the issue and
+>
+> the guest starts fine.
+>
+>
+>
+>
+>
+> diff --git a/block/file-posix.c b/block/file-posix.c
+>
+> index 28824aa..b8d59fb 100644
+>
+> --- a/block/file-posix.c
+>
+> +++ b/block/file-posix.c
+>
+> @@ -3135,6 +3135,7 @@ static BlockDriver bdrv_host_device = {
+>
+>      .bdrv_refresh_limits = raw_refresh_limits,
+>
+>      .bdrv_io_plug = raw_aio_plug,
+>
+>      .bdrv_io_unplug = raw_aio_unplug,
+>
+> +    .bdrv_attach_aio_context = raw_aio_attach_aio_context,
+>
+>
+>
+>      .bdrv_co_truncate       = raw_co_truncate,
+>
+>      .bdrv_getlength    = raw_getlength,
+>
+>
+>
+>
+>
+>
+>
+> I am not too familiar with block device code in QEMU, so not sure if
+>
+> this is the right fix or if there are some underlying problems.
+>
+>
+Oh this is quite embarassing! I only added the bdrv_attach_aio_context
+>
+callback for the file-backed device. Your fix is definitely corect for
+>
+host device. Let me make sure there weren't any others missed and I will
+>
+send out a properly formatted patch. Thank you for the quick testing and
+>
+turnaround!
+Farhan, can you respin your patch with proper sign-off and patch description?
+Adding qemu-block.
+
+Hi Christian,
+
+On 19.07.2018 [08:55:20 +0200], Christian Borntraeger wrote:
+>
+>
+>
+On 07/18/2018 08:52 PM, Nishanth Aravamudan wrote:
+>
+> On 18.07.2018 [11:10:27 -0400], Farhan Ali wrote:
+>
+>>
+>
+>>
+>
+>> On 07/18/2018 09:42 AM, Farhan Ali wrote:
+<snip>
+
+>
+>> I am not too familiar with block device code in QEMU, so not sure if
+>
+>> this is the right fix or if there are some underlying problems.
+>
+>
+>
+> Oh this is quite embarassing! I only added the bdrv_attach_aio_context
+>
+> callback for the file-backed device. Your fix is definitely corect for
+>
+> host device. Let me make sure there weren't any others missed and I will
+>
+> send out a properly formatted patch. Thank you for the quick testing and
+>
+> turnaround!
+>
+>
+Farhan, can you respin your patch with proper sign-off and patch description?
+>
+Adding qemu-block.
+I sent it yesterday, sorry I didn't cc everyone from this e-mail:
+http://lists.nongnu.org/archive/html/qemu-block/2018-07/msg00516.html
+Thanks,
+Nish
+
diff --git a/results/classifier/zero-shot/017/unknown/25842545 b/results/classifier/zero-shot/017/unknown/25842545
new file mode 100644
index 00000000..bceba0ed
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/25842545
@@ -0,0 +1,261 @@
+user-level: 0.958
+risc-v: 0.929
+mistranslation: 0.928
+register: 0.879
+VMM: 0.871
+KVM: 0.867
+ppc: 0.866
+vnc: 0.862
+TCG: 0.857
+device: 0.847
+virtual: 0.843
+hypervisor: 0.841
+debug: 0.836
+performance: 0.831
+semantic: 0.829
+PID: 0.829
+peripherals: 0.829
+boot: 0.824
+assembly: 0.824
+graphic: 0.822
+x86: 0.821
+i386: 0.819
+arm: 0.818
+permissions: 0.817
+alpha: 0.809
+socket: 0.808
+kernel: 0.808
+files: 0.806
+architecture: 0.804
+operating system: 0.798
+network: 0.796
+--------------------
+KVM: 0.983
+debug: 0.931
+hypervisor: 0.924
+virtual: 0.913
+socket: 0.682
+x86: 0.566
+register: 0.248
+TCG: 0.136
+operating system: 0.125
+kernel: 0.073
+PID: 0.068
+device: 0.047
+files: 0.047
+performance: 0.045
+assembly: 0.018
+i386: 0.012
+network: 0.012
+semantic: 0.011
+VMM: 0.009
+peripherals: 0.008
+user-level: 0.008
+boot: 0.008
+architecture: 0.007
+risc-v: 0.006
+ppc: 0.006
+permissions: 0.004
+alpha: 0.004
+graphic: 0.003
+vnc: 0.003
+arm: 0.001
+mistranslation: 0.001
+
+[Qemu-devel] [Bug?] Guest pause because VMPTRLD failed in KVM
+
+Hello,
+
+  We encountered a problem that a guest paused because the KMOD report VMPTRLD 
+failed.
+
+The related information is as follows:
+
+1) Qemu command:
+   /usr/bin/qemu-kvm -name omu1 -S -machine pc-i440fx-2.3,accel=kvm,usb=off -cpu
+host -m 15625 -realtime mlock=off -smp 8,sockets=1,cores=8,threads=1 -uuid
+a2aacfff-6583-48b4-b6a4-e6830e519931 -no-user-config -nodefaults -chardev
+socket,id=charmonitor,path=/var/lib/libvirt/qemu/omu1.monitor,server,nowait
+-mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown
+-boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
+virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive
+file=/home/env/guest1.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native
+  -device
+virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0
+  -drive
+file=/home/env/guest_300G.img,if=none,id=drive-virtio-disk1,format=raw,cache=none,aio=native
+  -device
+virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk1,id=virtio-disk1
+  -netdev tap,fd=25,id=hostnet0,vhost=on,vhostfd=26 -device
+virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:80:05:00:00,bus=pci.0,addr=0x3
+-netdev tap,fd=27,id=hostnet1,vhost=on,vhostfd=28 -device
+virtio-net-pci,netdev=hostnet1,id=net1,mac=00:00:80:05:00:01,bus=pci.0,addr=0x4
+-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
+-device usb-tablet,id=input0 -vnc 0.0.0.0:0 -device
+cirrus-vga,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device
+virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 -msg timestamp=on
+
+   2) Qemu log:
+   KVM: entry failed, hardware error 0x4
+   RAX=00000000ffffffed RBX=ffff8803fa2d7fd8 RCX=0100000000000000
+RDX=0000000000000000
+   RSI=0000000000000000 RDI=0000000000000046 RBP=ffff8803fa2d7e90
+RSP=ffff8803fa2efe90
+   R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000
+R11=000000000000b69a
+   R12=0000000000000001 R13=ffffffff81a25b40 R14=0000000000000000
+R15=ffff8803fa2d7fd8
+   RIP=ffffffff81053e16 RFL=00000286 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
+   ES =0000 0000000000000000 ffffffff 00c00000
+   CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
+   SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
+   DS =0000 0000000000000000 ffffffff 00c00000
+   FS =0000 0000000000000000 ffffffff 00c00000
+   GS =0000 ffff88040f540000 ffffffff 00c00000
+   LDT=0000 0000000000000000 ffffffff 00c00000
+   TR =0040 ffff88040f550a40 00002087 00008b00 DPL=0 TSS64-busy
+   GDT=     ffff88040f549000 0000007f
+   IDT=     ffffffffff529000 00000fff
+   CR0=80050033 CR2=00007f81ca0c5000 CR3=00000003f5081000 CR4=000407e0
+   DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
+DR3=0000000000000000
+   DR6=00000000ffff0ff0 DR7=0000000000000400
+   EFER=0000000000000d01
+   Code=?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? <??> ?? ??
+?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??
+
+   3) Demsg
+   [347315.028339] kvm: vmptrld ffff8817ec5f0000/17ec5f0000 failed
+   klogd 1.4.1, ---------- state change ----------
+   [347315.039506] kvm: vmptrld ffff8817ec5f0000/17ec5f0000 failed
+   [347315.051728] kvm: vmptrld ffff8817ec5f0000/17ec5f0000 failed
+   [347315.057472] vmwrite error: reg 6c0a value ffff88307e66e480 (err
+2120672384)
+   [347315.064567] Pid: 69523, comm: qemu-kvm Tainted: GF           X
+3.0.93-0.8-default #1
+   [347315.064569] Call Trace:
+   [347315.064587]  [<ffffffff810049d5>] dump_trace+0x75/0x300
+   [347315.064595]  [<ffffffff8145e3e3>] dump_stack+0x69/0x6f
+   [347315.064617]  [<ffffffffa03738de>] vmx_vcpu_load+0x11e/0x1d0 [kvm_intel]
+   [347315.064647]  [<ffffffffa029a204>] kvm_arch_vcpu_load+0x44/0x1d0 [kvm]
+   [347315.064669]  [<ffffffff81054ee1>] finish_task_switch+0x81/0xe0
+   [347315.064676]  [<ffffffff8145f0b4>] thread_return+0x3b/0x2a7
+   [347315.064687]  [<ffffffffa028d9b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+   [347315.064703]  [<ffffffffa02a16d1>] __vcpu_run+0xd1/0x260 [kvm]
+   [347315.064732]  [<ffffffffa02a2418>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 
+[kvm]
+   [347315.064759]  [<ffffffffa028ecee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+   [347315.064771]  [<ffffffff8116bdfb>] do_vfs_ioctl+0x8b/0x3b0
+   [347315.064776]  [<ffffffff8116c1c1>] sys_ioctl+0xa1/0xb0
+   [347315.064783]  [<ffffffff81469272>] system_call_fastpath+0x16/0x1b
+   [347315.064797]  [<00007fee51969ce7>] 0x7fee51969ce6
+   [347315.064799] vmwrite error: reg 6c0c value ffff88307e664000 (err
+2120630272)
+   [347315.064802] Pid: 69523, comm: qemu-kvm Tainted: GF           X
+3.0.93-0.8-default #1
+   [347315.064803] Call Trace:
+   [347315.064807]  [<ffffffff810049d5>] dump_trace+0x75/0x300
+   [347315.064811]  [<ffffffff8145e3e3>] dump_stack+0x69/0x6f
+   [347315.064817]  [<ffffffffa03738ec>] vmx_vcpu_load+0x12c/0x1d0 [kvm_intel]
+   [347315.064832]  [<ffffffffa029a204>] kvm_arch_vcpu_load+0x44/0x1d0 [kvm]
+   [347315.064851]  [<ffffffff81054ee1>] finish_task_switch+0x81/0xe0
+   [347315.064855]  [<ffffffff8145f0b4>] thread_return+0x3b/0x2a7
+   [347315.064865]  [<ffffffffa028d9b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+   [347315.064880]  [<ffffffffa02a16d1>] __vcpu_run+0xd1/0x260 [kvm]
+   [347315.064907]  [<ffffffffa02a2418>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 
+[kvm]
+   [347315.064933]  [<ffffffffa028ecee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+   [347315.064943]  [<ffffffff8116bdfb>] do_vfs_ioctl+0x8b/0x3b0
+   [347315.064947]  [<ffffffff8116c1c1>] sys_ioctl+0xa1/0xb0
+   [347315.064951]  [<ffffffff81469272>] system_call_fastpath+0x16/0x1b
+   [347315.064957]  [<00007fee51969ce7>] 0x7fee51969ce6
+   [347315.064959] vmwrite error: reg 6c10 value 0 (err 0)
+
+   4) The isssue can't be reporduced. I search the Intel VMX sepc about reaseons
+of vmptrld failure:
+   The instruction fails if its operand is not properly aligned, sets
+unsupported physical-address bits, or is equal to the VMXON
+   pointer. In addition, the instruction fails if the 32 bits in memory
+referenced by the operand do not match the VMCS
+   revision identifier supported by this processor.
+
+   But I can't find any cues from the KVM source code. It seems each
+   error conditions is impossible in theory. :(
+
+Any suggestions will be appreciated! Paolo?
+
+-- 
+Regards,
+-Gonglei
+
+On 10/11/2016 15:10, gong lei wrote:
+>
+4) The isssue can't be reporduced. I search the Intel VMX sepc about
+>
+reaseons
+>
+of vmptrld failure:
+>
+The instruction fails if its operand is not properly aligned, sets
+>
+unsupported physical-address bits, or is equal to the VMXON
+>
+pointer. In addition, the instruction fails if the 32 bits in memory
+>
+referenced by the operand do not match the VMCS
+>
+revision identifier supported by this processor.
+>
+>
+But I can't find any cues from the KVM source code. It seems each
+>
+error conditions is impossible in theory. :(
+Yes, it should not happen. :(
+
+If it's not reproducible, it's really hard to say what it was, except a
+random memory corruption elsewhere or even a bit flip (!).
+
+Paolo
+
+On 2016/11/17 20:39, Paolo Bonzini wrote:
+>
+>
+On 10/11/2016 15:10, gong lei wrote:
+>
+>     4) The isssue can't be reporduced. I search the Intel VMX sepc about
+>
+> reaseons
+>
+> of vmptrld failure:
+>
+>     The instruction fails if its operand is not properly aligned, sets
+>
+> unsupported physical-address bits, or is equal to the VMXON
+>
+>     pointer. In addition, the instruction fails if the 32 bits in memory
+>
+> referenced by the operand do not match the VMCS
+>
+>     revision identifier supported by this processor.
+>
+>
+>
+>     But I can't find any cues from the KVM source code. It seems each
+>
+>     error conditions is impossible in theory. :(
+>
+Yes, it should not happen. :(
+>
+>
+If it's not reproducible, it's really hard to say what it was, except a
+>
+random memory corruption elsewhere or even a bit flip (!).
+>
+>
+Paolo
+Thanks for your reply, Paolo :)
+
+-- 
+Regards,
+-Gonglei
+
diff --git a/results/classifier/zero-shot/017/unknown/25892827 b/results/classifier/zero-shot/017/unknown/25892827
new file mode 100644
index 00000000..52545cdf
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/25892827
@@ -0,0 +1,1136 @@
+risc-v: 0.908
+user-level: 0.889
+permissions: 0.881
+register: 0.876
+KVM: 0.872
+hypervisor: 0.871
+operating system: 0.871
+debug: 0.868
+x86: 0.849
+vnc: 0.846
+mistranslation: 0.842
+boot: 0.839
+network: 0.839
+VMM: 0.839
+device: 0.839
+TCG: 0.837
+virtual: 0.835
+i386: 0.835
+peripherals: 0.833
+graphic: 0.832
+assembly: 0.829
+architecture: 0.825
+semantic: 0.825
+ppc: 0.824
+socket: 0.822
+arm: 0.821
+performance: 0.819
+alpha: 0.816
+kernel: 0.810
+files: 0.804
+PID: 0.792
+--------------------
+virtual: 0.955
+KVM: 0.881
+x86: 0.715
+debug: 0.617
+hypervisor: 0.546
+PID: 0.132
+register: 0.102
+performance: 0.058
+files: 0.056
+operating system: 0.051
+kernel: 0.049
+boot: 0.025
+assembly: 0.017
+device: 0.014
+socket: 0.013
+semantic: 0.009
+user-level: 0.008
+TCG: 0.008
+risc-v: 0.007
+architecture: 0.006
+ppc: 0.005
+VMM: 0.005
+permissions: 0.004
+vnc: 0.004
+network: 0.004
+peripherals: 0.003
+arm: 0.003
+i386: 0.003
+alpha: 0.002
+graphic: 0.002
+mistranslation: 0.000
+
+[Qemu-devel] [BUG/RFC] Two cpus are not brought up normally in SLES11 sp3 VM after reboot
+
+Hi,
+
+Recently we encountered a problem in our project: 2 CPUs in VM are not brought 
+up normally after reboot.
+
+Our host is using KVM kmod 3.6 and QEMU 2.1.
+A SLES 11 sp3 VM configured with 8 vcpus,
+cpu model is configured with 'host-passthrough'.
+
+After VM's first time started up, everything seems to be OK.
+and then VM is paniced and rebooted.
+After reboot, only 6 cpus are brought up in VM, cpu1 and cpu7 are not online.
+
+This is the only message we can get from VM:
+VM dmesg shows:
+[    0.069867] Booting Node   0, Processors  #1
+[    5.060042] CPU1: Stuck ??
+[    5.060499]  #2
+[    5.088322] kvm-clock: cpu 2, msr 6:3fc90901, secondary cpu clock
+[    5.088335] KVM setup async PF for cpu 2
+[    5.092967] NMI watchdog enabled, takes one hw-pmu counter.
+[    5.094405]  #3
+[    5.108324] kvm-clock: cpu 3, msr 6:3fcd0901, secondary cpu clock
+[    5.108333] KVM setup async PF for cpu 3
+[    5.113553] NMI watchdog enabled, takes one hw-pmu counter.
+[    5.114970]  #4
+[    5.128325] kvm-clock: cpu 4, msr 6:3fd10901, secondary cpu clock
+[    5.128336] KVM setup async PF for cpu 4
+[    5.134576] NMI watchdog enabled, takes one hw-pmu counter.
+[    5.135998]  #5
+[    5.152324] kvm-clock: cpu 5, msr 6:3fd50901, secondary cpu clock
+[    5.152334] KVM setup async PF for cpu 5
+[    5.154764] NMI watchdog enabled, takes one hw-pmu counter.
+[    5.156467]  #6
+[    5.172327] kvm-clock: cpu 6, msr 6:3fd90901, secondary cpu clock
+[    5.172341] KVM setup async PF for cpu 6
+[    5.180738] NMI watchdog enabled, takes one hw-pmu counter.
+[    5.182173]  #7 Ok.
+[   10.170815] CPU7: Stuck ??
+[   10.171648] Brought up 6 CPUs
+[   10.172394] Total of 6 processors activated (28799.97 BogoMIPS).
+
+From host, we found that QEMU vcpu1 thread and vcpu7 thread were not consuming 
+any cpu (Should be in idle state),
+All of VCPUs' stacks in host is like bellow:
+
+[<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+[<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+[<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+[<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+[<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+[<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+[<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+[<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+[<ffffffffffffffff>] 0xffffffffffffffff
+
+We looked into the kernel codes that could leading to the above 'Stuck' warning,
+and found that the only possible is the emulation of 'cpuid' instruct in 
+kvm/qemu has something wrong.
+But since we can’t reproduce this problem, we are not quite sure.
+Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+
+Has anyone come across these problem before? Or any idea?
+
+Thanks,
+zhanghailiang
+
+On 06/07/2015 09:54, zhanghailiang wrote:
+>
+>
+From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+>
+consuming any cpu (Should be in idle state),
+>
+All of VCPUs' stacks in host is like bellow:
+>
+>
+[<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+>
+[<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+>
+[<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+>
+[<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+>
+[<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+>
+[<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+>
+[<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+>
+[<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+>
+[<ffffffffffffffff>] 0xffffffffffffffff
+>
+>
+We looked into the kernel codes that could leading to the above 'Stuck'
+>
+warning,
+>
+and found that the only possible is the emulation of 'cpuid' instruct in
+>
+kvm/qemu has something wrong.
+>
+But since we can’t reproduce this problem, we are not quite sure.
+>
+Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+Can you explain the relationship to the cpuid emulation?  What do the
+traces say about vcpus 1 and 7?
