add new classifier result

1 files changed, 696 insertions, 0 deletions

diff --git a/results/classifier/105/other/1842038 b/results/classifier/105/other/1842038
new file mode 100644
index 00000000..4e5f4a10
--- /dev/null
+++ b/results/classifier/105/other/1842038
@@ -0,0 +1,696 @@
+other: 0.949
+mistranslation: 0.947
+semantic: 0.940
+graphic: 0.940
+network: 0.940
+socket: 0.939
+device: 0.938
+assembly: 0.938
+instruction: 0.938
+vnc: 0.934
+KVM: 0.931
+boot: 0.927
+
+qemu 4.0/4.1 segfault on live migrate with virtio-scsi iothread
+
+[root@kvm-nvme5 qemu]# uname -a
+Linux kvm-nvme5 4.14.35-1902.4.8.el7uek.x86_64 #2 SMP Sun Aug 4 22:25:18 GMT 2019 x86_64 x86_64 x86_64 GNU/Linux
+
+[root@kvm-nvme5 qemu]# qemu-system-x86_64 --version
+QEMU emulator version 4.1.0 (qemu-4.1.0-1.el7)
+Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
+
+[root@kvm-nvme5 qemu]# libvirtd --version
+libvirtd (libvirt) 5.6.0
+
+when migrate 
+MIGR_OPTS="--live --copy-storage-all --verbose --persistent --undefinesource"
+virsh migrate $MIGR_OPTS p12345 qemu+ssh://$SERV/system
+
+we got segfault if we have option <driver iothread='1'/> in config for virtio-scsi controller
+
+[1205674.818067] qemu-system-x86[39744]: segfault at 38 ip 00005575890ad411 sp 00007ffd3c10a0e0 error 6 in qemu-system-x86_64[5575889ad000+951000]
+
+On 4.0 we have error with this context(dont save all output) "qemu_coroutine_get_aio_context(co)' failed"
+
+If we remove option 
+<driver iothread='1'/>
+migrate work fine without segfaults
+
+2019-08-30 08:25:35.402+0000: starting up libvirt version: 5.6.0, package: 1.el7 (Unknown, 2019-08-06-09:57:56, mock), qemu version: 4.1.0qemu-4.1.0-1.el7, kernel: 4.14.35-1902.4.8.el7uek.x86_64, hostname: kvm-nvme5
+LC_ALL=C \
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin \
+HOME=/var/lib/libvirt/qemu/domain-75-p541999 \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=p541999,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-75-p541999/master-key.aes \
+-machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off \
+-cpu Cascadelake-Server,ss=on,hypervisor=on,tsc-adjust=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,xsaves=on,rdctl-no=on,ibrs-all=on,skip-l1dfl-vmentry=on,mds-no=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1000,hv-vpindex,hv-runtime,hv-synic,hv-stimer,hv-fre
+quencies,hv-reenlightenment,hv-tlbflush \
+-m 2148 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-object iothread,id=iothread1 \
+-uuid ff20ae7f-8cfe-4ec5-bd50-e78f8a167414 \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=44,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc,driftfix=slew \
+-global kvm-pit.lost_tick_policy=delay \
+-no-shutdown \
+-boot menu=on,strict=on \
+-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x5.0x7 \
+-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x5 \
+-device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x5.0x1 \
+-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x5.0x2 \
+-device virtio-scsi-pci,iothread=iothread1,id=scsi0,bus=pcie.0,addr=0x9 \
+-device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x6 \
+-drive file=/dev/vm/p541999,format=raw,if=none,id=drive-scsi0-0-0-0,cache=none,discard=unmap,aio=threads,throttling.bps-write=52428800,throttling.bps-write-max=314572800,throttling.bps-write-max-length=120 \
+-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2,write-cache=on \
+-drive if=none,id=drive-sata0-0-0,readonly=on \
+-device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 \
+-netdev tap,fd=47,id=hostnet0,vhost=on,vhostfd=48 \
+-device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:00:54:19:99,bus=pcie.0,addr=0x3 \
+-chardev pty,id=charserial0 \
+-device isa-serial,chardev=charserial0,id=serial0 \
+-chardev socket,id=charchannel0,fd=49,server,nowait \
+-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
+-vnc 0.0.0.0:6128,password \
+-device cirrus-vga,id=video0,bus=pcie.0,addr=0x1 \
+-device virtio-balloon-pci,id=balloon0,bus=pcie.0,addr=0x8 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
+char device redirected to /dev/pts/5 (label charserial0)
+2019-08-30 08:27:00.539+0000: shutting down, reason=crashed
+