+
+Paolo
+
+On 2015/7/6 16:45, Paolo Bonzini wrote:
+On 06/07/2015 09:54, zhanghailiang wrote:
+From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+consuming any cpu (Should be in idle state),
+All of VCPUs' stacks in host is like bellow:
+
+[<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+[<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+[<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+[<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+[<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+[<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+[<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+[<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+[<ffffffffffffffff>] 0xffffffffffffffff
+
+We looked into the kernel codes that could leading to the above 'Stuck'
+warning,
+and found that the only possible is the emulation of 'cpuid' instruct in
+kvm/qemu has something wrong.
+But since we can’t reproduce this problem, we are not quite sure.
+Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+Can you explain the relationship to the cpuid emulation?  What do the
+traces say about vcpus 1 and 7?
+OK, we searched the VM's kernel codes with the 'Stuck' message, and  it is 
+located in
+do_boot_cpu(). It's in BSP context, the call process is:
+BSP executes start_kernel() -> smp_init() -> smp_boot_cpus() -> do_boot_cpu() 
+-> wakeup_secondary_via_INIT() to trigger APs.
+It will wait 5s for APs to startup, if some AP not startup normally, it will 
+print 'CPU%d Stuck' or 'CPU%d: Not responding'.
+
+If it prints 'Stuck', it means the AP has received the SIPI interrupt and 
+begins to execute the code
+'ENTRY(trampoline_data)' (trampoline_64.S) , but be stuck in some places before 
+smp_callin()(smpboot.c).
+The follow is the starup process of BSP and AP.
+BSP:
+start_kernel()
+  ->smp_init()
+     ->smp_boot_cpus()
+       ->do_boot_cpu()
+           ->start_ip = trampoline_address(); //set the address that AP will go 
+to execute
+           ->wakeup_secondary_cpu_via_init(); // kick the secondary CPU
+           ->for (timeout = 0; timeout < 50000; timeout++)
+               if (cpumask_test_cpu(cpu, cpu_callin_mask)) break;// check if AP 
+startup or not
+
+APs:
+ENTRY(trampoline_data) (trampoline_64.S)
+      ->ENTRY(secondary_startup_64) (head_64.S)
+         ->start_secondary() (smpboot.c)
+            ->cpu_init();
+            ->smp_callin();
+                ->cpumask_set_cpu(cpuid, cpu_callin_mask); ->Note: if AP comes 
+here, the BSP will not prints the error message.
+
+From above call process, we can be sure that, the AP has been stuck between 
+trampoline_data and the cpumask_set_cpu() in
+smp_callin(), we look through these codes path carefully, and only found a 
+'hlt' instruct that could block the process.
+It is located in trampoline_data():
+
+ENTRY(trampoline_data)
+        ...
+
+        call    verify_cpu              # Verify the cpu supports long mode
+        testl   %eax, %eax              # Check for return code
+        jnz     no_longmode
+
+        ...
+
+no_longmode:
+        hlt
+        jmp no_longmode
+
+For the process verify_cpu(),
+we can only find the 'cpuid' sensitive instruct that could lead VM exit from 
+No-root mode.
+This is why we doubt if cpuid emulation is wrong in KVM/QEMU that leading to 
+the fail in verify_cpu.
+
+From the message in VM, we know vcpu1 and vcpu7 is something wrong.
+[    5.060042] CPU1: Stuck ??
+[   10.170815] CPU7: Stuck ??
+[   10.171648] Brought up 6 CPUs
+
+Besides, the follow is the cpus message got from host.
+80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh qemu-monitor-command 
+instance-0000000
+* CPU #0: pc=0x00007f64160c683d thread_id=68570
+  CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+  CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+  CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+  CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+  CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+  CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+  CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+
+Oh, i also forgot to mention in the above message that, we have bond each vCPU 
+to different physical CPU in
+host.
+
+Thanks,
+zhanghailiang
+
+On 06/07/2015 11:59, zhanghailiang wrote:
+>
+>
+>
+Besides, the follow is the cpus message got from host.
+>
+80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh
+>
+qemu-monitor-command instance-0000000
+>
+* CPU #0: pc=0x00007f64160c683d thread_id=68570
+>
+CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+>
+CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+>
+CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+>
+CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+>
+CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+>
+CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+>
+CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+>
+>
+Oh, i also forgot to mention in the above message that, we have bond
+>
+each vCPU to different physical CPU in
+>
+host.
+Can you capture a trace on the host (trace-cmd record -e kvm) and send
+it privately?  Please note which CPUs get stuck, since I guess it's not
+always 1 and 7.
+
+Paolo
+
+On Mon, 6 Jul 2015 17:59:10 +0800
+zhanghailiang <address@hidden> wrote:
+
+>
+On 2015/7/6 16:45, Paolo Bonzini wrote:
+>
+>
+>
+>
+>
+> On 06/07/2015 09:54, zhanghailiang wrote:
+>
+>>
+>
+>>  From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+>
+>> consuming any cpu (Should be in idle state),
+>
+>> All of VCPUs' stacks in host is like bellow:
+>
+>>
+>
+>> [<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+>
+>> [<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+>
+>> [<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+>
+>> [<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+>
+>> [<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+>
+>> [<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+>
+>> [<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+>
+>> [<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+>
+>> [<ffffffffffffffff>] 0xffffffffffffffff
+>
+>>
+>
+>> We looked into the kernel codes that could leading to the above 'Stuck'
+>
+>> warning,
+in current upstream there isn't any printk(...Stuck...) left since that code 
+path
+has been reworked.
+I've often seen this on over-committed host during guest CPUs up/down torture 
+test.
+Could you update guest kernel to upstream and see if issue reproduces?
+
+>
+>> and found that the only possible is the emulation of 'cpuid' instruct in
+>
+>> kvm/qemu has something wrong.
+>
+>> But since we can’t reproduce this problem, we are not quite sure.
+>
+>> Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+>
+>
+>
+> Can you explain the relationship to the cpuid emulation?  What do the
+>
+> traces say about vcpus 1 and 7?
+>
+>
+OK, we searched the VM's kernel codes with the 'Stuck' message, and  it is
+>
+located in
+>
+do_boot_cpu(). It's in BSP context, the call process is:
+>
+BSP executes start_kernel() -> smp_init() -> smp_boot_cpus() -> do_boot_cpu()
+>
+-> wakeup_secondary_via_INIT() to trigger APs.
+>
+It will wait 5s for APs to startup, if some AP not startup normally, it will
+>
+print 'CPU%d Stuck' or 'CPU%d: Not responding'.
+>
+>
+If it prints 'Stuck', it means the AP has received the SIPI interrupt and
+>
+begins to execute the code
+>
+'ENTRY(trampoline_data)' (trampoline_64.S) , but be stuck in some places
+>
+before smp_callin()(smpboot.c).
+>
+The follow is the starup process of BSP and AP.
+>
+BSP:
+>
+start_kernel()
+>
+->smp_init()
+>
+->smp_boot_cpus()
+>
+->do_boot_cpu()
+>
+->start_ip = trampoline_address(); //set the address that AP will
+>
+go to execute
+>
+->wakeup_secondary_cpu_via_init(); // kick the secondary CPU
+>
+->for (timeout = 0; timeout < 50000; timeout++)
+>
+if (cpumask_test_cpu(cpu, cpu_callin_mask)) break;// check if
+>
+AP startup or not
+>
+>
+APs:
+>
+ENTRY(trampoline_data) (trampoline_64.S)
+>
+->ENTRY(secondary_startup_64) (head_64.S)
+>
+->start_secondary() (smpboot.c)
+>
+->cpu_init();
+>
+->smp_callin();
+>
+->cpumask_set_cpu(cpuid, cpu_callin_mask); ->Note: if AP
+>
+comes here, the BSP will not prints the error message.
+>
+>
+From above call process, we can be sure that, the AP has been stuck between
+>
+trampoline_data and the cpumask_set_cpu() in
+>
+smp_callin(), we look through these codes path carefully, and only found a
+>
+'hlt' instruct that could block the process.
+>
+It is located in trampoline_data():
+>
+>
+ENTRY(trampoline_data)
+>
+...
+>
+>
+call    verify_cpu              # Verify the cpu supports long mode
+>
+testl   %eax, %eax              # Check for return code
+>
+jnz     no_longmode
+>
+>
+...
+>
+>
+no_longmode:
+>
+hlt
+>
+jmp no_longmode
+>
+>
+For the process verify_cpu(),
+>
+we can only find the 'cpuid' sensitive instruct that could lead VM exit from
+>
+No-root mode.
+>
+This is why we doubt if cpuid emulation is wrong in KVM/QEMU that leading to
+>
+the fail in verify_cpu.
+>
+>
+From the message in VM, we know vcpu1 and vcpu7 is something wrong.
+>
+[    5.060042] CPU1: Stuck ??
+>
+[   10.170815] CPU7: Stuck ??
+>
+[   10.171648] Brought up 6 CPUs
+>
+>
+Besides, the follow is the cpus message got from host.
+>
+80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh
+>
+qemu-monitor-command instance-0000000
+>
+* CPU #0: pc=0x00007f64160c683d thread_id=68570
+>
+CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+>
+CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+>
+CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+>
+CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+>
+CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+>
+CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+>
+CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+>
+>
+Oh, i also forgot to mention in the above message that, we have bond each
+>
+vCPU to different physical CPU in
+>
+host.
+>
+>
+Thanks,
+>
+zhanghailiang
+>
+>
+>
+>
+>
+--
+>
+To unsubscribe from this list: send the line "unsubscribe kvm" in
+>
+the body of a message to address@hidden
+>
+More majordomo info at
+http://vger.kernel.org/majordomo-info.html
+
+On 2015/7/7 19:23, Igor Mammedov wrote:
+On Mon, 6 Jul 2015 17:59:10 +0800
+zhanghailiang <address@hidden> wrote:
+On 2015/7/6 16:45, Paolo Bonzini wrote:
+On 06/07/2015 09:54, zhanghailiang wrote:
+From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+consuming any cpu (Should be in idle state),
+All of VCPUs' stacks in host is like bellow:
+
+[<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+[<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+[<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+[<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+[<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+[<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+[<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+[<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+[<ffffffffffffffff>] 0xffffffffffffffff
+
+We looked into the kernel codes that could leading to the above 'Stuck'
+warning,
+in current upstream there isn't any printk(...Stuck...) left since that code 
+path
+has been reworked.
+I've often seen this on over-committed host during guest CPUs up/down torture 
+test.
+Could you update guest kernel to upstream and see if issue reproduces?
+Hmm, Unfortunately, it is very hard to reproduce, and we are still trying to 
+reproduce it.
+
+For your test case, is it a kernel bug?
+Or is there any related patch could solve your test problem been merged into
+upstream ?
+
+Thanks,
+zhanghailiang
+and found that the only possible is the emulation of 'cpuid' instruct in
+kvm/qemu has something wrong.
+But since we can’t reproduce this problem, we are not quite sure.
+Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+Can you explain the relationship to the cpuid emulation?  What do the
+traces say about vcpus 1 and 7?
+OK, we searched the VM's kernel codes with the 'Stuck' message, and  it is 
+located in
+do_boot_cpu(). It's in BSP context, the call process is:
+BSP executes start_kernel() -> smp_init() -> smp_boot_cpus() -> do_boot_cpu() 
+-> wakeup_secondary_via_INIT() to trigger APs.
+It will wait 5s for APs to startup, if some AP not startup normally, it will 
+print 'CPU%d Stuck' or 'CPU%d: Not responding'.
+
+If it prints 'Stuck', it means the AP has received the SIPI interrupt and 
+begins to execute the code
+'ENTRY(trampoline_data)' (trampoline_64.S) , but be stuck in some places before 
+smp_callin()(smpboot.c).
+The follow is the starup process of BSP and AP.
+BSP:
+start_kernel()
+    ->smp_init()
+       ->smp_boot_cpus()
+         ->do_boot_cpu()
+             ->start_ip = trampoline_address(); //set the address that AP will 
+go to execute
+             ->wakeup_secondary_cpu_via_init(); // kick the secondary CPU
+             ->for (timeout = 0; timeout < 50000; timeout++)
+                 if (cpumask_test_cpu(cpu, cpu_callin_mask)) break;// check if 
+AP startup or not
+
+APs:
+ENTRY(trampoline_data) (trampoline_64.S)
+        ->ENTRY(secondary_startup_64) (head_64.S)
+           ->start_secondary() (smpboot.c)
+              ->cpu_init();
+              ->smp_callin();
+                  ->cpumask_set_cpu(cpuid, cpu_callin_mask); ->Note: if AP 
+comes here, the BSP will not prints the error message.
+
+  From above call process, we can be sure that, the AP has been stuck between 
+trampoline_data and the cpumask_set_cpu() in
+smp_callin(), we look through these codes path carefully, and only found a 
+'hlt' instruct that could block the process.
+It is located in trampoline_data():
+
+ENTRY(trampoline_data)
+          ...
+
+        call    verify_cpu              # Verify the cpu supports long mode
+        testl   %eax, %eax              # Check for return code
+        jnz     no_longmode
+
+          ...
+
+no_longmode:
+        hlt
+        jmp no_longmode
+
+For the process verify_cpu(),
+we can only find the 'cpuid' sensitive instruct that could lead VM exit from 
+No-root mode.
+This is why we doubt if cpuid emulation is wrong in KVM/QEMU that leading to 
+the fail in verify_cpu.
+
+  From the message in VM, we know vcpu1 and vcpu7 is something wrong.
+[    5.060042] CPU1: Stuck ??
+[   10.170815] CPU7: Stuck ??
+[   10.171648] Brought up 6 CPUs
+
+Besides, the follow is the cpus message got from host.
+80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh qemu-monitor-command 
+instance-0000000
+* CPU #0: pc=0x00007f64160c683d thread_id=68570
+    CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+    CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+    CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+    CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+    CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+    CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+    CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+
+Oh, i also forgot to mention in the above message that, we have bond each vCPU 
+to different physical CPU in
+host.
+
+Thanks,
+zhanghailiang
+
+
+
+
+--
+To unsubscribe from this list: send the line "unsubscribe kvm" in
+the body of a message to address@hidden
+More majordomo info at
+http://vger.kernel.org/majordomo-info.html
+.
+
+On Tue, 7 Jul 2015 19:43:35 +0800
+zhanghailiang <address@hidden> wrote:
+
+>
+On 2015/7/7 19:23, Igor Mammedov wrote:
+>
+> On Mon, 6 Jul 2015 17:59:10 +0800
+>
+> zhanghailiang <address@hidden> wrote:
+>
+>
+>
+>> On 2015/7/6 16:45, Paolo Bonzini wrote:
+>
+>>>
+>
+>>>
+>
+>>> On 06/07/2015 09:54, zhanghailiang wrote:
+>
+>>>>
+>
+>>>>   From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+>
+>>>> consuming any cpu (Should be in idle state),
+>
+>>>> All of VCPUs' stacks in host is like bellow:
+>
+>>>>
+>
+>>>> [<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+>
+>>>> [<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+>
+>>>> [<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+>
+>>>> [<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+>
+>>>> [<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+>
+>>>> [<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+>
+>>>> [<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+>
+>>>> [<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+>
+>>>> [<ffffffffffffffff>] 0xffffffffffffffff
+>
+>>>>
+>
+>>>> We looked into the kernel codes that could leading to the above 'Stuck'
+>
+>>>> warning,
+>
+> in current upstream there isn't any printk(...Stuck...) left since that
+>
+> code path
+>
+> has been reworked.
+>
+> I've often seen this on over-committed host during guest CPUs up/down
+>
+> torture test.
+>
+> Could you update guest kernel to upstream and see if issue reproduces?
+>
+>
+>
+>
+Hmm, Unfortunately, it is very hard to reproduce, and we are still trying to
+>
+reproduce it.
+>
+>
+For your test case, is it a kernel bug?
+>
+Or is there any related patch could solve your test problem been merged into
+>
+upstream ?
+I don't remember all prerequisite patches but you should be able to find
+http://marc.info/?l=linux-kernel&m=140326703108009&w=2
+"x86/smpboot: Initialize secondary CPU only if master CPU will wait for it"
+and then look for dependencies.
+
+
+>
+>
+Thanks,
+>
+zhanghailiang
+>
+>
+>>>> and found that the only possible is the emulation of 'cpuid' instruct in
+>
+>>>> kvm/qemu has something wrong.
+>
+>>>> But since we can’t reproduce this problem, we are not quite sure.
+>
+>>>> Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+>
+>>>
+>
+>>> Can you explain the relationship to the cpuid emulation?  What do the
+>
+>>> traces say about vcpus 1 and 7?
+>
+>>
+>
+>> OK, we searched the VM's kernel codes with the 'Stuck' message, and  it is
+>
+>> located in
+>
+>> do_boot_cpu(). It's in BSP context, the call process is:
+>
+>> BSP executes start_kernel() -> smp_init() -> smp_boot_cpus() ->
+>
+>> do_boot_cpu() -> wakeup_secondary_via_INIT() to trigger APs.
+>
+>> It will wait 5s for APs to startup, if some AP not startup normally, it
+>
+>> will print 'CPU%d Stuck' or 'CPU%d: Not responding'.
+>
+>>
+>
+>> If it prints 'Stuck', it means the AP has received the SIPI interrupt and
+>
+>> begins to execute the code
+>
+>> 'ENTRY(trampoline_data)' (trampoline_64.S) , but be stuck in some places
+>
+>> before smp_callin()(smpboot.c).
+>
+>> The follow is the starup process of BSP and AP.
+>
+>> BSP:
+>
+>> start_kernel()
+>
+>>     ->smp_init()
+>
+>>        ->smp_boot_cpus()
+>
+>>          ->do_boot_cpu()
+>
+>>              ->start_ip = trampoline_address(); //set the address that AP
+>
+>> will go to execute
+>
+>>              ->wakeup_secondary_cpu_via_init(); // kick the secondary CPU
+>
+>>              ->for (timeout = 0; timeout < 50000; timeout++)
+>
+>>                  if (cpumask_test_cpu(cpu, cpu_callin_mask)) break;//
+>
+>> check if AP startup or not
+>
+>>
+>
+>> APs:
+>
+>> ENTRY(trampoline_data) (trampoline_64.S)
+>
+>>         ->ENTRY(secondary_startup_64) (head_64.S)
+>
+>>            ->start_secondary() (smpboot.c)
+>
+>>               ->cpu_init();
+>
+>>               ->smp_callin();
+>
+>>                   ->cpumask_set_cpu(cpuid, cpu_callin_mask); ->Note: if AP
+>
+>> comes here, the BSP will not prints the error message.
+>
+>>
+>
+>>   From above call process, we can be sure that, the AP has been stuck
+>
+>> between trampoline_data and the cpumask_set_cpu() in
+>
+>> smp_callin(), we look through these codes path carefully, and only found a
+>
+>> 'hlt' instruct that could block the process.
+>
+>> It is located in trampoline_data():
+>
+>>
+>
+>> ENTRY(trampoline_data)
+>
+>>           ...
+>
+>>
+>
+>>    call    verify_cpu              # Verify the cpu supports long mode
+>
+>>    testl   %eax, %eax              # Check for return code
+>
+>>    jnz     no_longmode
+>
+>>
+>
+>>           ...
+>
+>>
+>
+>> no_longmode:
+>
+>>    hlt
+>
+>>    jmp no_longmode
+>
+>>
+>
+>> For the process verify_cpu(),
+>
+>> we can only find the 'cpuid' sensitive instruct that could lead VM exit
+>
+>> from No-root mode.
+>
+>> This is why we doubt if cpuid emulation is wrong in KVM/QEMU that leading
+>
+>> to the fail in verify_cpu.
+>
+>>
+>
+>>   From the message in VM, we know vcpu1 and vcpu7 is something wrong.
+>
+>> [    5.060042] CPU1: Stuck ??
+>
+>> [   10.170815] CPU7: Stuck ??
+>
+>> [   10.171648] Brought up 6 CPUs
+>
+>>
+>
+>> Besides, the follow is the cpus message got from host.
+>
+>> 80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh
+>
+>> qemu-monitor-command instance-0000000
+>
+>> * CPU #0: pc=0x00007f64160c683d thread_id=68570
+>
+>>     CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+>
+>>     CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+>
+>>     CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+>
+>>     CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+>
+>>     CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+>
+>>     CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+>
+>>     CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+>
+>>
+>
+>> Oh, i also forgot to mention in the above message that, we have bond each
+>
+>> vCPU to different physical CPU in
+>
+>> host.
+>
+>>
+>
+>> Thanks,
+>
+>> zhanghailiang
+>
+>>
+>
+>>
+>
+>>
+>
+>>
+>
+>> --
+>
+>> To unsubscribe from this list: send the line "unsubscribe kvm" in
+>
+>> the body of a message to address@hidden
+>
+>> More majordomo info at
+http://vger.kernel.org/majordomo-info.html
+>
+>
+>
+>
+>
+> .
+>
+>
+>
+>
+>
+
+On 2015/7/7 20:21, Igor Mammedov wrote:
+On Tue, 7 Jul 2015 19:43:35 +0800
+zhanghailiang <address@hidden> wrote:
+On 2015/7/7 19:23, Igor Mammedov wrote:
+On Mon, 6 Jul 2015 17:59:10 +0800
+zhanghailiang <address@hidden> wrote:
+On 2015/7/6 16:45, Paolo Bonzini wrote:
+On 06/07/2015 09:54, zhanghailiang wrote:
+From host, we found that QEMU vcpu1 thread and vcpu7 thread were not
+consuming any cpu (Should be in idle state),
+All of VCPUs' stacks in host is like bellow:
+
+[<ffffffffa07089b5>] kvm_vcpu_block+0x65/0xa0 [kvm]
+[<ffffffffa071c7c1>] __vcpu_run+0xd1/0x260 [kvm]
+[<ffffffffa071d508>] kvm_arch_vcpu_ioctl_run+0x68/0x1a0 [kvm]
+[<ffffffffa0709cee>] kvm_vcpu_ioctl+0x38e/0x580 [kvm]
+[<ffffffff8116be8b>] do_vfs_ioctl+0x8b/0x3b0
+[<ffffffff8116c251>] sys_ioctl+0xa1/0xb0
+[<ffffffff81468092>] system_call_fastpath+0x16/0x1b
+[<00002ab9fe1f99a7>] 0x2ab9fe1f99a7
+[<ffffffffffffffff>] 0xffffffffffffffff
+
+We looked into the kernel codes that could leading to the above 'Stuck'
+warning,
+in current upstream there isn't any printk(...Stuck...) left since that code 
+path
+has been reworked.
+I've often seen this on over-committed host during guest CPUs up/down torture 
+test.
+Could you update guest kernel to upstream and see if issue reproduces?
+Hmm, Unfortunately, it is very hard to reproduce, and we are still trying to 
+reproduce it.
+
+For your test case, is it a kernel bug?
+Or is there any related patch could solve your test problem been merged into
+upstream ?
+I don't remember all prerequisite patches but you should be able to find
+http://marc.info/?l=linux-kernel&m=140326703108009&w=2
+"x86/smpboot: Initialize secondary CPU only if master CPU will wait for it"
+and then look for dependencies.
+Er, we have investigated this patch, and it is not related to our problem, :)
+
+Thanks.
+Thanks,
+zhanghailiang
+and found that the only possible is the emulation of 'cpuid' instruct in
+kvm/qemu has something wrong.
+But since we can’t reproduce this problem, we are not quite sure.
+Is there any possible that the cupid emulation in kvm/qemu has some bug ?
+Can you explain the relationship to the cpuid emulation?  What do the
+traces say about vcpus 1 and 7?
+OK, we searched the VM's kernel codes with the 'Stuck' message, and  it is 
+located in
+do_boot_cpu(). It's in BSP context, the call process is:
+BSP executes start_kernel() -> smp_init() -> smp_boot_cpus() -> do_boot_cpu() 
+-> wakeup_secondary_via_INIT() to trigger APs.
+It will wait 5s for APs to startup, if some AP not startup normally, it will 
+print 'CPU%d Stuck' or 'CPU%d: Not responding'.
+
+If it prints 'Stuck', it means the AP has received the SIPI interrupt and 
+begins to execute the code
+'ENTRY(trampoline_data)' (trampoline_64.S) , but be stuck in some places before 
+smp_callin()(smpboot.c).
+The follow is the starup process of BSP and AP.
+BSP:
+start_kernel()
+     ->smp_init()
+        ->smp_boot_cpus()
+          ->do_boot_cpu()
+              ->start_ip = trampoline_address(); //set the address that AP will 
+go to execute
+              ->wakeup_secondary_cpu_via_init(); // kick the secondary CPU
+              ->for (timeout = 0; timeout < 50000; timeout++)
+                  if (cpumask_test_cpu(cpu, cpu_callin_mask)) break;// check if 
+AP startup or not
+
+APs:
+ENTRY(trampoline_data) (trampoline_64.S)
+         ->ENTRY(secondary_startup_64) (head_64.S)
+            ->start_secondary() (smpboot.c)
+               ->cpu_init();
+               ->smp_callin();
+                   ->cpumask_set_cpu(cpuid, cpu_callin_mask); ->Note: if AP 
+comes here, the BSP will not prints the error message.
+
+   From above call process, we can be sure that, the AP has been stuck between 
+trampoline_data and the cpumask_set_cpu() in
+smp_callin(), we look through these codes path carefully, and only found a 
+'hlt' instruct that could block the process.
+It is located in trampoline_data():
+
+ENTRY(trampoline_data)
+           ...
+
+        call    verify_cpu              # Verify the cpu supports long mode
+        testl   %eax, %eax              # Check for return code
+        jnz     no_longmode
+
+           ...
+
+no_longmode:
+        hlt
+        jmp no_longmode
+
+For the process verify_cpu(),
+we can only find the 'cpuid' sensitive instruct that could lead VM exit from 
+No-root mode.
+This is why we doubt if cpuid emulation is wrong in KVM/QEMU that leading to 
+the fail in verify_cpu.
+
+   From the message in VM, we know vcpu1 and vcpu7 is something wrong.
+[    5.060042] CPU1: Stuck ??
+[   10.170815] CPU7: Stuck ??
+[   10.171648] Brought up 6 CPUs
+
+Besides, the follow is the cpus message got from host.
+80FF72F5-FF6D-E411-A8C8-000000821800:/home/fsp/hrg # virsh qemu-monitor-command 
+instance-0000000
+* CPU #0: pc=0x00007f64160c683d thread_id=68570
+     CPU #1: pc=0xffffffff810301f1 (halted) thread_id=68573
+     CPU #2: pc=0xffffffff810301e2 (halted) thread_id=68575
+     CPU #3: pc=0xffffffff810301e2 (halted) thread_id=68576
+     CPU #4: pc=0xffffffff810301e2 (halted) thread_id=68577
+     CPU #5: pc=0xffffffff810301e2 (halted) thread_id=68578
+     CPU #6: pc=0xffffffff810301e2 (halted) thread_id=68583
+     CPU #7: pc=0xffffffff810301f1 (halted) thread_id=68584
+
+Oh, i also forgot to mention in the above message that, we have bond each vCPU 
+to different physical CPU in
+host.
+
+Thanks,
+zhanghailiang
+
+
+
+
+--
+To unsubscribe from this list: send the line "unsubscribe kvm" in
+the body of a message to address@hidden
+More majordomo info at
+http://vger.kernel.org/majordomo-info.html
+.
+.
+
diff --git a/results/classifier/zero-shot/017/unknown/31349848 b/results/classifier/zero-shot/017/unknown/31349848
new file mode 100644
index 00000000..23dacfae
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/31349848
@@ -0,0 +1,213 @@
+permissions: 0.908
+PID: 0.903
+device: 0.881
+graphic: 0.876
+register: 0.870
+virtual: 0.869
+risc-v: 0.865
+performance: 0.864
+assembly: 0.855
+vnc: 0.854
+arm: 0.852
+semantic: 0.846
+socket: 0.846
+user-level: 0.845
+architecture: 0.845
+alpha: 0.837
+operating system: 0.830
+TCG: 0.828
+KVM: 0.827
+debug: 0.826
+files: 0.820
+boot: 0.815
+hypervisor: 0.815
+x86: 0.815
+kernel: 0.809
+VMM: 0.801
+ppc: 0.792
+i386: 0.782
+mistranslation: 0.781
+peripherals: 0.770
+network: 0.769
+--------------------
+hypervisor: 0.871
+virtual: 0.779
+debug: 0.733
+x86: 0.693
+user-level: 0.414
+TCG: 0.398
+peripherals: 0.296
+register: 0.222
+PID: 0.116
+device: 0.104
+operating system: 0.091
+i386: 0.089
+arm: 0.081
+files: 0.067
+socket: 0.062
+ppc: 0.051
+performance: 0.029
+risc-v: 0.026
+architecture: 0.023
+semantic: 0.022
+boot: 0.020
+VMM: 0.018
+kernel: 0.017
+assembly: 0.017
+alpha: 0.014
+vnc: 0.013
+network: 0.012
+permissions: 0.005
+KVM: 0.005
+graphic: 0.005
+mistranslation: 0.002
+
+[Qemu-devel]  [BUG] qemu stuck when detach host-usb device
+
+Description of problem:
+The guest has a host-usb device(Kingston Technology DataTraveler 100 G3/G4/SE9 
+G2), which is attached
+to xhci controller(on host). Qemu will stuck if I detach it from guest.
+
+How reproducible:
+100%
+
+Steps to Reproduce:
+1.            Use usb stick to copy files in guest , make it busy working.
+2.            virsh detach-device vm_name usb.xml
+
+Then qemu will stuck for 20s, I found this is because libusb_release_interface 
+block for 20s.
+Dmesg prints:
+
+[35442.034861] usb 4-2.1: Disable of device-initiated U1 failed.
+[35447.034993] usb 4-2.1: Disable of device-initiated U2 failed.
+[35452.035131] usb 4-2.1: Set SEL for device-initiated U1 failed.
+[35457.035259] usb 4-2.1: Set SEL for device-initiated U2 failed.
+
+Is this a hardware error or software's bug?
+
+On Tue, Nov 27, 2018 at 01:26:24AM +0000, linzhecheng wrote:
+>
+Description of problem:
+>
+The guest has a host-usb device(Kingston Technology DataTraveler 100
+>
+G3/G4/SE9 G2), which is attached
+>
+to xhci controller(on host). Qemu will stuck if I detach it from guest.
+>
+>
+How reproducible:
+>
+100%
+>
+>
+Steps to Reproduce:
+>
+1.            Use usb stick to copy files in guest , make it busy working.
+>
+2.            virsh detach-device vm_name usb.xml
+>
+>
+Then qemu will stuck for 20s, I found this is because
+>
+libusb_release_interface block for 20s.
+>
+Dmesg prints:
+>
+>
+[35442.034861] usb 4-2.1: Disable of device-initiated U1 failed.
+>
+[35447.034993] usb 4-2.1: Disable of device-initiated U2 failed.
+>
+[35452.035131] usb 4-2.1: Set SEL for device-initiated U1 failed.
+>
+[35457.035259] usb 4-2.1: Set SEL for device-initiated U2 failed.
+>
+>
+Is this a hardware error or software's bug?
+I'd guess software error, could be is libusb or (host) linux kernel.
+Cc'ing libusb-devel.
+
+cheers,
+  Gerd
+
+>
+-----Original Message-----
+>
+From: Gerd Hoffmann [
+mailto:address@hidden
+>
+Sent: Tuesday, November 27, 2018 2:09 PM
+>
+To: linzhecheng <address@hidden>
+>
+Cc: address@hidden; wangxin (U) <address@hidden>;
+>
+Zhoujian (jay) <address@hidden>; address@hidden
+>
+Subject: Re: [Qemu-devel] [BUG] qemu stuck when detach host-usb device
+>
+>
+On Tue, Nov 27, 2018 at 01:26:24AM +0000, linzhecheng wrote:
+>
+> Description of problem:
+>
+> The guest has a host-usb device(Kingston Technology DataTraveler 100
+>
+> G3/G4/SE9 G2), which is attached to xhci controller(on host). Qemu will
+>
+> stuck
+>
+if I detach it from guest.
+>
+>
+>
+> How reproducible:
+>
+> 100%
+>
+>
+>
+> Steps to Reproduce:
+>
+> 1.            Use usb stick to copy files in guest , make it busy working.
+>
+> 2.            virsh detach-device vm_name usb.xml
+>
+>
+>
+> Then qemu will stuck for 20s, I found this is because
+>
+> libusb_release_interface
+>
+block for 20s.
+>
+> Dmesg prints:
+>
+>
+>
+> [35442.034861] usb 4-2.1: Disable of device-initiated U1 failed.
+>
+> [35447.034993] usb 4-2.1: Disable of device-initiated U2 failed.
+>
+> [35452.035131] usb 4-2.1: Set SEL for device-initiated U1 failed.
+>
+> [35457.035259] usb 4-2.1: Set SEL for device-initiated U2 failed.
+>
+>
+>
+> Is this a hardware error or software's bug?
+>
+>
+I'd guess software error, could be is libusb or (host) linux kernel.
+>
+Cc'ing libusb-devel.
+Perhaps it's usb driver's bug. Could you also reproduce it?
+>
+>
+cheers,
+>
+Gerd
+
diff --git a/results/classifier/zero-shot/017/unknown/32484936 b/results/classifier/zero-shot/017/unknown/32484936
new file mode 100644
index 00000000..b8d1ed75
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/32484936
@@ -0,0 +1,282 @@
+PID: 0.839
+i386: 0.838
+x86: 0.836
+assembly: 0.835
+semantic: 0.832
+register: 0.831
+vnc: 0.830
+device: 0.830
+alpha: 0.829
+socket: 0.829
+kernel: 0.828
+permissions: 0.826
+debug: 0.825
+arm: 0.824
+virtual: 0.822
+hypervisor: 0.821
+architecture: 0.821
+files: 0.816
+performance: 0.815
+peripherals: 0.815
+graphic: 0.813
+risc-v: 0.813
+ppc: 0.813
+network: 0.811
+VMM: 0.810
+boot: 0.810
+TCG: 0.809
+operating system: 0.805
+user-level: 0.796
+mistranslation: 0.794
+KVM: 0.793
+--------------------
+debug: 0.860
+virtual: 0.676
+files: 0.094
+user-level: 0.045
+hypervisor: 0.042
+x86: 0.035
+TCG: 0.028
+register: 0.024
+operating system: 0.016
+ppc: 0.014
+PID: 0.010
+assembly: 0.009
+i386: 0.009
+semantic: 0.007
+alpha: 0.007
+risc-v: 0.006
+VMM: 0.006
+device: 0.006
+network: 0.005
+arm: 0.004
+graphic: 0.004
+kernel: 0.004
+performance: 0.004
+socket: 0.003
+vnc: 0.003
+KVM: 0.003
+peripherals: 0.002
+boot: 0.002
+architecture: 0.002
+mistranslation: 0.001
+permissions: 0.001
+
+[Qemu-devel] [Snapshot Bug?]Qcow2 meta data corruption
+
+Hi all,
+There was a problem about qcow2 image file happened in my serval vms and I could not figure it out,
+so have to ask for some help.
+Here is the thing:
+At first, I found there were some data corruption in a vm, so I did qemu-img check to all my vms.
+parts of check report:
+3-Leaked cluster 2926229 refcount=1 reference=0
+4-Leaked cluster 3021181 refcount=1 reference=0
+5-Leaked cluster 3021182 refcount=1 reference=0
+6-Leaked cluster 3021183 refcount=1 reference=0
+7-Leaked cluster 3021184 refcount=1 reference=0
+8-ERROR cluster 3102547 refcount=3 reference=4
+9-ERROR cluster 3111536 refcount=3 reference=4
+10-ERROR cluster 3113369 refcount=3 reference=4
+11-ERROR cluster 3235590 refcount=10 reference=11
+12-ERROR cluster 3235591 refcount=10 reference=11
+423-Warning: cluster offset=0xc000c00020000 is after the end of the image file, can't properly check refcounts.
+424-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+425-Warning: cluster offset=0xc0001000c0000 is after the end of the image file, can't properly check refcounts.
+426-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+427-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+428-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+429-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+430-Warning: cluster offset=0xc000c00010000 is after the end of the image file, can't properly check refcounts.
+After a futher look in, I found two l2 entries point to the same cluster, and that was found in serval qcow2 image files of different vms.
+Like this:
+table entry conflict (with our qcow2 check 
+tool):
+a table offset : 0x00000093f7080000 level : 2, l1 table entry 100, l2 table entry 7
+b table offset : 0x00000093f7080000 level : 2, l1 table entry 5, l2 table entry 7
+table entry conflict :
+a table offset : 0x00000000a01e0000 level : 2, l1 table entry 100, l2 table entry 19
+b table offset : 0x00000000a01e0000 level : 2, l1 table entry 5, l2 table entry 19
+table entry conflict :
+a table offset : 0x00000000a01d0000 level : 2, l1 table entry 100, l2 table entry 18
+b table offset : 0x00000000a01d0000 level : 2, l1 table entry 5, l2 table entry 18
+table entry conflict :
+a table offset : 0x00000000a01c0000 level : 2, l1 table entry 100, l2 table entry 17
+b table offset : 0x00000000a01c0000 level : 2, l1 table entry 5, l2 table entry 17
+table entry conflict :
+a table offset : 0x00000000a01b0000 level : 2, l1 table entry 100, l2 table entry 16
+b table offset : 0x00000000a01b0000 level : 2, l1 table entry 5, l2 table entry 16
+I think the problem is relate to the snapshot create, delete. But I cant reproduce it .
+Can Anyone give a hint about how this happen?
+Qemu version 2.0.1, I download the source code and make install it.