+
+config:
+<domain type='kvm'>
+  <name>p541999</name>
+  <uuid>ff20ae7f-8cfe-4ec5-bd50-e78f8a167414</uuid>
+  <memory unit='KiB'>2199552</memory>
+  <currentMemory unit='KiB'>2199552</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <iothreads>1</iothreads>
+  <resource>
+    <partition>/machine</partition>
+  </resource>
+  <os>
+    <type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
+    <boot dev='cdrom'/>
+    <boot dev='hd'/>
+    <bootmenu enable='yes'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <pae/>
+    <hyperv>
+      <relaxed state='on'/>
+      <vapic state='on'/>
+      <spinlocks state='on' retries='4096'/>
+      <vpindex state='on'/>
+      <runtime state='on'/>
+      <synic state='on'/>
+      <stimer state='on'/>
+      <frequencies state='on'/>
+      <reenlightenment state='on'/>
+      <tlbflush state='on'/>
+    </hyperv>
+    <msrs unknown='ignore'/>
+  </features>
+  <cpu mode='host-model' check='full'>
+    <model fallback='forbid'/>
+  </cpu>
+  <clock offset='utc'>
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='pit' tickpolicy='delay'/>
+    <timer name='hpet' present='yes'/>
+    <timer name='hypervclock' present='yes'/>
+  </clock>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw' cache='none' io='threads' discard='unmap'/>
+      <source dev='/dev/vm/p541999'/>
+      <backingStore/>
+      <target dev='sda' bus='scsi'/>
+      <iotune>
+        <write_bytes_sec>52428800</write_bytes_sec>
+        <write_bytes_sec_max>314572800</write_bytes_sec_max>
+        <write_bytes_sec_max_length>120</write_bytes_sec_max_length>
+      </iotune>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='cdrom'>
+      <driver name='qemu' type='raw'/>
+      <target dev='sdb' bus='sata'/>
+      <readonly/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0' model='ich9-ehci1'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci1'>
+      <master startport='0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci2'>
+      <master startport='2'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci3'>
+      <master startport='4'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
+    </controller>
+    <controller type='virtio-serial' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+    </controller>
+    <controller type='scsi' index='0' model='virtio-scsi'>
+      <driver iothread='1'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
+    </controller>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='sata' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+    </controller>
+    <interface type='bridge'>
+      <mac address='00:00:00:54:19:99'/>
+      <source bridge='br0'/>
+      <bandwidth>
+        <inbound average='12500' peak='12500' burst='1024'/>
+        <outbound average='12500' peak='12500' burst='1024'/>
+      </bandwidth>
+      <model type='virtio'/>
+      <filterref filter='clean-traffic'>
+        <parameter name='CTRL_IP_LEARNING' value='none'/>
+        <parameter name='IP' value='1.2.3.4'/>
+      </filterref>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </interface>
+    <serial type='pty'>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+    <channel type='unix'>
+      <source mode='bind' path='/var/lib/libvirt/qemu/p541999.agent'/>
+      <target type='virtio' name='org.qemu.guest_agent.0'/>
+      <address type='virtio-serial' controller='0' bus='0' port='1'/>
+    </channel>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <graphics type='vnc' port='12028' autoport='no' listen='0.0.0.0' passwd='SUPERPASSWORD'>
+      <listen type='address' address='0.0.0.0'/>
+    </graphics>
+    <video>
+      <model type='cirrus' vram='16384' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+    </video>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
+    </memballoon>
+  </devices>
+  <seclabel type='none' model='none'/>
+</domain>
+
+On Fri, Aug 30, 2019 at 08:44:35AM -0000, Dmitriy wrote:
+> Public bug reported:
+
+Thanks for reporting this.  There have been fixes for virtio-scsi with
+iothreads lately, but QEMU 4.1.0 is fairly recent so it should have most
+of them.
+
+Can you try qemu.git/master?