+Qemu parameters:
+/usr/bin/kvm -chardev socket,id=qmp,path=/var/run/qemu-server/5855899639838.qmp,server,nowait -mon chardev=qmp,mode=control -vnc :0,websocket,to=200 -enable-kvm -pidfile /var/run/qemu-server/5855899639838.pid -daemonize -name yfMailSvr-200.200.0.14 -smp sockets=1,cores=4 -cpu core2duo,hv_spinlocks=0xffff,hv_relaxed,hv_time,hv_vapic,+sse4.1,+sse4.2,+x2apic,+erms,+smep,+fsgsbase,+f16c,+dca,+pcid,+pdcm,+xtpr,+ht,+ss,+acpi,+ds -nodefaults -vga cirrus -k en-us -boot menu=on,splash-time=8000 -m 8192 -usb -drive if=none,id=drive-ide0,media=cdrom,aio=native -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0 -drive file=/sf/data/36b82a720d3a278001ba904e80c20c13e_ecf4bbbf3e94/images/host-ecf4bbbf3e94/784f3f08532a/yfMailSvr-200.200.0.14.vm/vm-disk-1.qcow2,if=none,id=drive-virtio1,cache=none,aio=native -device virtio-blk-pci,drive=drive-virtio1,id=virtio1,bus=pci.0,addr=0xb -drive file=/sf/data/36b82a720d3a278001ba904e80c20c13e_ecf4bbbf3e94/images/host-ecf4bbbf3e94/784f3f08532a/yfMailSvr-200.200.0.14.vm/vm-disk-2.qcow2,if=none,id=drive-virtio2,cache=none,aio=native -device virtio-blk-pci,drive=drive-virtio2,id=virtio2,bus=pci.0,addr=0xc,bootindex=101 -netdev type=tap,id=net0,ifname=585589963983800,script=/sf/etc/kvm/vtp-bridge,vhost=on,vhostforce=on -device virtio-net-pci,romfile=,mac=FE:FC:FE:F0:AB:BA,netdev=net0,bus=pci.0,addr=0x12,id=net0 -rtc driftfix=slew,clock=rt,base=localtime -global kvm-pit.lost_tick_policy=discard -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1
+Thanks
+Sangfor VT.
+leijian
+
+Hi all,
+There was a problem about qcow2 image file happened in my serval vms and I could not figure it out,
+so have to ask for some help.
+Here is the thing:
+At first, I found there were some data corruption in a vm, so I did qemu-img check to all my vms.
+parts of check report:
+3-Leaked cluster 2926229 refcount=1 reference=0
+4-Leaked cluster 3021181 refcount=1 reference=0
+5-Leaked cluster 3021182 refcount=1 reference=0
+6-Leaked cluster 3021183 refcount=1 reference=0
+7-Leaked cluster 3021184 refcount=1 reference=0
+8-ERROR cluster 3102547 refcount=3 reference=4
+9-ERROR cluster 3111536 refcount=3 reference=4
+10-ERROR cluster 3113369 refcount=3 reference=4
+11-ERROR cluster 3235590 refcount=10 reference=11
+12-ERROR cluster 3235591 refcount=10 reference=11
+423-Warning: cluster offset=0xc000c00020000 is after the end of the image file, can't properly check refcounts.
+424-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+425-Warning: cluster offset=0xc0001000c0000 is after the end of the image file, can't properly check refcounts.
+426-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+427-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+428-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+429-Warning: cluster offset=0xc000c000c0000 is after the end of the image file, can't properly check refcounts.
+430-Warning: cluster offset=0xc000c00010000 is after the end of the image file, can't properly check refcounts.
+After a futher look in, I found two l2 entries point to the same cluster, and that was found in serval qcow2 image files of different vms.
+Like this:
+table entry conflict (with our qcow2 check 
+tool):
+a table offset : 0x00000093f7080000 level : 2, l1 table entry 100, l2 table entry 7
+b table offset : 0x00000093f7080000 level : 2, l1 table entry 5, l2 table entry 7
+table entry conflict :
+a table offset : 0x00000000a01e0000 level : 2, l1 table entry 100, l2 table entry 19
+b table offset : 0x00000000a01e0000 level : 2, l1 table entry 5, l2 table entry 19
+table entry conflict :
+a table offset : 0x00000000a01d0000 level : 2, l1 table entry 100, l2 table entry 18
+b table offset : 0x00000000a01d0000 level : 2, l1 table entry 5, l2 table entry 18
+table entry conflict :
+a table offset : 0x00000000a01c0000 level : 2, l1 table entry 100, l2 table entry 17
+b table offset : 0x00000000a01c0000 level : 2, l1 table entry 5, l2 table entry 17
+table entry conflict :
+a table offset : 0x00000000a01b0000 level : 2, l1 table entry 100, l2 table entry 16
+b table offset : 0x00000000a01b0000 level : 2, l1 table entry 5, l2 table entry 16
+I think the problem is relate to the snapshot create, delete. But I cant reproduce it .
+Can Anyone give a hint about how this happen?
+Qemu version 2.0.1, I download the source code and make install it.
+Qemu parameters:
+/usr/bin/kvm -chardev socket,id=qmp,path=/var/run/qemu-server/5855899639838.qmp,server,nowait -mon chardev=qmp,mode=control -vnc :0,websocket,to=200 -enable-kvm -pidfile /var/run/qemu-server/5855899639838.pid -daemonize -name yfMailSvr-200.200.0.14 -smp sockets=1,cores=4 -cpu core2duo,hv_spinlocks=0xffff,hv_relaxed,hv_time,hv_vapic,+sse4.1,+sse4.2,+x2apic,+erms,+smep,+fsgsbase,+f16c,+dca,+pcid,+pdcm,+xtpr,+ht,+ss,+acpi,+ds -nodefaults -vga cirrus -k en-us -boot menu=on,splash-time=8000 -m 8192 -usb -drive if=none,id=drive-ide0,media=cdrom,aio=native -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0 -drive file=/sf/data/36b82a720d3a278001ba904e80c20c13e_ecf4bbbf3e94/images/host-ecf4bbbf3e94/784f3f08532a/yfMailSvr-200.200.0.14.vm/vm-disk-1.qcow2,if=none,id=drive-virtio1,cache=none,aio=native -device virtio-blk-pci,drive=drive-virtio1,id=virtio1,bus=pci.0,addr=0xb -drive file=/sf/data/36b82a720d3a278001ba904e80c20c13e_ecf4bbbf3e94/images/host-ecf4bbbf3e94/784f3f08532a/yfMailSvr-200.200.0.14.vm/vm-disk-2.qcow2,if=none,id=drive-virtio2,cache=none,aio=native -device virtio-blk-pci,drive=drive-virtio2,id=virtio2,bus=pci.0,addr=0xc,bootindex=101 -netdev type=tap,id=net0,ifname=585589963983800,script=/sf/etc/kvm/vtp-bridge,vhost=on,vhostforce=on -device virtio-net-pci,romfile=,mac=FE:FC:FE:F0:AB:BA,netdev=net0,bus=pci.0,addr=0x12,id=net0 -rtc driftfix=slew,clock=rt,base=localtime -global kvm-pit.lost_tick_policy=discard -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1
+Thanks
+Sangfor VT.
+leijian
+
+Am 03.04.2015 um 12:04 hat leijian geschrieben:
+>
+Hi all,
+>
+>
+There was a problem about qcow2 image file happened in my serval vms and I
+>
+could not figure it out,
+>
+so have to ask for some help.
+>
+[...]
+>
+I think the problem is relate to the snapshot create, delete. But I cant
+>
+reproduce it .
+>
+Can Anyone give a hint about how this happen?
+How did you create/delete your snapshots?
+
+More specifically, did you take care to never access your image from
+more than one process (except if both are read-only)? It happens
+occasionally that people use 'qemu-img snapshot' while the VM is
+running. This is wrong and can corrupt the image.
+
+Kevin
+
+On 04/07/2015 03:33 AM, Kevin Wolf wrote:
+>
+More specifically, did you take care to never access your image from
+>
+more than one process (except if both are read-only)? It happens
+>
+occasionally that people use 'qemu-img snapshot' while the VM is
+>
+running. This is wrong and can corrupt the image.
+Since this has been done by more than one person, I'm wondering if there
+is something we can do in the qcow2 format itself to make it harder for
+the casual user to cause corruption.  Maybe if we declare some bit or
+extension header for an image open for writing, which other readers can
+use as a warning ("this image is being actively modified; reading it may
+fail"), and other writers can use to deny access ("another process is
+already modifying this image"), where a writer should set that bit
+before writing anything else in the file, then clear it on exit.  Of
+course, you'd need a way to override the bit to actively clear it to
+recover from the case of a writer dying unexpectedly without resetting
+it normally.  And it won't help the case of a reader opening the file
+first, followed by a writer, where the reader could still get thrown off
+track.
+
+Or maybe we could document in the qcow2 format that all readers and
+writers should attempt to obtain the appropriate flock() permissions [or
+other appropriate advisory locking scheme] over the file header, so that
+cooperating processes that both use advisory locking will know when the
+file is in use by another process.
+
+-- 
+Eric Blake   eblake redhat com    +1-919-301-3266
+Libvirt virtualization library
+http://libvirt.org
+signature.asc
+Description:
+OpenPGP digital signature
+
+
+I created/deleted the snapshot by using qmp command "snapshot_blkdev_internal"/"snapshot_delete_blkdev_internal", and for avoiding the case you mentioned above, I have added the flock() permission in the qemu_open().
+Here is the test of doing qemu-img snapshot to a running vm:
+Diskfile:/sf/data/36c81f660e38b3b001b183da50b477d89_f8bc123b3e74/images/host-f8bc123b3e74/4a8d8728fcdc/Devried30030.vm/vm-disk-1.qcow2 is used! errno=Resource temporarily unavailable
+Does the two cluster entry happen to be the same because of the refcount of using cluster decrease to 0 unexpectedly and  is allocated again?
+If it was not accessing the image from more than one process, any other exceptions I can test for?
+Thanks
+leijian
+From:
+Eric Blake
+Date:
+2015-04-07 23:27
+To:
+Kevin Wolf
+;
+leijian
+CC:
+qemu-devel
+;
+stefanha
+Subject:
+Re: [Qemu-devel] [Snapshot Bug?]Qcow2 meta data 
+corruption
+On 04/07/2015 03:33 AM, Kevin Wolf wrote:
+> More specifically, did you take care to never access your image from
+> more than one process (except if both are read-only)? It happens
+> occasionally that people use 'qemu-img snapshot' while the VM is
+> running. This is wrong and can corrupt the image.
+Since this has been done by more than one person, I'm wondering if there
+is something we can do in the qcow2 format itself to make it harder for
+the casual user to cause corruption.  Maybe if we declare some bit or
+extension header for an image open for writing, which other readers can
+use as a warning ("this image is being actively modified; reading it may
+fail"), and other writers can use to deny access ("another process is
+already modifying this image"), where a writer should set that bit
+before writing anything else in the file, then clear it on exit.  Of
+course, you'd need a way to override the bit to actively clear it to
+recover from the case of a writer dying unexpectedly without resetting
+it normally.  And it won't help the case of a reader opening the file
+first, followed by a writer, where the reader could still get thrown off
+track.
+Or maybe we could document in the qcow2 format that all readers and
+writers should attempt to obtain the appropriate flock() permissions [or
+other appropriate advisory locking scheme] over the file header, so that
+cooperating processes that both use advisory locking will know when the
+file is in use by another process.
+--
+Eric Blake   eblake redhat com    +1-919-301-3266
+Libvirt virtualization library http://libvirt.org
+
diff --git a/results/classifier/zero-shot/017/unknown/57756589 b/results/classifier/zero-shot/017/unknown/57756589
new file mode 100644
index 00000000..2c594f99
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/57756589
@@ -0,0 +1,1480 @@
+peripherals: 0.875
+hypervisor: 0.863
+mistranslation: 0.861
+register: 0.858
+architecture: 0.856
+device: 0.853
+vnc: 0.851
+virtual: 0.845
+permissions: 0.842
+assembly: 0.841
+performance: 0.839
+ppc: 0.838
+semantic: 0.835
+operating system: 0.835
+TCG: 0.833
+VMM: 0.833
+arm: 0.828
+boot: 0.827
+user-level: 0.826
+graphic: 0.824
+network: 0.822
+socket: 0.820
+PID: 0.819
+KVM: 0.817
+kernel: 0.817
+files: 0.816
+x86: 0.814
+alpha: 0.810
+debug: 0.803
+i386: 0.782
+risc-v: 0.755
+--------------------
+x86: 0.867
+virtual: 0.827
+debug: 0.667
+hypervisor: 0.624
+vnc: 0.451
+socket: 0.358
+operating system: 0.243
+register: 0.146
+boot: 0.101
+KVM: 0.100
+kernel: 0.096
+files: 0.092
+PID: 0.083
+network: 0.075
+device: 0.070
+performance: 0.042
+TCG: 0.018
+ppc: 0.015
+VMM: 0.014
+architecture: 0.012
+permissions: 0.008
+semantic: 0.008
+assembly: 0.007
+peripherals: 0.007
+graphic: 0.004
+user-level: 0.004
+risc-v: 0.002
+mistranslation: 0.001
+alpha: 0.001
+i386: 0.000
+arm: 0.000
+
+[Qemu-devel] 答复: Re:   答复: Re:  答复: Re: [BUG]COLO failover hang
+
+amost like wiki，but panic in Primary Node.
+
+
+
+
+setp:
+
+1 
+
+Primary Node.
+
+x86_64-softmmu/qemu-system-x86_64 -enable-kvm -boot c -m 2048 -smp 2 -qmp stdio 
+-vnc :7 -name primary -cpu qemu64,+kvmclock -device piix3-usb-uhci -usb 
+-usbdevice tablet\
+
+  -drive 
+if=virtio,id=colo-disk0,driver=quorum,read-pattern=fifo,vote-threshold=1,
+
+   
+children.0.file.filename=/mnt/sdd/pure_IMG/linux/redhat/rhel_6.5_64_2U_ide,children.0.driver=qcow2
+ -S \
+
+  -netdev 
+tap,id=hn1,vhost=off,script=/etc/qemu-ifup2,downscript=/etc/qemu-ifdown2 \
+
+  -device e1000,id=e1,netdev=hn1,mac=52:a4:00:12:78:67 \
+
+  -netdev 
+tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \
+
+  -device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66 \
+
+  -chardev socket,id=mirror0,host=9.61.1.8,port=9003,server,nowait -chardev 
+socket,id=compare1,host=9.61.1.8,port=9004,server,nowait \
+
+  -chardev socket,id=compare0,host=9.61.1.8,port=9001,server,nowait -chardev 
+socket,id=compare0-0,host=9.61.1.8,port=9001 \
+
+  -chardev socket,id=compare_out,host=9.61.1.8,port=9005,server,nowait \
+
+  -chardev socket,id=compare_out0,host=9.61.1.8,port=9005 \
+
+  -object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0 \
+
+  -object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out 
+-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0 \
+
+  -object 
+colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0
+
+2 Second node:
+
+x86_64-softmmu/qemu-system-x86_64 -boot c -m 2048 -smp 2 -qmp stdio -vnc :7 
+-name secondary -enable-kvm -cpu qemu64,+kvmclock -device piix3-usb-uhci -usb 
+-usbdevice tablet\
+
+  -drive 
+if=none,id=colo-disk0,file.filename=/mnt/sdd/pure_IMG/linux/redhat/rhel_6.5_64_2U_ide,driver=qcow2,node-name=node0
+ \
+
+  -drive 
+if=virtio,id=active-disk0,driver=replication,mode=secondary,file.driver=qcow2,top-id=active-disk0,file.file.filename=/mnt/ramfstest/active_disk.img,file.backing.driver=qcow2,file.backing.file.filename=/mnt/ramfstest/hidden_disk.img,file.backing.backing=colo-disk0
+  \
+
+   -netdev 
+tap,id=hn1,vhost=off,script=/etc/qemu-ifup2,downscript=/etc/qemu-ifdown2 \
+
+  -device e1000,id=e1,netdev=hn1,mac=52:a4:00:12:78:67 \
+
+  -netdev 
+tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \
+
+  -device e1000,netdev=hn0,mac=52:a4:00:12:78:66 -chardev 
+socket,id=red0,host=9.61.1.8,port=9003 \
+
+  -chardev socket,id=red1,host=9.61.1.8,port=9004 \
+
+  -object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 \
+
+  -object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 \
+
+  -object filter-rewriter,id=rew0,netdev=hn0,queue=all -incoming tcp:0:8888
+
+3  Secondary node:
+
+{'execute':'qmp_capabilities'}
+
+{ 'execute': 'nbd-server-start',
+
+  'arguments': {'addr': {'type': 'inet', 'data': {'host': '9.61.1.7', 'port': 
+'8889'} } }
+
+}
+
+{'execute': 'nbd-server-add', 'arguments': {'device': 'colo-disk0', 'writable': 
+true } }
+
+4:Primary Node：
+
+{'execute':'qmp_capabilities'}
+
+
+{ 'execute': 'human-monitor-command',
+
+  'arguments': {'command-line': 'drive_add -n buddy 
+driver=replication,mode=primary,file.driver=nbd,file.host=9.61.1.7,file.port=8889,file.export=colo-disk0,node-name=node0'}}
+
+{ 'execute':'x-blockdev-change', 'arguments':{'parent': 'colo-disk0', 'node': 
+'node0' } }
+
+{ 'execute': 'migrate-set-capabilities',
+
+      'arguments': {'capabilities': [ {'capability': 'x-colo', 'state': true } 
+] } }
+
+{ 'execute': 'migrate', 'arguments': {'uri': 'tcp:9.61.1.7:8888' } }
+
+
+
+
+then can see two runing VMs, whenever you make changes to PVM, SVM will be 
+synced.  
+
+
+
+
+5：Primary Node：
+
+echo c ＞ /proc/sysrq-trigger
+
+
+
+
+６：Secondary node:
+
+{ 'execute': 'nbd-server-stop' }
+
+{ "execute": "x-colo-lost-heartbeat" }
+
+
+
+
+then can see the Secondary node hang at recvmsg recvmsg .
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人：王广10165992 address@hidden
+抄送人： address@hidden address@hidden
+日 期 ：2017年03月21日 16:27
+主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: [BUG]COLO failover hang
+
+
+
+
+
+Hi,
+
+On 2017/3/21 16:10, address@hidden wrote:
+＞ Thank you。
+＞
+＞ I have test aready。
+＞
+＞ When the Primary Node panic,the Secondary Node qemu hang at the same place。
+＞
+＞ Incorrding
+http://wiki.qemu-project.org/Features/COLO
+，kill Primary Node qemu 
+will not produce the problem,but Primary Node panic can。
+＞
+＞ I think due to the feature of channel does not support 
+QIO_CHANNEL_FEATURE_SHUTDOWN.
+＞
+＞
+
+Yes, you are right, when we do failover for primary/secondary VM, we will 
+shutdown the related
+fd in case it is stuck in the read/write fd.
+
+It seems that you didn't follow the above introduction exactly to do the test. 
+Could you
+share your test procedures ? Especially the commands used in the test.
+
+Thanks,
+Hailiang
+
+＞ when failover,channel_shutdown could not shut down the channel.
+＞
+＞
+＞ so the colo_process_incoming_thread will hang at recvmsg.
+＞
+＞
+＞ I test a patch:
+＞
+＞
+＞ diff --git a/migration/socket.c b/migration/socket.c
+＞
+＞
+＞ index 13966f1..d65a0ea 100644
+＞
+＞
+＞ --- a/migration/socket.c
+＞
+＞
+＞ +++ b/migration/socket.c
+＞
+＞
+＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞
+＞
+＞       }
+＞
+＞
+＞
+＞
+＞
+＞       trace_migration_socket_incoming_accepted()
+＞
+＞
+＞
+＞
+＞
+＞       qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+＞
+＞
+＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞
+＞
+＞       migration_channel_process_incoming(migrate_get_current(),
+＞
+＞
+＞                                          QIO_CHANNEL(sioc))
+＞
+＞
+＞       object_unref(OBJECT(sioc))
+＞
+＞
+＞
+＞
+＞ My test will not hang any more.