+
+> 
+> [root@kvm-nvme5 qemu]# uname -a
+> Linux kvm-nvme5 4.14.35-1902.4.8.el7uek.x86_64 #2 SMP Sun Aug 4 22:25:18 GMT 2019 x86_64 x86_64 x86_64 GNU/Linux
+> 
+> [root@kvm-nvme5 qemu]# qemu-system-x86_64 --version
+> QEMU emulator version 4.1.0 (qemu-4.1.0-1.el7)
+> Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
+> 
+> [root@kvm-nvme5 qemu]# libvirtd --version
+> libvirtd (libvirt) 5.6.0
+> 
+> when migrate 
+> MIGR_OPTS="--live --copy-storage-all --verbose --persistent --undefinesource"
+> virsh migrate $MIGR_OPTS p12345 qemu+ssh://$SERV/system
+> 
+> we got segfault if we have option <driver iothread='1'/> in config for
+> virtio-scsi controller
+> 
+> [1205674.818067] qemu-system-x86[39744]: segfault at 38 ip
+> 00005575890ad411 sp 00007ffd3c10a0e0 error 6 in qemu-system-
+> x86_64[5575889ad000+951000]
+> 
+> On 4.0 we have error with this context(dont save all output)
+> "qemu_coroutine_get_aio_context(co)' failed"
+> 
+> If we remove option 
+> <driver iothread='1'/>
+> migrate work fine without segfaults
+> 
+> 2019-08-30 08:25:35.402+0000: starting up libvirt version: 5.6.0, package: 1.el7 (Unknown, 2019-08-06-09:57:56, mock), qemu version: 4.1.0qemu-4.1.0-1.el7, kernel: 4.14.35-1902.4.8.el7uek.x86_64, hostname: kvm-nvme5
+> LC_ALL=C \
+> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin \
+> HOME=/var/lib/libvirt/qemu/domain-75-p541999 \
+> XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.local/share \
+> XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.cache \
+> XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.config \
+> QEMU_AUDIO_DRV=none \
+> /usr/bin/qemu-system-x86_64 \
+> -name guest=p541999,debug-threads=on \
+> -S \
+> -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-75-p541999/master-key.aes \
+> -machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off \
+> -cpu Cascadelake-Server,ss=on,hypervisor=on,tsc-adjust=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,xsaves=on,rdctl-no=on,ibrs-all=on,skip-l1dfl-vmentry=on,mds-no=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1000,hv-vpindex,hv-runtime,hv-synic,hv-stimer,hv-fre
+> quencies,hv-reenlightenment,hv-tlbflush \
+> -m 2148 \
+> -overcommit mem-lock=off \
+> -smp 1,sockets=1,cores=1,threads=1 \
+> -object iothread,id=iothread1 \
+> -uuid ff20ae7f-8cfe-4ec5-bd50-e78f8a167414 \
+> -no-user-config \
+> -nodefaults \
+> -chardev socket,id=charmonitor,fd=44,server,nowait \
+> -mon chardev=charmonitor,id=monitor,mode=control \
+> -rtc base=utc,driftfix=slew \
+> -global kvm-pit.lost_tick_policy=delay \
+> -no-shutdown \
+> -boot menu=on,strict=on \
+> -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x5.0x7 \
+> -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x5 \
+> -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x5.0x1 \
+> -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x5.0x2 \
+> -device virtio-scsi-pci,iothread=iothread1,id=scsi0,bus=pcie.0,addr=0x9 \
+> -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x6 \
+> -drive file=/dev/vm/p541999,format=raw,if=none,id=drive-scsi0-0-0-0,cache=none,discard=unmap,aio=threads,throttling.bps-write=52428800,throttling.bps-write-max=314572800,throttling.bps-write-max-length=120 \
+> -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2,write-cache=on \
+> -drive if=none,id=drive-sata0-0-0,readonly=on \
+> -device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 \
+> -netdev tap,fd=47,id=hostnet0,vhost=on,vhostfd=48 \
+> -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:00:54:19:99,bus=pcie.0,addr=0x3 \
+> -chardev pty,id=charserial0 \
+> -device isa-serial,chardev=charserial0,id=serial0 \
+> -chardev socket,id=charchannel0,fd=49,server,nowait \
+> -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
+> -vnc 0.0.0.0:6128,password \
+> -device cirrus-vga,id=video0,bus=pcie.0,addr=0x1 \
+> -device virtio-balloon-pci,id=balloon0,bus=pcie.0,addr=0x8 \
+> -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+> -msg timestamp=on
+> char device redirected to /dev/pts/5 (label charserial0)
+> 2019-08-30 08:27:00.539+0000: shutting down, reason=crashed
+> 
+> 
+> config:
+> <domain type='kvm'>
+>   <name>p541999</name>
+>   <uuid>ff20ae7f-8cfe-4ec5-bd50-e78f8a167414</uuid>
+>   <memory unit='KiB'>2199552</memory>
+>   <currentMemory unit='KiB'>2199552</currentMemory>
+>   <vcpu placement='static'>1</vcpu>
+>   <iothreads>1</iothreads>
+>   <resource>
+>     <partition>/machine</partition>
+>   </resource>
+>   <os>
+>     <type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
+>     <boot dev='cdrom'/>
+>     <boot dev='hd'/>
+>     <bootmenu enable='yes'/>
+>   </os>
+>   <features>