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞ 原始邮件
+＞
+＞
+＞
+＞ 发件人： address@hidden
+＞ 收件人：王广10165992 address@hidden
+＞ 抄送人： address@hidden address@hidden
+＞ 日 期 ：2017年03月21日 15:58
+＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  [BUG]COLO failover hang
+＞
+＞
+＞
+＞
+＞
+＞ Hi,Wang.
+＞
+＞ You can test this branch:
+＞
+＞
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+＞
+＞ and please follow wiki ensure your own configuration correctly.
+＞
+＞
+http://wiki.qemu-project.org/Features/COLO
+＞
+＞
+＞ Thanks
+＞
+＞ Zhang Chen
+＞
+＞
+＞ On 03/21/2017 03:27 PM, address@hidden wrote:
+＞ ＞
+＞ ＞ hi.
+＞ ＞
+＞ ＞ I test the git qemu master have the same problem.
+＞ ＞
+＞ ＞ (gdb) bt
+＞ ＞
+＞ ＞ #0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+＞ ＞ niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+＞ ＞
+＞ ＞ #1  0x00007f658e4aa0c2 in qio_channel_read
+＞ ＞ (address@hidden, address@hidden "",
+＞ ＞ address@hidden, address@hidden) at io/channel.c:114
+＞ ＞
+＞ ＞ #2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞ buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞
+＞ ＞ #3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+＞ ＞ migration/qemu-file.c:295
+＞ ＞
+＞ ＞ #4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+＞ ＞ address@hidden) at migration/qemu-file.c:555
+＞ ＞
+＞ ＞ #5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+＞ ＞ migration/qemu-file.c:568
+＞ ＞
+＞ ＞ #6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+＞ ＞ migration/qemu-file.c:648
+＞ ＞
+＞ ＞ #7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+＞ ＞ address@hidden) at migration/colo.c:244
+＞ ＞
+＞ ＞ #8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+＞ ＞ out＞, address@hidden,
+＞ ＞ address@hidden)
+＞ ＞
+＞ ＞     at migration/colo.c:264
+＞ ＞
+＞ ＞ #9  0x00007f658e3e740e in colo_process_incoming_thread
+＞ ＞ (opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+＞ ＞
+＞ ＞ #10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞
+＞ ＞ #11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+＞ ＞
+＞ ＞ (gdb) p ioc-＞name
+＞ ＞
+＞ ＞ $2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+＞ ＞
+＞ ＞ (gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+＞ ＞
+＞ ＞ $3 = 0
+＞ ＞
+＞ ＞
+＞ ＞ (gdb) bt
+＞ ＞
+＞ ＞ #0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+＞ ＞ condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+＞ ＞
+＞ ＞ #1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+＞ ＞ gmain.c:3054
+＞ ＞
+＞ ＞ #2  g_main_context_dispatch (context=＜optimized out＞,
+＞ ＞ address@hidden) at gmain.c:3630
+＞ ＞
+＞ ＞ #3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+＞ ＞
+＞ ＞ #4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+＞ ＞ util/main-loop.c:258
+＞ ＞
+＞ ＞ #5  main_loop_wait (address@hidden) at
+＞ ＞ util/main-loop.c:506
+＞ ＞
+＞ ＞ #6  0x00007fdccb526187 in main_loop () at vl.c:1898
+＞ ＞
+＞ ＞ #7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+＞ ＞ out＞) at vl.c:4709
+＞ ＞
+＞ ＞ (gdb) p ioc-＞features
+＞ ＞
+＞ ＞ $1 = 6
+＞ ＞
+＞ ＞ (gdb) p ioc-＞name
+＞ ＞
+＞ ＞ $2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+＞ ＞
+＞ ＞
+＞ ＞ May be socket_accept_incoming_migration should
+＞ ＞ call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+＞ ＞
+＞ ＞
+＞ ＞ thank you.
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞ 原始邮件
+＞ ＞ address@hidden
+＞ ＞ address@hidden
+＞ ＞ address@hidden@huawei.com＞
+＞ ＞ *日 期 ：*2017年03月16日 14:46
+＞ ＞ *主 题 ：**Re: [Qemu-devel] COLO failover hang*
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞ On 03/15/2017 05:06 PM, wangguang wrote:
+＞ ＞ ＞   am testing QEMU COLO feature described here [QEMU
+＞ ＞ ＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞ ＞ ＞
+＞ ＞ ＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞ ＞ ＞ hang at recvmsg in qio_channel_socket_readv.
+＞ ＞ ＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞ ＞ ＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞ ＞ ＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞ ＞ ＞
+＞ ＞ ＞ I found that the colo in qemu is not complete yet.
+＞ ＞ ＞ Do the colo have any plan for development?
+＞ ＞
+＞ ＞ Yes, We are developing. You can see some of patch we pushing.
+＞ ＞
+＞ ＞ ＞ Has anyone ever run it successfully? Any help is appreciated!
+＞ ＞
+＞ ＞ In our internal version can run it successfully,
+＞ ＞ The failover detail you can ask Zhanghailiang for help.
+＞ ＞ Next time if you have some question about COLO,
+＞ ＞ please cc me and zhanghailiang address@hidden
+＞ ＞
+＞ ＞
+＞ ＞ Thanks
+＞ ＞ Zhang Chen
+＞ ＞
+＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞ centos7.2+qemu2.7.50
+＞ ＞ ＞ (gdb) bt
+＞ ＞ ＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞ ＞ ＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized out＞,
+＞ ＞ ＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, errp=0x0) at
+＞ ＞ ＞ io/channel-socket.c:497
+＞ ＞ ＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞ ＞ ＞ address@hidden "", address@hidden,
+＞ ＞ ＞ address@hidden) at io/channel.c:97
+＞ ＞ ＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞ ＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞ ＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞ ＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞ ＞ ＞ migration/qemu-file.c:257
+＞ ＞ ＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞ ＞ ＞ address@hidden) at migration/qemu-file.c:510
+＞ ＞ ＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞ ＞ ＞ migration/qemu-file.c:523
+＞ ＞ ＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞ ＞ ＞ migration/qemu-file.c:603
+＞ ＞ ＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞ ＞ ＞ address@hidden) at migration/colo..c:215
+＞ ＞ ＞ #9  0x00007f3e0327250d in colo_wait_handle_message (errp=0x7f3d62bfaa48,
+＞ ＞ ＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞ ＞ ＞ migration/colo.c:546
+＞ ＞ ＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞ ＞ ＞ migration/colo.c:649
+＞ ＞ ＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞ ＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc.so.6
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞ --
+＞ ＞ ＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞ ＞ ＞ Sent from the Developer mailing list archive at Nabble.com.
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞ ＞
+＞ ＞
+＞ ＞ --
+＞ ＞ Thanks
+＞ ＞ Zhang Chen
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞
+＞ ＞
+＞
+
+diff --git a/migration/socket.c b/migration/socket.c
+
+
+index 13966f1..d65a0ea 100644
+
+
+--- a/migration/socket.c
+
+
++++ b/migration/socket.c
+
+
+@@ -147,8 +147,9 @@ static gboolean socket_accept_incoming_migration(QIOChannel 
+*ioc,
+
+
+     }
+
+
+ 
+
+
+     trace_migration_socket_incoming_accepted()
+
+
+    
+
+
+     qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+
+
++    qio_channel_set_feature(QIO_CHANNEL(sioc), QIO_CHANNEL_FEATURE_SHUTDOWN)
+
+
+     migration_channel_process_incoming(migrate_get_current(),
+
+
+                                        QIO_CHANNEL(sioc))
+
+
+     object_unref(OBJECT(sioc))
+
+
+
+
+Is this patch ok? 
+
+I have test it . The test could not hang any more.
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人： address@hidden address@hidden
+抄送人： address@hidden address@hidden address@hidden
+日 期 ：2017年03月22日 09:11
+主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: [BUG]COLO failover hang
+
+
+
+
+
+On 2017/3/21 19:56, Dr. David Alan Gilbert wrote:
+＞ * Hailiang Zhang (address@hidden) wrote:
+＞＞ Hi,
+＞＞
+＞＞ Thanks for reporting this, and i confirmed it in my test, and it is a bug.
+＞＞
+＞＞ Though we tried to call qemu_file_shutdown() to shutdown the related fd, in
+＞＞ case COLO thread/incoming thread is stuck in read/write() while do failover,
+＞＞ but it didn't take effect, because all the fd used by COLO (also migration)
+＞＞ has been wrapped by qio channel, and it will not call the shutdown API if
+＞＞ we didn't qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN).
+＞＞
+＞＞ Cc: Dr. David Alan Gilbert address@hidden
+＞＞
+＞＞ I doubted migration cancel has the same problem, it may be stuck in write()
+＞＞ if we tried to cancel migration.
+＞＞
+＞＞ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, 
+Error **errp)
+＞＞ {
+＞＞      qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing")
+＞＞      migration_channel_connect(s, ioc, NULL)
+＞＞      ... ...
+＞＞ We didn't call qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN) above,
+＞＞ and the
+＞＞ migrate_fd_cancel()
+＞＞ {
+＞＞   ... ...
+＞＞      if (s-＞state == MIGRATION_STATUS_CANCELLING && f) {
+＞＞          qemu_file_shutdown(f)  --＞ This will not take effect. No ?
+＞＞      }
+＞＞ }
+＞
+＞ (cc'd in Daniel Berrange).
+＞ I see that we call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN) 
+at the
+＞ top of qio_channel_socket_new  so I think that's safe isn't it?
+＞
+
+Hmm, you are right, this problem is only exist for the migration incoming fd, 
+thanks.
+
+＞ Dave
+＞
+＞＞ Thanks,
+＞＞ Hailiang
+＞＞
+＞＞ On 2017/3/21 16:10, address@hidden wrote:
+＞＞＞ Thank you。
+＞＞＞
+＞＞＞ I have test aready。
+＞＞＞
+＞＞＞ When the Primary Node panic,the Secondary Node qemu hang at the same place。
+＞＞＞
+＞＞＞ Incorrding
+http://wiki.qemu-project.org/Features/COLO
+，kill Primary Node 
+qemu will not produce the problem,but Primary Node panic can。
+＞＞＞
+＞＞＞ I think due to the feature of channel does not support 
+QIO_CHANNEL_FEATURE_SHUTDOWN.
+＞＞＞
+＞＞＞
+＞＞＞ when failover,channel_shutdown could not shut down the channel.
+＞＞＞
+＞＞＞
+＞＞＞ so the colo_process_incoming_thread will hang at recvmsg.
+＞＞＞
+＞＞＞
+＞＞＞ I test a patch:
+＞＞＞
+＞＞＞
+＞＞＞ diff --git a/migration/socket.c b/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ index 13966f1..d65a0ea 100644
+＞＞＞
+＞＞＞
+＞＞＞ --- a/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ +++ b/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞＞＞
+＞＞＞
+＞＞＞        }
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞        trace_migration_socket_incoming_accepted()
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞        qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+＞＞＞
+＞＞＞
+＞＞＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞＞＞
+＞＞＞
+＞＞＞        migration_channel_process_incoming(migrate_get_current(),
+＞＞＞
+＞＞＞
+＞＞＞                                           QIO_CHANNEL(sioc))
+＞＞＞
+＞＞＞
+＞＞＞        object_unref(OBJECT(sioc))
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ My test will not hang any more.
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ 原始邮件
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ 发件人： address@hidden
+＞＞＞ 收件人：王广10165992 address@hidden
+＞＞＞ 抄送人： address@hidden address@hidden
+＞＞＞ 日 期 ：2017年03月21日 15:58
+＞＞＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  [BUG]COLO failover hang
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ Hi,Wang.
+＞＞＞
+＞＞＞ You can test this branch:
+＞＞＞
+＞＞＞
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+＞＞＞
+＞＞＞ and please follow wiki ensure your own configuration correctly.
+＞＞＞
+＞＞＞
+http://wiki.qemu-project.org/Features/COLO
+＞＞＞
+＞＞＞
+＞＞＞ Thanks
+＞＞＞
+＞＞＞ Zhang Chen
+＞＞＞
+＞＞＞
+＞＞＞ On 03/21/2017 03:27 PM, address@hidden wrote:
+＞＞＞ ＞
+＞＞＞ ＞ hi.
+＞＞＞ ＞
+＞＞＞ ＞ I test the git qemu master have the same problem.
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) bt
+＞＞＞ ＞
+＞＞＞ ＞ #0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+＞＞＞ ＞ niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+＞＞＞ ＞
+＞＞＞ ＞ #1  0x00007f658e4aa0c2 in qio_channel_read
+＞＞＞ ＞ (address@hidden, address@hidden "",
+＞＞＞ ＞ address@hidden, address@hidden) at io/channel.c:114
+＞＞＞ ＞
+＞＞＞ ＞ #2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+＞＞＞ ＞ buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+＞＞＞ ＞ migration/qemu-file-channel.c:78
+＞＞＞ ＞
+＞＞＞ ＞ #3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+＞＞＞ ＞ migration/qemu-file.c:295
+＞＞＞ ＞
+＞＞＞ ＞ #4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+＞＞＞ ＞ address@hidden) at migration/qemu-file.c:555
+＞＞＞ ＞
+＞＞＞ ＞ #5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+＞＞＞ ＞ migration/qemu-file.c:568
+＞＞＞ ＞
+＞＞＞ ＞ #6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+＞＞＞ ＞ migration/qemu-file.c:648
+＞＞＞ ＞
+＞＞＞ ＞ #7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+＞＞＞ ＞ address@hidden) at migration/colo.c:244
+＞＞＞ ＞
+＞＞＞ ＞ #8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+＞＞＞ ＞ out＞, address@hidden,
+＞＞＞ ＞ address@hidden)
+＞＞＞ ＞
+＞＞＞ ＞     at migration/colo.c:264
+＞＞＞ ＞
+＞＞＞ ＞ #9  0x00007f658e3e740e in colo_process_incoming_thread
+＞＞＞ ＞ (opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+＞＞＞ ＞
+＞＞＞ ＞ #10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+＞＞＞ ＞
+＞＞＞ ＞ #11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞name
+＞＞＞ ＞
+＞＞＞ ＞ $2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+＞＞＞ ＞
+＞＞＞ ＞ $3 = 0
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) bt
+＞＞＞ ＞
+＞＞＞ ＞ #0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+＞＞＞ ＞ condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+＞＞＞ ＞
+＞＞＞ ＞ #1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+＞＞＞ ＞ gmain.c:3054
+＞＞＞ ＞
+＞＞＞ ＞ #2  g_main_context_dispatch (context=＜optimized out＞,
+＞＞＞ ＞ address@hidden) at gmain.c:3630
+＞＞＞ ＞
+＞＞＞ ＞ #3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+＞＞＞ ＞
+＞＞＞ ＞ #4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+＞＞＞ ＞ util/main-loop.c:258
+＞＞＞ ＞
+＞＞＞ ＞ #5  main_loop_wait (address@hidden) at
+＞＞＞ ＞ util/main-loop.c:506
+＞＞＞ ＞
+＞＞＞ ＞ #6  0x00007fdccb526187 in main_loop () at vl.c:1898
+＞＞＞ ＞
+＞＞＞ ＞ #7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+＞＞＞ ＞ out＞) at vl.c:4709
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞features
+＞＞＞ ＞
+＞＞＞ ＞ $1 = 6
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞name
+＞＞＞ ＞
+＞＞＞ ＞ $2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ May be socket_accept_incoming_migration should
+＞＞＞ ＞ call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ thank you.
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ 原始邮件
+＞＞＞ ＞ address@hidden
+＞＞＞ ＞ address@hidden
+＞＞＞ ＞ address@hidden@huawei.com＞
+＞＞＞ ＞ *日 期 ：*2017年03月16日 14:46
+＞＞＞ ＞ *主 题 ：**Re: [Qemu-devel] COLO failover hang*
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ On 03/15/2017 05:06 PM, wangguang wrote:
+＞＞＞ ＞ ＞   am testing QEMU COLO feature described here [QEMU
+＞＞＞ ＞ ＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞＞＞ ＞ ＞ hang at recvmsg in qio_channel_socket_readv.
+＞＞＞ ＞ ＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞＞＞ ＞ ＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞＞＞ ＞ ＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ I found that the colo in qemu is not complete yet.
+＞＞＞ ＞ ＞ Do the colo have any plan for development?
+＞＞＞ ＞
+＞＞＞ ＞ Yes, We are developing. You can see some of patch we pushing.
+＞＞＞ ＞
+＞＞＞ ＞ ＞ Has anyone ever run it successfully? Any help is appreciated!
+＞＞＞ ＞
+＞＞＞ ＞ In our internal version can run it successfully,
+＞＞＞ ＞ The failover detail you can ask Zhanghailiang for help.
+＞＞＞ ＞ Next time if you have some question about COLO,
+＞＞＞ ＞ please cc me and zhanghailiang address@hidden
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ Thanks
+＞＞＞ ＞ Zhang Chen
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ centos7.2+qemu2.7.50
+＞＞＞ ＞ ＞ (gdb) bt
+＞＞＞ ＞ ＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞＞＞ ＞ ＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized out＞,
+＞＞＞ ＞ ＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, errp=0x0) 
+at
+＞＞＞ ＞ ＞ io/channel-socket.c:497
+＞＞＞ ＞ ＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞＞＞ ＞ ＞ address@hidden "", address@hidden,
+＞＞＞ ＞ ＞ address@hidden) at io/channel.c:97
+＞＞＞ ＞ ＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞＞＞ ＞ ＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞＞＞ ＞ ＞ migration/qemu-file-channel.c:78
+＞＞＞ ＞ ＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:257
+＞＞＞ ＞ ＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞＞＞ ＞ ＞ address@hidden) at migration/qemu-file.c:510
+＞＞＞ ＞ ＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:523
+＞＞＞ ＞ ＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:603
+＞＞＞ ＞ ＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞＞＞ ＞ ＞ address@hidden) at migration/colo.c:215
+＞＞＞ ＞ ＞ #9  0x00007f3e0327250d in colo_wait_handle_message (errp=0x7f3d62bfaa48,
+＞＞＞ ＞ ＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞＞＞ ＞ ＞ migration/colo.c:546
+＞＞＞ ＞ ＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞＞＞ ＞ ＞ migration/colo.c:649
+＞＞＞ ＞ ＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞＞＞ ＞ ＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc..so.6
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ --
+＞＞＞ ＞ ＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞＞＞ ＞ ＞ Sent from the Developer mailing list archive at Nabble.com.
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ --
+＞＞＞ ＞ Thanks
+＞＞＞ ＞ Zhang Chen
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞
+＞＞
+＞ --
+＞ Dr. David Alan Gilbert / address@hidden / Manchester, UK
+＞
+＞ .
+＞
+
+Hi,
+
+On 2017/3/22 9:42, address@hidden wrote:
+diff --git a/migration/socket.c b/migration/socket.c
+
+
+index 13966f1..d65a0ea 100644
+
+
+--- a/migration/socket.c
+
+
++++ b/migration/socket.c
+
+
+@@ -147,8 +147,9 @@ static gboolean socket_accept_incoming_migration(QIOChannel 
+*ioc,
+
+
+      }
+
+
+
+
+
+      trace_migration_socket_incoming_accepted()
+
+
+
+
+
+      qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+
+
++    qio_channel_set_feature(QIO_CHANNEL(sioc), QIO_CHANNEL_FEATURE_SHUTDOWN)
+
+
+      migration_channel_process_incoming(migrate_get_current(),
+
+
+                                         QIO_CHANNEL(sioc))
+
+
+      object_unref(OBJECT(sioc))
+
+
+
+
+Is this patch ok?
+Yes, i think this works, but a better way maybe to call 
+qio_channel_set_feature()
+in qio_channel_socket_accept(), we didn't set the SHUTDOWN feature for the 
+socket accept fd,
+Or fix it by this:
+
+diff --git a/io/channel-socket.c b/io/channel-socket.c
+index f546c68..ce6894c 100644
+--- a/io/channel-socket.c
++++ b/io/channel-socket.c
+@@ -330,9 +330,8 @@ qio_channel_socket_accept(QIOChannelSocket *ioc,
+                           Error **errp)
+ {
+     QIOChannelSocket *cioc;
+-
+-    cioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET));
+-    cioc->fd = -1;
++
++    cioc = qio_channel_socket_new();
+     cioc->remoteAddrLen = sizeof(ioc->remoteAddr);
+     cioc->localAddrLen = sizeof(ioc->localAddr);
+
+
+Thanks,
+Hailiang
+I have test it . The test could not hang any more.
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人： address@hidden address@hidden
+抄送人： address@hidden address@hidden address@hidden
+日 期 ：2017年03月22日 09:11
+主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: [BUG]COLO failover hang
+
+
+
+
+
+On 2017/3/21 19:56, Dr. David Alan Gilbert wrote:
+＞ * Hailiang Zhang (address@hidden) wrote:
+＞＞ Hi,
+＞＞
+＞＞ Thanks for reporting this, and i confirmed it in my test, and it is a bug.
+＞＞
+＞＞ Though we tried to call qemu_file_shutdown() to shutdown the related fd, in
+＞＞ case COLO thread/incoming thread is stuck in read/write() while do failover,
+＞＞ but it didn't take effect, because all the fd used by COLO (also migration)
+＞＞ has been wrapped by qio channel, and it will not call the shutdown API if
+＞＞ we didn't qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN).
+＞＞
+＞＞ Cc: Dr. David Alan Gilbert address@hidden
+＞＞
+＞＞ I doubted migration cancel has the same problem, it may be stuck in write()
+＞＞ if we tried to cancel migration.
+＞＞
+＞＞ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, 
+Error **errp)
+＞＞ {
+＞＞      qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing")
+＞＞      migration_channel_connect(s, ioc, NULL)
+＞＞      ... ...
+＞＞ We didn't call qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN) above,
+＞＞ and the
+＞＞ migrate_fd_cancel()
+＞＞ {
+＞＞   ... ...
+＞＞      if (s-＞state == MIGRATION_STATUS_CANCELLING && f) {
+＞＞          qemu_file_shutdown(f)  --＞ This will not take effect. No ?
+＞＞      }
+＞＞ }
+＞
+＞ (cc'd in Daniel Berrange).
+＞ I see that we call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN) 
+at the
+＞ top of qio_channel_socket_new  so I think that's safe isn't it?
+＞
+
+Hmm, you are right, this problem is only exist for the migration incoming fd, 
+thanks.
+
+＞ Dave
+＞
+＞＞ Thanks,
+＞＞ Hailiang
+＞＞
+＞＞ On 2017/3/21 16:10, address@hidden wrote:
+＞＞＞ Thank you。
+＞＞＞
+＞＞＞ I have test aready。
+＞＞＞
+＞＞＞ When the Primary Node panic,the Secondary Node qemu hang at the same place。
+＞＞＞
+＞＞＞ Incorrding
+http://wiki.qemu-project.org/Features/COLO
+，kill Primary Node 
+qemu will not produce the problem,but Primary Node panic can。
+＞＞＞
+＞＞＞ I think due to the feature of channel does not support 
+QIO_CHANNEL_FEATURE_SHUTDOWN.
+＞＞＞
+＞＞＞
+＞＞＞ when failover,channel_shutdown could not shut down the channel.
+＞＞＞
+＞＞＞
+＞＞＞ so the colo_process_incoming_thread will hang at recvmsg.
+＞＞＞
+＞＞＞
+＞＞＞ I test a patch:
+＞＞＞
+＞＞＞
+＞＞＞ diff --git a/migration/socket.c b/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ index 13966f1..d65a0ea 100644
+＞＞＞
+＞＞＞
+＞＞＞ --- a/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ +++ b/migration/socket.c
+＞＞＞
+＞＞＞
+＞＞＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞＞＞
+＞＞＞
+＞＞＞        }
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞        trace_migration_socket_incoming_accepted()
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞        qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+＞＞＞
+＞＞＞
+＞＞＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞＞＞
+＞＞＞
+＞＞＞        migration_channel_process_incoming(migrate_get_current(),
+＞＞＞
+＞＞＞
+＞＞＞                                           QIO_CHANNEL(sioc))
+＞＞＞
+＞＞＞
+＞＞＞        object_unref(OBJECT(sioc))
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ My test will not hang any more.
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ 原始邮件
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ 发件人： address@hidden
+＞＞＞ 收件人：王广10165992 address@hidden
+＞＞＞ 抄送人： address@hidden address@hidden
+＞＞＞ 日 期 ：2017年03月21日 15:58
+＞＞＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  [BUG]COLO failover hang
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞
+＞＞＞ Hi,Wang.
+＞＞＞
+＞＞＞ You can test this branch:
+＞＞＞
+＞＞＞
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+＞＞＞
+＞＞＞ and please follow wiki ensure your own configuration correctly.
+＞＞＞
+＞＞＞
+http://wiki.qemu-project.org/Features/COLO
+＞＞＞
+＞＞＞
+＞＞＞ Thanks
+＞＞＞
+＞＞＞ Zhang Chen
+＞＞＞
+＞＞＞
+＞＞＞ On 03/21/2017 03:27 PM, address@hidden wrote:
+＞＞＞ ＞
+＞＞＞ ＞ hi.
+＞＞＞ ＞
+＞＞＞ ＞ I test the git qemu master have the same problem.
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) bt
+＞＞＞ ＞
+＞＞＞ ＞ #0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+＞＞＞ ＞ niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+＞＞＞ ＞
+＞＞＞ ＞ #1  0x00007f658e4aa0c2 in qio_channel_read
+＞＞＞ ＞ (address@hidden, address@hidden "",
+＞＞＞ ＞ address@hidden, address@hidden) at io/channel.c:114
+＞＞＞ ＞
+＞＞＞ ＞ #2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+＞＞＞ ＞ buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+＞＞＞ ＞ migration/qemu-file-channel.c:78
+＞＞＞ ＞
+＞＞＞ ＞ #3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+＞＞＞ ＞ migration/qemu-file.c:295
+＞＞＞ ＞
+＞＞＞ ＞ #4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+＞＞＞ ＞ address@hidden) at migration/qemu-file.c:555
+＞＞＞ ＞
+＞＞＞ ＞ #5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+＞＞＞ ＞ migration/qemu-file.c:568
+＞＞＞ ＞
+＞＞＞ ＞ #6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+＞＞＞ ＞ migration/qemu-file.c:648
+＞＞＞ ＞
+＞＞＞ ＞ #7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+＞＞＞ ＞ address@hidden) at migration/colo.c:244
+＞＞＞ ＞
+＞＞＞ ＞ #8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+＞＞＞ ＞ out＞, address@hidden,
+＞＞＞ ＞ address@hidden)
+＞＞＞ ＞
+＞＞＞ ＞     at migration/colo.c:264
+＞＞＞ ＞
+＞＞＞ ＞ #9  0x00007f658e3e740e in colo_process_incoming_thread
+＞＞＞ ＞ (opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+＞＞＞ ＞
+＞＞＞ ＞ #10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+＞＞＞ ＞
+＞＞＞ ＞ #11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞name
+＞＞＞ ＞
+＞＞＞ ＞ $2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+＞＞＞ ＞
+＞＞＞ ＞ $3 = 0
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) bt
+＞＞＞ ＞
+＞＞＞ ＞ #0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+＞＞＞ ＞ condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+＞＞＞ ＞
+＞＞＞ ＞ #1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+＞＞＞ ＞ gmain.c:3054
+＞＞＞ ＞
+＞＞＞ ＞ #2  g_main_context_dispatch (context=＜optimized out＞,
+＞＞＞ ＞ address@hidden) at gmain.c:3630
+＞＞＞ ＞
+＞＞＞ ＞ #3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+＞＞＞ ＞
+＞＞＞ ＞ #4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+＞＞＞ ＞ util/main-loop.c:258
+＞＞＞ ＞
+＞＞＞ ＞ #5  main_loop_wait (address@hidden) at
+＞＞＞ ＞ util/main-loop.c:506
+＞＞＞ ＞
+＞＞＞ ＞ #6  0x00007fdccb526187 in main_loop () at vl.c:1898
+＞＞＞ ＞
+＞＞＞ ＞ #7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+＞＞＞ ＞ out＞) at vl.c:4709
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞features
+＞＞＞ ＞
+＞＞＞ ＞ $1 = 6
+＞＞＞ ＞
+＞＞＞ ＞ (gdb) p ioc-＞name
+＞＞＞ ＞
+＞＞＞ ＞ $2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ May be socket_accept_incoming_migration should
+＞＞＞ ＞ call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ thank you.
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ 原始邮件
+＞＞＞ ＞ address@hidden
+＞＞＞ ＞ address@hidden
+＞＞＞ ＞ address@hidden@huawei.com＞
+＞＞＞ ＞ *日 期 ：*2017年03月16日 14:46
+＞＞＞ ＞ *主 题 ：**Re: [Qemu-devel] COLO failover hang*
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ On 03/15/2017 05:06 PM, wangguang wrote:
+＞＞＞ ＞ ＞   am testing QEMU COLO feature described here [QEMU
+＞＞＞ ＞ ＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞＞＞ ＞ ＞ hang at recvmsg in qio_channel_socket_readv.
+＞＞＞ ＞ ＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞＞＞ ＞ ＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞＞＞ ＞ ＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ I found that the colo in qemu is not complete yet.
+＞＞＞ ＞ ＞ Do the colo have any plan for development?
+＞＞＞ ＞
+＞＞＞ ＞ Yes, We are developing. You can see some of patch we pushing.
+＞＞＞ ＞
+＞＞＞ ＞ ＞ Has anyone ever run it successfully? Any help is appreciated!
+＞＞＞ ＞
+＞＞＞ ＞ In our internal version can run it successfully,
+＞＞＞ ＞ The failover detail you can ask Zhanghailiang for help.
+＞＞＞ ＞ Next time if you have some question about COLO,
+＞＞＞ ＞ please cc me and zhanghailiang address@hidden
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ Thanks
+＞＞＞ ＞ Zhang Chen
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ centos7.2+qemu2.7.50
+＞＞＞ ＞ ＞ (gdb) bt
+＞＞＞ ＞ ＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞＞＞ ＞ ＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized out＞,
+＞＞＞ ＞ ＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, errp=0x0) 
+at
+＞＞＞ ＞ ＞ io/channel-socket.c:497
+＞＞＞ ＞ ＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞＞＞ ＞ ＞ address@hidden "", address@hidden,
+＞＞＞ ＞ ＞ address@hidden) at io/channel.c:97
+＞＞＞ ＞ ＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞＞＞ ＞ ＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞＞＞ ＞ ＞ migration/qemu-file-channel.c:78
+＞＞＞ ＞ ＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:257
+＞＞＞ ＞ ＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞＞＞ ＞ ＞ address@hidden) at migration/qemu-file.c:510
+＞＞＞ ＞ ＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:523
+＞＞＞ ＞ ＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞＞＞ ＞ ＞ migration/qemu-file.c:603
+＞＞＞ ＞ ＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞＞＞ ＞ ＞ address@hidden) at migration/colo.c:215
+＞＞＞ ＞ ＞ #9  0x00007f3e0327250d in colo_wait_handle_message (errp=0x7f3d62bfaa48,
+＞＞＞ ＞ ＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞＞＞ ＞ ＞ migration/colo.c:546
+＞＞＞ ＞ ＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞＞＞ ＞ ＞ migration/colo.c:649
+＞＞＞ ＞ ＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞＞＞ ＞ ＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc..so.6
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞ --
+＞＞＞ ＞ ＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞＞＞ ＞ ＞ Sent from the Developer mailing list archive at Nabble.com.
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞ --
+＞＞＞ ＞ Thanks
+＞＞＞ ＞ Zhang Chen
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞ ＞
+＞＞＞
+＞＞
+＞ --
+＞ Dr. David Alan Gilbert / address@hidden / Manchester, UK
+＞
+＞ .
+＞
+
diff --git a/results/classifier/zero-shot/017/unknown/70294255 b/results/classifier/zero-shot/017/unknown/70294255
new file mode 100644
index 00000000..b0ed2237
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/70294255
@@ -0,0 +1,1120 @@
+risc-v: 0.863
+mistranslation: 0.862
+assembly: 0.861
+PID: 0.859
+semantic: 0.858
+socket: 0.858
+device: 0.857
+user-level: 0.857
+graphic: 0.857
+arm: 0.856
+debug: 0.854
+permissions: 0.854
+architecture: 0.851
+performance: 0.850
+kernel: 0.848
+network: 0.846
+operating system: 0.844
+register: 0.842
+vnc: 0.837
+alpha: 0.834
+files: 0.832
+virtual: 0.832
+hypervisor: 0.828
+peripherals: 0.819
+boot: 0.811
+i386: 0.811
+KVM: 0.806
+x86: 0.803
+ppc: 0.800
+TCG: 0.792
+VMM: 0.784
+--------------------
+socket: 0.753
+debug: 0.454
+network: 0.316
+operating system: 0.278
+files: 0.213
+hypervisor: 0.060
+virtual: 0.046
+kernel: 0.045
+performance: 0.044
+i386: 0.043
+alpha: 0.037
+TCG: 0.036
+permissions: 0.032
+device: 0.025
+x86: 0.024
+PID: 0.021
+boot: 0.014
+KVM: 0.013
+semantic: 0.011
+risc-v: 0.010
+VMM: 0.010
+register: 0.009
+assembly: 0.009
+architecture: 0.008
+arm: 0.007
+vnc: 0.006
+ppc: 0.006
+peripherals: 0.005
+user-level: 0.004
+graphic: 0.003
+mistranslation: 0.002
+
+[Qemu-devel] 答复: Re:   答复: Re:  答复: Re: 答复: Re: [BUG]COLO failover hang
+
+hi:
+
+yes.it is better.
+
+And should we delete 
+
+
+
+
+#ifdef WIN32
+
+    QIO_CHANNEL(cioc)-＞event = CreateEvent(NULL, FALSE, FALSE, NULL)
+
+#endif
+
+
+
+
+in qio_channel_socket_accept？
+
+qio_channel_socket_new already have it.
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人：王广10165992
+抄送人： address@hidden address@hidden address@hidden address@hidden
+日 期 ：2017年03月22日 15:03
+主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: 答复: Re: [BUG]COLO failover hang
+
+
+
+
+
+Hi,
+
+On 2017/3/22 9:42, address@hidden wrote:
+＞ diff --git a/migration/socket.c b/migration/socket.c
+＞
+＞
+＞ index 13966f1..d65a0ea 100644
+＞
+＞
+＞ --- a/migration/socket.c
+＞
+＞
+＞ +++ b/migration/socket.c
+＞
+＞
+＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞
+＞
+＞       }
+＞
+＞
+＞
+＞
+＞
+＞       trace_migration_socket_incoming_accepted()
+＞
+＞
+＞
+＞
+＞
+＞       qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+＞
+＞
+＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞
+＞
+＞       migration_channel_process_incoming(migrate_get_current(),
+＞
+＞
+＞                                          QIO_CHANNEL(sioc))
+＞
+＞
+＞       object_unref(OBJECT(sioc))
+＞
+＞
+＞
+＞
+＞ Is this patch ok?
+＞
+
+Yes, i think this works, but a better way maybe to call 
+qio_channel_set_feature()
+in qio_channel_socket_accept(), we didn't set the SHUTDOWN feature for the 
+socket accept fd,
+Or fix it by this:
+
+diff --git a/io/channel-socket.c b/io/channel-socket.c
+index f546c68..ce6894c 100644
+--- a/io/channel-socket.c
++++ b/io/channel-socket.c
+@@ -330,9 +330,8 @@ qio_channel_socket_accept(QIOChannelSocket *ioc,
+                            Error **errp)
+  {
+      QIOChannelSocket *cioc
+-
+-    cioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET))
+-    cioc-＞fd = -1
++
++    cioc = qio_channel_socket_new()
+      cioc-＞remoteAddrLen = sizeof(ioc-＞remoteAddr)
+      cioc-＞localAddrLen = sizeof(ioc-＞localAddr)
+
+
+Thanks,
+Hailiang
+
+＞ I have test it . The test could not hang any more.
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞ 原始邮件
+＞
+＞
+＞
+＞ 发件人： address@hidden
+＞ 收件人： address@hidden address@hidden
+＞ 抄送人： address@hidden address@hidden address@hidden
+＞ 日 期 ：2017年03月22日 09:11
+＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: [BUG]COLO failover hang
+＞
+＞
+＞
+＞
+＞
+＞ On 2017/3/21 19:56, Dr. David Alan Gilbert wrote:
+＞ ＞ * Hailiang Zhang (address@hidden) wrote:
+＞ ＞＞ Hi,
+＞ ＞＞
+＞ ＞＞ Thanks for reporting this, and i confirmed it in my test, and it is a bug.
+＞ ＞＞
+＞ ＞＞ Though we tried to call qemu_file_shutdown() to shutdown the related fd, in
+＞ ＞＞ case COLO thread/incoming thread is stuck in read/write() while do 
+failover,
+＞ ＞＞ but it didn't take effect, because all the fd used by COLO (also migration)
+＞ ＞＞ has been wrapped by qio channel, and it will not call the shutdown API if
+＞ ＞＞ we didn't qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN).
+＞ ＞＞
+＞ ＞＞ Cc: Dr. David Alan Gilbert address@hidden
+＞ ＞＞
+＞ ＞＞ I doubted migration cancel has the same problem, it may be stuck in write()
+＞ ＞＞ if we tried to cancel migration.
+＞ ＞＞
+＞ ＞＞ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, 
+Error **errp)
+＞ ＞＞ {
+＞ ＞＞      qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing")
+＞ ＞＞      migration_channel_connect(s, ioc, NULL)
+＞ ＞＞      ... ...
+＞ ＞＞ We didn't call qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN) above,
+＞ ＞＞ and the
+＞ ＞＞ migrate_fd_cancel()
+＞ ＞＞ {
+＞ ＞＞   ... ...
+＞ ＞＞      if (s-＞state == MIGRATION_STATUS_CANCELLING && f) {
+＞ ＞＞          qemu_file_shutdown(f)  --＞ This will not take effect. No ?