+>     <acpi/>
+>     <apic/>
+>     <pae/>
+>     <hyperv>
+>       <relaxed state='on'/>
+>       <vapic state='on'/>
+>       <spinlocks state='on' retries='4096'/>
+>       <vpindex state='on'/>
+>       <runtime state='on'/>
+>       <synic state='on'/>
+>       <stimer state='on'/>
+>       <frequencies state='on'/>
+>       <reenlightenment state='on'/>
+>       <tlbflush state='on'/>
+>     </hyperv>
+>     <msrs unknown='ignore'/>
+>   </features>
+>   <cpu mode='host-model' check='full'>
+>     <model fallback='forbid'/>
+>   </cpu>
+>   <clock offset='utc'>
+>     <timer name='rtc' tickpolicy='catchup'/>
+>     <timer name='pit' tickpolicy='delay'/>
+>     <timer name='hpet' present='yes'/>
+>     <timer name='hypervclock' present='yes'/>
+>   </clock>
+>   <on_poweroff>destroy</on_poweroff>
+>   <on_reboot>restart</on_reboot>
+>   <on_crash>restart</on_crash>
+>   <devices>
+>     <emulator>/usr/bin/qemu-system-x86_64</emulator>
+>     <disk type='block' device='disk'>
+>       <driver name='qemu' type='raw' cache='none' io='threads' discard='unmap'/>
+>       <source dev='/dev/vm/p541999'/>
+>       <backingStore/>
+>       <target dev='sda' bus='scsi'/>
+>       <iotune>
+>         <write_bytes_sec>52428800</write_bytes_sec>
+>         <write_bytes_sec_max>314572800</write_bytes_sec_max>
+>         <write_bytes_sec_max_length>120</write_bytes_sec_max_length>
+>       </iotune>
+>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+>     </disk>
+>     <disk type='file' device='cdrom'>
+>       <driver name='qemu' type='raw'/>
+>       <target dev='sdb' bus='sata'/>
+>       <readonly/>
+>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+>     </disk>
+>     <controller type='usb' index='0' model='ich9-ehci1'>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
+>     </controller>
+>     <controller type='usb' index='0' model='ich9-uhci1'>
+>       <master startport='0'/>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
+>     </controller>
+>     <controller type='usb' index='0' model='ich9-uhci2'>
+>       <master startport='2'/>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
+>     </controller>
+>     <controller type='usb' index='0' model='ich9-uhci3'>
+>       <master startport='4'/>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
+>     </controller>
+>     <controller type='virtio-serial' index='0'>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+>     </controller>
+>     <controller type='scsi' index='0' model='virtio-scsi'>
+>       <driver iothread='1'/>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
+>     </controller>
+>     <controller type='pci' index='0' model='pcie-root'/>
+>     <controller type='sata' index='0'>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+>     </controller>
+>     <interface type='bridge'>
+>       <mac address='00:00:00:54:19:99'/>
+>       <source bridge='br0'/>
+>       <bandwidth>
+>         <inbound average='12500' peak='12500' burst='1024'/>
+>         <outbound average='12500' peak='12500' burst='1024'/>
+>       </bandwidth>
+>       <model type='virtio'/>
+>       <filterref filter='clean-traffic'>
+>         <parameter name='CTRL_IP_LEARNING' value='none'/>
+>         <parameter name='IP' value='1.2.3.4'/>
+>       </filterref>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+>     </interface>
+>     <serial type='pty'>
+>       <target type='isa-serial' port='0'>
+>         <model name='isa-serial'/>
+>       </target>
+>     </serial>
+>     <console type='pty'>
+>       <target type='serial' port='0'/>
+>     </console>
+>     <channel type='unix'>
+>       <source mode='bind' path='/var/lib/libvirt/qemu/p541999.agent'/>
+>       <target type='virtio' name='org.qemu.guest_agent.0'/>
+>       <address type='virtio-serial' controller='0' bus='0' port='1'/>
+>     </channel>
+>     <input type='mouse' bus='ps2'/>
+>     <input type='keyboard' bus='ps2'/>
+>     <graphics type='vnc' port='12028' autoport='no' listen='0.0.0.0' passwd='SUPERPASSWORD'>
+>       <listen type='address' address='0.0.0.0'/>
+>     </graphics>
+>     <video>
+>       <model type='cirrus' vram='16384' heads='1' primary='yes'/>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+>     </video>
+>     <memballoon model='virtio'>
+>       <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
+>     </memballoon>
+>   </devices>
+>   <seclabel type='none' model='none'/>
+> </domain>
+> 
+> ** Affects: qemu
+>      Importance: Undecided
+>          Status: New
+> 
+> -- 
+> You received this bug notification because you are a member of qemu-
+> devel-ml, which is subscribed to QEMU.