+＞ ＞＞      }
+＞ ＞＞ }
+＞ ＞
+＞ ＞ (cc'd in Daniel Berrange).
+＞ ＞ I see that we call qio_channel_set_feature(ioc, 
+QIO_CHANNEL_FEATURE_SHUTDOWN) at the
+＞ ＞ top of qio_channel_socket_new  so I think that's safe isn't it?
+＞ ＞
+＞
+＞ Hmm, you are right, this problem is only exist for the migration incoming fd, 
+thanks.
+＞
+＞ ＞ Dave
+＞ ＞
+＞ ＞＞ Thanks,
+＞ ＞＞ Hailiang
+＞ ＞＞
+＞ ＞＞ On 2017/3/21 16:10, address@hidden wrote:
+＞ ＞＞＞ Thank you。
+＞ ＞＞＞
+＞ ＞＞＞ I have test aready。
+＞ ＞＞＞
+＞ ＞＞＞ When the Primary Node panic,the Secondary Node qemu hang at the same 
+place。
+＞ ＞＞＞
+＞ ＞＞＞ Incorrding
+http://wiki.qemu-project.org/Features/COLO
+，kill Primary Node 
+qemu will not produce the problem,but Primary Node panic can。
+＞ ＞＞＞
+＞ ＞＞＞ I think due to the feature of channel does not support 
+QIO_CHANNEL_FEATURE_SHUTDOWN.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ when failover,channel_shutdown could not shut down the channel.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ so the colo_process_incoming_thread will hang at recvmsg.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ I test a patch:
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ diff --git a/migration/socket.c b/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ index 13966f1..d65a0ea 100644
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ --- a/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ +++ b/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        }
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        trace_migration_socket_incoming_accepted()
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        qio_channel_set_name(QIO_CHANNEL(sioc), 
+"migration-socket-incoming")
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        migration_channel_process_incoming(migrate_get_current(),
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞                                           QIO_CHANNEL(sioc))
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        object_unref(OBJECT(sioc))
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ My test will not hang any more.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ 原始邮件
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ 发件人： address@hidden
+＞ ＞＞＞ 收件人：王广10165992 address@hidden
+＞ ＞＞＞ 抄送人： address@hidden address@hidden
+＞ ＞＞＞ 日 期 ：2017年03月21日 15:58
+＞ ＞＞＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  [BUG]COLO failover hang
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ Hi,Wang.
+＞ ＞＞＞
+＞ ＞＞＞ You can test this branch:
+＞ ＞＞＞
+＞ ＞＞＞
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+＞ ＞＞＞
+＞ ＞＞＞ and please follow wiki ensure your own configuration correctly.
+＞ ＞＞＞
+＞ ＞＞＞
+http://wiki.qemu-project.org/Features/COLO
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ Thanks
+＞ ＞＞＞
+＞ ＞＞＞ Zhang Chen
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ On 03/21/2017 03:27 PM, address@hidden wrote:
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ hi.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ I test the git qemu master have the same problem.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+＞ ＞＞＞ ＞ niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #1  0x00007f658e4aa0c2 in qio_channel_read
+＞ ＞＞＞ ＞ (address@hidden, address@hidden "",
+＞ ＞＞＞ ＞ address@hidden, address@hidden) at io/channel.c:114
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞＞＞ ＞ buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+＞ ＞＞＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:295
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+＞ ＞＞＞ ＞ address@hidden) at migration/qemu-file.c:555
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:568
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:648
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+＞ ＞＞＞ ＞ address@hidden) at migration/colo.c:244
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+＞ ＞＞＞ ＞ out＞, address@hidden,
+＞ ＞＞＞ ＞ address@hidden)
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞     at migration/colo.c:264
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #9  0x00007f658e3e740e in colo_process_incoming_thread
+＞ ＞＞＞ ＞ (opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞name
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $3 = 0
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+＞ ＞＞＞ ＞ condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+＞ ＞＞＞ ＞ gmain.c:3054
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #2  g_main_context_dispatch (context=＜optimized out＞,
+＞ ＞＞＞ ＞ address@hidden) at gmain.c:3630
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+＞ ＞＞＞ ＞ util/main-loop.c:258
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #5  main_loop_wait (address@hidden) at
+＞ ＞＞＞ ＞ util/main-loop.c:506
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #6  0x00007fdccb526187 in main_loop () at vl.c:1898
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+＞ ＞＞＞ ＞ out＞) at vl.c:4709
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞features
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $1 = 6
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞name
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ May be socket_accept_incoming_migration should
+＞ ＞＞＞ ＞ call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ thank you.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ 原始邮件
+＞ ＞＞＞ ＞ address@hidden
+＞ ＞＞＞ ＞ address@hidden
+＞ ＞＞＞ ＞ address@hidden@huawei.com＞
+＞ ＞＞＞ ＞ *日 期 ：*2017年03月16日 14:46
+＞ ＞＞＞ ＞ *主 题 ：**Re: [Qemu-devel] COLO failover hang*
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ On 03/15/2017 05:06 PM, wangguang wrote:
+＞ ＞＞＞ ＞ ＞   am testing QEMU COLO feature described here [QEMU
+＞ ＞＞＞ ＞ ＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞ ＞＞＞ ＞ ＞ hang at recvmsg in qio_channel_socket_readv.
+＞ ＞＞＞ ＞ ＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞ ＞＞＞ ＞ ＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞ ＞＞＞ ＞ ＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ I found that the colo in qemu is not complete yet.
+＞ ＞＞＞ ＞ ＞ Do the colo have any plan for development?
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ Yes, We are developing. You can see some of patch we pushing.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ ＞ Has anyone ever run it successfully? Any help is appreciated!
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ In our internal version can run it successfully,
+＞ ＞＞＞ ＞ The failover detail you can ask Zhanghailiang for help.
+＞ ＞＞＞ ＞ Next time if you have some question about COLO,
+＞ ＞＞＞ ＞ please cc me and zhanghailiang address@hidden
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ Thanks
+＞ ＞＞＞ ＞ Zhang Chen
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ centos7.2+qemu2.7.50
+＞ ＞＞＞ ＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞ ＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞ ＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized 
+out＞,
+＞ ＞＞＞ ＞ ＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, 
+errp=0x0) at
+＞ ＞＞＞ ＞ ＞ io/channel-socket.c:497
+＞ ＞＞＞ ＞ ＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden "", address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden) at io/channel.c:97
+＞ ＞＞＞ ＞ ＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞＞＞ ＞ ＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞＞＞ ＞ ＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:257
+＞ ＞＞＞ ＞ ＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden) at migration/qemu-file.c:510
+＞ ＞＞＞ ＞ ＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:523
+＞ ＞＞＞ ＞ ＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:603
+＞ ＞＞＞ ＞ ＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞ ＞＞＞ ＞ ＞ address@hidden) at migration/colo.c:215
+＞ ＞＞＞ ＞ ＞ #9  0x00007f3e0327250d in colo_wait_handle_message 
+(errp=0x7f3d62bfaa48,
+＞ ＞＞＞ ＞ ＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞ ＞＞＞ ＞ ＞ migration/colo.c:546
+＞ ＞＞＞ ＞ ＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞ ＞＞＞ ＞ ＞ migration/colo.c:649
+＞ ＞＞＞ ＞ ＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞ ＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc..so.6
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ --
+＞ ＞＞＞ ＞ ＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞ ＞＞＞ ＞ ＞ Sent from the Developer mailing list archive at Nabble.com.
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ --
+＞ ＞＞＞ ＞ Thanks
+＞ ＞＞＞ ＞ Zhang Chen
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞
+＞ ＞＞
+＞ ＞ --
+＞ ＞ Dr. David Alan Gilbert / address@hidden / Manchester, UK
+＞ ＞
+＞ ＞ .
+＞ ＞
+＞
+
+On 2017/3/22 16:09, address@hidden wrote:
+hi:
+
+yes.it is better.
+
+And should we delete
+Yes, you are right.
+#ifdef WIN32
+
+     QIO_CHANNEL(cioc)-＞event = CreateEvent(NULL, FALSE, FALSE, NULL)
+
+#endif
+
+
+
+
+in qio_channel_socket_accept？
+
+qio_channel_socket_new already have it.
+
+
+
+
+
+
+
+
+
+
+
+
+原始邮件
+
+
+
+发件人： address@hidden
+收件人：王广10165992
+抄送人： address@hidden address@hidden address@hidden address@hidden
+日 期 ：2017年03月22日 15:03
+主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: 答复: Re: [BUG]COLO failover hang
+
+
+
+
+
+Hi,
+
+On 2017/3/22 9:42, address@hidden wrote:
+＞ diff --git a/migration/socket.c b/migration/socket.c
+＞
+＞
+＞ index 13966f1..d65a0ea 100644
+＞
+＞
+＞ --- a/migration/socket.c
+＞
+＞
+＞ +++ b/migration/socket.c
+＞
+＞
+＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞
+＞
+＞       }
+＞
+＞
+＞
+＞
+＞
+＞       trace_migration_socket_incoming_accepted()
+＞
+＞
+＞
+＞
+＞
+＞       qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming")
+＞
+＞
+＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞
+＞
+＞       migration_channel_process_incoming(migrate_get_current(),
+＞
+＞
+＞                                          QIO_CHANNEL(sioc))
+＞
+＞
+＞       object_unref(OBJECT(sioc))
+＞
+＞
+＞
+＞
+＞ Is this patch ok?
+＞
+
+Yes, i think this works, but a better way maybe to call 
+qio_channel_set_feature()
+in qio_channel_socket_accept(), we didn't set the SHUTDOWN feature for the 
+socket accept fd,
+Or fix it by this:
+
+diff --git a/io/channel-socket.c b/io/channel-socket.c
+index f546c68..ce6894c 100644
+--- a/io/channel-socket.c
++++ b/io/channel-socket.c
+@@ -330,9 +330,8 @@ qio_channel_socket_accept(QIOChannelSocket *ioc,
+                             Error **errp)
+   {
+       QIOChannelSocket *cioc
+-
+-    cioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET))
+-    cioc-＞fd = -1
++
++    cioc = qio_channel_socket_new()
+       cioc-＞remoteAddrLen = sizeof(ioc-＞remoteAddr)
+       cioc-＞localAddrLen = sizeof(ioc-＞localAddr)
+
+
+Thanks,
+Hailiang
+
+＞ I have test it . The test could not hang any more.
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞
+＞ 原始邮件
+＞
+＞
+＞
+＞ 发件人： address@hidden
+＞ 收件人： address@hidden address@hidden
+＞ 抄送人： address@hidden address@hidden address@hidden
+＞ 日 期 ：2017年03月22日 09:11
+＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  答复: Re: [BUG]COLO failover hang
+＞
+＞
+＞
+＞
+＞
+＞ On 2017/3/21 19:56, Dr. David Alan Gilbert wrote:
+＞ ＞ * Hailiang Zhang (address@hidden) wrote:
+＞ ＞＞ Hi,
+＞ ＞＞
+＞ ＞＞ Thanks for reporting this, and i confirmed it in my test, and it is a bug.
+＞ ＞＞
+＞ ＞＞ Though we tried to call qemu_file_shutdown() to shutdown the related fd, in
+＞ ＞＞ case COLO thread/incoming thread is stuck in read/write() while do 
+failover,
+＞ ＞＞ but it didn't take effect, because all the fd used by COLO (also migration)
+＞ ＞＞ has been wrapped by qio channel, and it will not call the shutdown API if
+＞ ＞＞ we didn't qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN).
+＞ ＞＞
+＞ ＞＞ Cc: Dr. David Alan Gilbert address@hidden
+＞ ＞＞
+＞ ＞＞ I doubted migration cancel has the same problem, it may be stuck in write()
+＞ ＞＞ if we tried to cancel migration.
+＞ ＞＞
+＞ ＞＞ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, 
+Error **errp)
+＞ ＞＞ {
+＞ ＞＞      qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing")
+＞ ＞＞      migration_channel_connect(s, ioc, NULL)
+＞ ＞＞      ... ...
+＞ ＞＞ We didn't call qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN) above,
+＞ ＞＞ and the
+＞ ＞＞ migrate_fd_cancel()
+＞ ＞＞ {
+＞ ＞＞   ... ...
+＞ ＞＞      if (s-＞state == MIGRATION_STATUS_CANCELLING && f) {
+＞ ＞＞          qemu_file_shutdown(f)  --＞ This will not take effect. No ?
+＞ ＞＞      }
+＞ ＞＞ }
+＞ ＞
+＞ ＞ (cc'd in Daniel Berrange).
+＞ ＞ I see that we call qio_channel_set_feature(ioc, 
+QIO_CHANNEL_FEATURE_SHUTDOWN) at the
+＞ ＞ top of qio_channel_socket_new  so I think that's safe isn't it?
+＞ ＞
+＞
+＞ Hmm, you are right, this problem is only exist for the migration incoming fd, 
+thanks.
+＞
+＞ ＞ Dave
+＞ ＞
+＞ ＞＞ Thanks,
+＞ ＞＞ Hailiang
+＞ ＞＞
+＞ ＞＞ On 2017/3/21 16:10, address@hidden wrote:
+＞ ＞＞＞ Thank you。
+＞ ＞＞＞
+＞ ＞＞＞ I have test aready。
+＞ ＞＞＞
+＞ ＞＞＞ When the Primary Node panic,the Secondary Node qemu hang at the same 
+place。
+＞ ＞＞＞
+＞ ＞＞＞ Incorrding
+http://wiki.qemu-project.org/Features/COLO
+，kill Primary Node 
+qemu will not produce the problem,but Primary Node panic can。
+＞ ＞＞＞
+＞ ＞＞＞ I think due to the feature of channel does not support 
+QIO_CHANNEL_FEATURE_SHUTDOWN.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ when failover,channel_shutdown could not shut down the channel.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ so the colo_process_incoming_thread will hang at recvmsg.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ I test a patch:
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ diff --git a/migration/socket.c b/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ index 13966f1..d65a0ea 100644
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ --- a/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ +++ b/migration/socket.c
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ @@ -147,8 +147,9 @@ static gboolean 
+socket_accept_incoming_migration(QIOChannel *ioc,
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        }
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        trace_migration_socket_incoming_accepted()
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        qio_channel_set_name(QIO_CHANNEL(sioc), 
+"migration-socket-incoming")
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ +    qio_channel_set_feature(QIO_CHANNEL(sioc), 
+QIO_CHANNEL_FEATURE_SHUTDOWN)
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        migration_channel_process_incoming(migrate_get_current(),
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞                                           QIO_CHANNEL(sioc))
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞        object_unref(OBJECT(sioc))
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ My test will not hang any more.
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ 原始邮件
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ 发件人： address@hidden
+＞ ＞＞＞ 收件人：王广10165992 address@hidden
+＞ ＞＞＞ 抄送人： address@hidden address@hidden
+＞ ＞＞＞ 日 期 ：2017年03月21日 15:58
+＞ ＞＞＞ 主 题 ：Re: [Qemu-devel]  答复: Re:  [BUG]COLO failover hang
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ Hi,Wang.
+＞ ＞＞＞
+＞ ＞＞＞ You can test this branch:
+＞ ＞＞＞
+＞ ＞＞＞
+https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk
+＞ ＞＞＞
+＞ ＞＞＞ and please follow wiki ensure your own configuration correctly.
+＞ ＞＞＞
+＞ ＞＞＞
+http://wiki.qemu-project.org/Features/COLO
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ Thanks
+＞ ＞＞＞
+＞ ＞＞＞ Zhang Chen
+＞ ＞＞＞
+＞ ＞＞＞
+＞ ＞＞＞ On 03/21/2017 03:27 PM, address@hidden wrote:
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ hi.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ I test the git qemu master have the same problem.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #0  qio_channel_socket_readv (ioc=0x7f65911b4e50, iov=0x7f64ef3fd880,
+＞ ＞＞＞ ＞ niov=1, fds=0x0, nfds=0x0, errp=0x0) at io/channel-socket.c:461
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #1  0x00007f658e4aa0c2 in qio_channel_read
+＞ ＞＞＞ ＞ (address@hidden, address@hidden "",
+＞ ＞＞＞ ＞ address@hidden, address@hidden) at io/channel.c:114
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #2  0x00007f658e3ea990 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞＞＞ ＞ buf=0x7f65907cb838 "", pos=＜optimized out＞, size=32768) at
+＞ ＞＞＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #3  0x00007f658e3e97fc in qemu_fill_buffer (f=0x7f65907cb800) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:295
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #4  0x00007f658e3ea2e1 in qemu_peek_byte (address@hidden,
+＞ ＞＞＞ ＞ address@hidden) at migration/qemu-file.c:555
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #5  0x00007f658e3ea34b in qemu_get_byte (address@hidden) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:568
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #6  0x00007f658e3ea552 in qemu_get_be32 (address@hidden) at
+＞ ＞＞＞ ＞ migration/qemu-file.c:648
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #7  0x00007f658e3e66e5 in colo_receive_message (f=0x7f65907cb800,
+＞ ＞＞＞ ＞ address@hidden) at migration/colo.c:244
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #8  0x00007f658e3e681e in colo_receive_check_message (f=＜optimized
+＞ ＞＞＞ ＞ out＞, address@hidden,
+＞ ＞＞＞ ＞ address@hidden)
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞     at migration/colo.c:264
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #9  0x00007f658e3e740e in colo_process_incoming_thread
+＞ ＞＞＞ ＞ (opaque=0x7f658eb30360 ＜mis_current.31286＞) at migration/colo.c:577
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #10 0x00007f658be09df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #11 0x00007f65881983ed in clone () from /lib64/libc.so.6
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞name
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $2 = 0x7f658ff7d5c0 "migration-socket-incoming"
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞features        Do not support QIO_CHANNEL_FEATURE_SHUTDOWN
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $3 = 0
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #0  socket_accept_incoming_migration (ioc=0x7fdcceeafa90,
+＞ ＞＞＞ ＞ condition=G_IO_IN, opaque=0x7fdcceeafa90) at migration/socket.c:137
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #1  0x00007fdcc6966350 in g_main_dispatch (context=＜optimized out＞) at
+＞ ＞＞＞ ＞ gmain.c:3054
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #2  g_main_context_dispatch (context=＜optimized out＞,
+＞ ＞＞＞ ＞ address@hidden) at gmain.c:3630
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #3  0x00007fdccb8a6dcc in glib_pollfds_poll () at util/main-loop.c:213
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #4  os_host_main_loop_wait (timeout=＜optimized out＞) at
+＞ ＞＞＞ ＞ util/main-loop.c:258
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #5  main_loop_wait (address@hidden) at
+＞ ＞＞＞ ＞ util/main-loop.c:506
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #6  0x00007fdccb526187 in main_loop () at vl.c:1898
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ #7  main (argc=＜optimized out＞, argv=＜optimized out＞, envp=＜optimized
+＞ ＞＞＞ ＞ out＞) at vl.c:4709
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞features
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $1 = 6
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ (gdb) p ioc-＞name
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ $2 = 0x7fdcce1b1ab0 "migration-socket-listener"
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ May be socket_accept_incoming_migration should
+＞ ＞＞＞ ＞ call qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN)??
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ thank you.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ 原始邮件
+＞ ＞＞＞ ＞ address@hidden
+＞ ＞＞＞ ＞ address@hidden
+＞ ＞＞＞ ＞ address@hidden@huawei.com＞
+＞ ＞＞＞ ＞ *日 期 ：*2017年03月16日 14:46
+＞ ＞＞＞ ＞ *主 题 ：**Re: [Qemu-devel] COLO failover hang*
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ On 03/15/2017 05:06 PM, wangguang wrote:
+＞ ＞＞＞ ＞ ＞   am testing QEMU COLO feature described here [QEMU
+＞ ＞＞＞ ＞ ＞ Wiki](
+http://wiki.qemu-project.org/Features/COLO
+).
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ When the Primary Node panic,the Secondary Node qemu hang.
+＞ ＞＞＞ ＞ ＞ hang at recvmsg in qio_channel_socket_readv.
+＞ ＞＞＞ ＞ ＞ And  I run  { 'execute': 'nbd-server-stop' } and { "execute":
+＞ ＞＞＞ ＞ ＞ "x-colo-lost-heartbeat" } in Secondary VM's
+＞ ＞＞＞ ＞ ＞ monitor,the  Secondary Node qemu still hang at recvmsg .
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ I found that the colo in qemu is not complete yet.
+＞ ＞＞＞ ＞ ＞ Do the colo have any plan for development?
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ Yes, We are developing. You can see some of patch we pushing.
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ ＞ Has anyone ever run it successfully? Any help is appreciated!
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ In our internal version can run it successfully,
+＞ ＞＞＞ ＞ The failover detail you can ask Zhanghailiang for help.
+＞ ＞＞＞ ＞ Next time if you have some question about COLO,
+＞ ＞＞＞ ＞ please cc me and zhanghailiang address@hidden
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ Thanks
+＞ ＞＞＞ ＞ Zhang Chen
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ centos7.2+qemu2.7.50
+＞ ＞＞＞ ＞ ＞ (gdb) bt
+＞ ＞＞＞ ＞ ＞ #0  0x00007f3e00cc86ad in recvmsg () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞ ＞ #1  0x00007f3e0332b738 in qio_channel_socket_readv (ioc=＜optimized 
+out＞,
+＞ ＞＞＞ ＞ ＞ iov=＜optimized out＞, niov=＜optimized out＞, fds=0x0, nfds=0x0, 
+errp=0x0) at
+＞ ＞＞＞ ＞ ＞ io/channel-socket.c:497
+＞ ＞＞＞ ＞ ＞ #2  0x00007f3e03329472 in qio_channel_read (address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden "", address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden) at io/channel.c:97
+＞ ＞＞＞ ＞ ＞ #3  0x00007f3e032750e0 in channel_get_buffer (opaque=＜optimized out＞,
+＞ ＞＞＞ ＞ ＞ buf=0x7f3e05910f38 "", pos=＜optimized out＞, size=32768) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file-channel.c:78
+＞ ＞＞＞ ＞ ＞ #4  0x00007f3e0327412c in qemu_fill_buffer (f=0x7f3e05910f00) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:257
+＞ ＞＞＞ ＞ ＞ #5  0x00007f3e03274a41 in qemu_peek_byte (address@hidden,
+＞ ＞＞＞ ＞ ＞ address@hidden) at migration/qemu-file.c:510
+＞ ＞＞＞ ＞ ＞ #6  0x00007f3e03274aab in qemu_get_byte (address@hidden) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:523
+＞ ＞＞＞ ＞ ＞ #7  0x00007f3e03274cb2 in qemu_get_be32 (address@hidden) at
+＞ ＞＞＞ ＞ ＞ migration/qemu-file.c:603
+＞ ＞＞＞ ＞ ＞ #8  0x00007f3e03271735 in colo_receive_message (f=0x7f3e05910f00,
+＞ ＞＞＞ ＞ ＞ address@hidden) at migration/colo.c:215
+＞ ＞＞＞ ＞ ＞ #9  0x00007f3e0327250d in colo_wait_handle_message 
+(errp=0x7f3d62bfaa48,
+＞ ＞＞＞ ＞ ＞ checkpoint_request=＜synthetic pointer＞, f=＜optimized out＞) at
+＞ ＞＞＞ ＞ ＞ migration/colo.c:546
+＞ ＞＞＞ ＞ ＞ #10 colo_process_incoming_thread (opaque=0x7f3e067245e0) at
+＞ ＞＞＞ ＞ ＞ migration/colo.c:649
+＞ ＞＞＞ ＞ ＞ #11 0x00007f3e00cc1df3 in start_thread () from /lib64/libpthread.so.0
+＞ ＞＞＞ ＞ ＞ #12 0x00007f3dfc9c03ed in clone () from /lib64/libc..so.6
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞ --
+＞ ＞＞＞ ＞ ＞ View this message in context:
+http://qemu.11.n7.nabble.com/COLO-failover-hang-tp473250.html
+＞ ＞＞＞ ＞ ＞ Sent from the Developer mailing list archive at Nabble.com.
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞ --
+＞ ＞＞＞ ＞ Thanks
+＞ ＞＞＞ ＞ Zhang Chen
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞ ＞
+＞ ＞＞＞
+＞ ＞＞
+＞ ＞ --
+＞ ＞ Dr. David Alan Gilbert / address@hidden / Manchester, UK
+＞ ＞
+＞ ＞ .
+＞ ＞
+＞
+
diff --git a/results/classifier/zero-shot/017/unknown/80615920 b/results/classifier/zero-shot/017/unknown/80615920
new file mode 100644
index 00000000..0459849f
--- /dev/null
+++ b/results/classifier/zero-shot/017/unknown/80615920
@@ -0,0 +1,407 @@
+user-level: 0.849
+risc-v: 0.809
+KVM: 0.803
+mistranslation: 0.800
+TCG: 0.785
+x86: 0.779
+operating system: 0.777
+peripherals: 0.777
+i386: 0.773
+vnc: 0.768
+ppc: 0.768
+hypervisor: 0.764
+VMM: 0.759
+performance: 0.758
+permissions: 0.758
+register: 0.756
+architecture: 0.755
+files: 0.751
+boot: 0.750
+virtual: 0.749
+device: 0.748
+assembly: 0.747
+debug: 0.746
+arm: 0.744
+kernel: 0.738
+semantic: 0.737
+network: 0.732
+socket: 0.732
+graphic: 0.730
+PID: 0.727
+alpha: 0.726
+--------------------
+TCG: 0.928
+operating system: 0.873
+x86: 0.854
+kernel: 0.848
+debug: 0.296
+i386: 0.187
+performance: 0.112
+virtual: 0.069
+files: 0.046
+risc-v: 0.036
+PID: 0.035
+user-level: 0.023
+VMM: 0.020
+register: 0.012
+architecture: 0.009
+boot: 0.007
+assembly: 0.005
+KVM: 0.005
+device: 0.005
+semantic: 0.005
+hypervisor: 0.004
+alpha: 0.004
+graphic: 0.002
+ppc: 0.002
+network: 0.001
+peripherals: 0.001
+socket: 0.001
+vnc: 0.001
+permissions: 0.001
+arm: 0.001
+mistranslation: 0.001
+
+[BUG] accel/tcg: cpu_exec_longjmp_cleanup: assertion failed: (cpu == current_cpu)
+
+It seems there is a bug in SIGALRM handling when 486 system emulates x86_64 
+code.
+
+This code: 
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <signal.h>
+#include <unistd.h>
+
+pthread_t thread1, thread2;
+
+// Signal handler for SIGALRM
+void alarm_handler(int sig) {
+    // Do nothing, just wake up the other thread
+}
+
+// Thread 1 function
+void* thread1_func(void* arg) {
+    // Set up the signal handler for SIGALRM
+    signal(SIGALRM, alarm_handler);
+
+    // Wait for 5 seconds
+    sleep(1);
+
+    // Send SIGALRM signal to thread 2
+    pthread_kill(thread2, SIGALRM);
+
+    return NULL;
+}
+
+// Thread 2 function
+void* thread2_func(void* arg) {
+    // Wait for the SIGALRM signal
+    pause();
+
+    printf("Thread 2 woke up!\n");
+
+    return NULL;
+}
+
+int main() {
+    // Create thread 1
+    if (pthread_create(&thread1, NULL, thread1_func, NULL) != 0) {
+        fprintf(stderr, "Failed to create thread 1\n");
+        return 1;
+    }
+
+    // Create thread 2
+    if (pthread_create(&thread2, NULL, thread2_func, NULL) != 0) {
+        fprintf(stderr, "Failed to create thread 2\n");
+        return 1;
+    }
+
+    // Wait for both threads to finish
+    pthread_join(thread1, NULL);
+    pthread_join(thread2, NULL);
+
+    return 0;
+}
+
+
+Fails with this -strace log (there are also unsupported syscalls 334 and 435, 
+but it seems it doesn't affect the code much):
+
+...
+736 rt_sigaction(SIGALRM,0x000000001123ec20,0x000000001123ecc0) = 0
+736 clock_nanosleep(CLOCK_REALTIME,0,{tv_sec = 1,tv_nsec = 0},{tv_sec = 
+1,tv_nsec = 0})
+736 rt_sigprocmask(SIG_BLOCK,0x00000000109fad20,0x0000000010800b38,8) = 0
+736 Unknown syscall 435
+736 
+clone(CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|
+ ...
+736 rt_sigprocmask(SIG_SETMASK,0x0000000010800b38,NULL,8)
+736 set_robust_list(0x11a419a0,0) = -1 errno=38 (Function not implemented)
+736 rt_sigprocmask(SIG_SETMASK,0x0000000011a41fb0,NULL,8) = 0
+ = 0
+736 pause(0,0,2,277186368,0,295966400)
+736 
+futex(0x000000001123f990,FUTEX_CLOCK_REALTIME|FUTEX_WAIT_BITSET,738,NULL,NULL,0)
+ = 0
+736 rt_sigprocmask(SIG_BLOCK,0x00000000109fad20,0x000000001123ee88,8) = 0
+736 getpid() = 736
+736 tgkill(736,739,SIGALRM) = 0
+ = -1 errno=4 (Interrupted system call)
+--- SIGALRM {si_signo=SIGALRM, si_code=SI_TKILL, si_pid=736, si_uid=0} ---
+0x48874a != 0x3c69e10
+736 rt_sigprocmask(SIG_SETMASK,0x000000001123ee88,NULL,8) = 0
+**
+ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion failed: 
+(cpu == current_cpu)
+Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion 
+failed: (cpu == current_cpu)
+0x48874a != 0x3c69e10
+**
+ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion failed: 
+(cpu == current_cpu)
+Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion 
+failed: (cpu == current_cpu)
+# 
+
+The code fails either with or without -singlestep, the command line:
+
+/usr/bin/qemu-x86_64 -L /opt/x86_64 -strace -singlestep  /opt/x86_64/alarm.bin
+
+Source code of QEMU 8.1.1 was modified with patch "[PATCH] qemu/timer: Don't 
+use RDTSC on i486" [1], 
+with added few ioctls (not relevant) and cpu_exec_longjmp_cleanup() now prints 
+current pointers of 
+cpu and current_cpu (line "0x48874a != 0x3c69e10").
+
+config.log (built as a part of buildroot, basically the minimal possible 
+configuration for running x86_64 on 486):
+
+# Configured with: 
+'/mnt/hd_8tb_p1/p1/home/crossgen/buildroot_486_2/output/build/qemu-8.1.1/configure'
+ '--prefix=/usr' 
+'--cross-prefix=/mnt/hd_8tb_p1/p1/home/crossgen/buildroot_486_2/output/host/bin/i486-buildroot-linux-gnu-'
+ '--audio-drv-list=' 
+'--python=/mnt/hd_8tb_p1/p1/home/crossgen/buildroot_486_2/output/host/bin/python3'
+ 
+'--ninja=/mnt/hd_8tb_p1/p1/home/crossgen/buildroot_486_2/output/host/bin/ninja' 
+'--disable-alsa' '--disable-bpf' '--disable-brlapi' '--disable-bsd-user' 
+'--disable-cap-ng' '--disable-capstone' '--disable-containers' 
+'--disable-coreaudio' '--disable-curl' '--disable-curses' 
+'--disable-dbus-display' '--disable-docs' '--disable-dsound' '--disable-hvf' 
+'--disable-jack' '--disable-libiscsi' '--disable-linux-aio' 
+'--disable-linux-io-uring' '--disable-malloc-trim' '--disable-membarrier' 
+'--disable-mpath' '--disable-netmap' '--disable-opengl' '--disable-oss' 
+'--disable-pa' '--disable-rbd' '--disable-sanitizers' '--disable-selinux' 
+'--disable-sparse' '--disable-strip' '--disable-vde' '--disable-vhost-crypto' 
+'--disable-vhost-user-blk-server' '--disable-virtfs' '--disable-whpx' 
+'--disable-xen' '--disable-attr' '--disable-kvm' '--disable-vhost-net' 
+'--disable-download' '--disable-hexagon-idef-parser' '--disable-system' 
+'--enable-linux-user' '--target-list=x86_64-linux-user' '--disable-vhost-user' 
+'--disable-slirp' '--disable-sdl' '--disable-fdt' '--enable-trace-backends=nop' 
+'--disable-tools' '--disable-guest-agent' '--disable-fuse' 
+'--disable-fuse-lseek' '--disable-seccomp' '--disable-libssh' 
+'--disable-libusb' '--disable-vnc' '--disable-nettle' '--disable-numa' 
+'--disable-pipewire' '--disable-spice' '--disable-usb-redir' 
+'--disable-install-blobs'
+
+Emulation of the same x86_64 code with qemu 6.2.0 installed on another x86_64 
+native machine works fine.
+
+[1]
+https://lists.nongnu.org/archive/html/qemu-devel/2023-11/msg05387.html
+Best regards,
+Petr
+
+On Sat, 25 Nov 2023 at 13:09, Petr Cvek <petrcvekcz@gmail.com> wrote:
+>
+>
+It seems there is a bug in SIGALRM handling when 486 system emulates x86_64
+>
+code.
+486 host is pretty well out of support currently. Can you reproduce
+this on a less ancient host CPU type ?
+
+>
+ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion failed:
+>
+(cpu == current_cpu)
+>
+Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup:
+>
+assertion failed: (cpu == current_cpu)
+>
+0x48874a != 0x3c69e10
+>
+**
+>
+ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion failed:
+>
+(cpu == current_cpu)
+>
+Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup:
+>
+assertion failed: (cpu == current_cpu)
+What compiler version do you build QEMU with? That
+assert is there because we have seen some buggy compilers
+in the past which don't correctly preserve the variable
+value as the setjmp/longjmp spec requires them to.
+
+thanks
+-- PMM
+
+Dne 27. 11. 23 v 10:37 Peter Maydell napsal(a):
+>
+On Sat, 25 Nov 2023 at 13:09, Petr Cvek <petrcvekcz@gmail.com> wrote:
+>
+>
+>
+> It seems there is a bug in SIGALRM handling when 486 system emulates x86_64
+>
+> code.
+>
+>
+486 host is pretty well out of support currently. Can you reproduce
+>
+this on a less ancient host CPU type ?
+>
+It seems it only fails when the code is compiled for i486. QEMU built with the 
+same compiler with -march=i586 and above runs on the same physical hardware 
+without a problem. All -march= variants were executed on ryzen 3600.
+
+>
+> ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion
+>
+> failed: (cpu == current_cpu)
+>
+> Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup:
+>
+> assertion failed: (cpu == current_cpu)
+>
+> 0x48874a != 0x3c69e10
+>
+> **
+>
+> ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion
+>
+> failed: (cpu == current_cpu)
+>
+> Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup:
+>
+> assertion failed: (cpu == current_cpu)
+>
+>
+What compiler version do you build QEMU with? That
+>
+assert is there because we have seen some buggy compilers
+>
+in the past which don't correctly preserve the variable
+>
+value as the setjmp/longjmp spec requires them to.
+>
+i486 and i586+ code variants were compiled with GCC 13.2.0 (more exactly, 
+slackware64 current multilib distribution).
+
+i486 binary which runs on the real 486 is also GCC 13.2.0 and installed as a 
+part of the buildroot crosscompiler (about two week old git snapshot).
+
+>
+thanks
+>
+-- PMM
+best regards,
+Petr
+
+On 11/25/23 07:08, Petr Cvek wrote:
+ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion failed: 
+(cpu == current_cpu)
+Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion 
+failed: (cpu == current_cpu)
+#
+
+The code fails either with or without -singlestep, the command line:
+
+/usr/bin/qemu-x86_64 -L /opt/x86_64 -strace -singlestep  /opt/x86_64/alarm.bin
+
+Source code of QEMU 8.1.1 was modified with patch "[PATCH] qemu/timer: Don't use 
+RDTSC on i486" [1],
+with added few ioctls (not relevant) and cpu_exec_longjmp_cleanup() now prints 
+current pointers of
+cpu and current_cpu (line "0x48874a != 0x3c69e10").
+If you try this again with 8.2-rc2, you should not see an assertion failure.
+You should see instead
+
+QEMU internal SIGILL {code=ILLOPC, addr=0x12345678}
+which I think more accurately summarizes the situation of attempting RDTSC on hardware
+that does not support it.
+r~
+
+Dne 29. 11. 23 v 15:25 Richard Henderson napsal(a):
+>
+On 11/25/23 07:08, Petr Cvek wrote:
+>
+> ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup: assertion
+>
+> failed: (cpu == current_cpu)
+>
+> Bail out! ERROR:../accel/tcg/cpu-exec.c:546:cpu_exec_longjmp_cleanup:
+>
+> assertion failed: (cpu == current_cpu)
+>
+> #
+>
+>
+>
+> The code fails either with or without -singlestep, the command line:
+>
+>
+>
+> /usr/bin/qemu-x86_64 -L /opt/x86_64 -strace -singlestepÂ
+>
+> /opt/x86_64/alarm.bin
+>
+>
+>
+> Source code of QEMU 8.1.1 was modified with patch "[PATCH] qemu/timer: Don't
+>
+> use RDTSC on i486" [1],
+>
+> with added few ioctls (not relevant) and cpu_exec_longjmp_cleanup() now
+>
+> prints current pointers of
+>
+> cpu and current_cpu (line "0x48874a != 0x3c69e10").
+>
+>
+>
+If you try this again with 8.2-rc2, you should not see an assertion failure.
+>
+You should see instead
+>
+>
+QEMU internal SIGILL {code=ILLOPC, addr=0x12345678}
+>
+>
+which I think more accurately summarizes the situation of attempting RDTSC on
+>
+hardware that does not support it.
+>
+>
+Compilation of vanilla qemu v8.2.0-rc2 with -march=i486 by GCC 13.2.0 and 
+running the resulting binary on ryzen still leads to:
+
+**
+ERROR:../accel/tcg/cpu-exec.c:533:cpu_exec_longjmp_cleanup: assertion failed: 
+(cpu == current_cpu)
+Bail out! ERROR:../accel/tcg/cpu-exec.c:533:cpu_exec_longjmp_cleanup: assertion 
+failed: (cpu == current_cpu)
+Aborted
+
+>
+>
+r~
+Petr
+
-- 
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