+> https://bugs.launchpad.net/bugs/1842038
+> 
+> Title:
+>   qemu 4.0/4.1 segfault on live migrate with virtio-scsi iothread
+> 
+> Status in QEMU:
+>   New
+> 
+> Bug description:
+>   [root@kvm-nvme5 qemu]# uname -a
+>   Linux kvm-nvme5 4.14.35-1902.4.8.el7uek.x86_64 #2 SMP Sun Aug 4 22:25:18 GMT 2019 x86_64 x86_64 x86_64 GNU/Linux
+> 
+>   [root@kvm-nvme5 qemu]# qemu-system-x86_64 --version
+>   QEMU emulator version 4.1.0 (qemu-4.1.0-1.el7)
+>   Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
+> 
+>   [root@kvm-nvme5 qemu]# libvirtd --version
+>   libvirtd (libvirt) 5.6.0
+> 
+>   when migrate 
+>   MIGR_OPTS="--live --copy-storage-all --verbose --persistent --undefinesource"
+>   virsh migrate $MIGR_OPTS p12345 qemu+ssh://$SERV/system
+> 
+>   we got segfault if we have option <driver iothread='1'/> in config for
+>   virtio-scsi controller
+> 
+>   [1205674.818067] qemu-system-x86[39744]: segfault at 38 ip
+>   00005575890ad411 sp 00007ffd3c10a0e0 error 6 in qemu-system-
+>   x86_64[5575889ad000+951000]
+> 
+>   On 4.0 we have error with this context(dont save all output)
+>   "qemu_coroutine_get_aio_context(co)' failed"
+> 
+>   If we remove option 
+>   <driver iothread='1'/>
+>   migrate work fine without segfaults
+> 
+>   2019-08-30 08:25:35.402+0000: starting up libvirt version: 5.6.0, package: 1.el7 (Unknown, 2019-08-06-09:57:56, mock), qemu version: 4.1.0qemu-4.1.0-1.el7, kernel: 4.14.35-1902.4.8.el7uek.x86_64, hostname: kvm-nvme5
+>   LC_ALL=C \
+>   PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin \
+>   HOME=/var/lib/libvirt/qemu/domain-75-p541999 \
+>   XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.local/share \
+>   XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.cache \
+>   XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.config \
+>   QEMU_AUDIO_DRV=none \
+>   /usr/bin/qemu-system-x86_64 \
+>   -name guest=p541999,debug-threads=on \
+>   -S \
+>   -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-75-p541999/master-key.aes \
+>   -machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off \
+>   -cpu Cascadelake-Server,ss=on,hypervisor=on,tsc-adjust=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,xsaves=on,rdctl-no=on,ibrs-all=on,skip-l1dfl-vmentry=on,mds-no=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1000,hv-vpindex,hv-runtime,hv-synic,hv-stimer,hv-fre
+>   quencies,hv-reenlightenment,hv-tlbflush \
+>   -m 2148 \
+>   -overcommit mem-lock=off \
+>   -smp 1,sockets=1,cores=1,threads=1 \
+>   -object iothread,id=iothread1 \
+>   -uuid ff20ae7f-8cfe-4ec5-bd50-e78f8a167414 \
+>   -no-user-config \
+>   -nodefaults \
+>   -chardev socket,id=charmonitor,fd=44,server,nowait \
+>   -mon chardev=charmonitor,id=monitor,mode=control \
+>   -rtc base=utc,driftfix=slew \
+>   -global kvm-pit.lost_tick_policy=delay \
+>   -no-shutdown \
+>   -boot menu=on,strict=on \
+>   -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x5.0x7 \
+>   -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x5 \
+>   -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x5.0x1 \
+>   -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x5.0x2 \
+>   -device virtio-scsi-pci,iothread=iothread1,id=scsi0,bus=pcie.0,addr=0x9 \
+>   -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x6 \
+>   -drive file=/dev/vm/p541999,format=raw,if=none,id=drive-scsi0-0-0-0,cache=none,discard=unmap,aio=threads,throttling.bps-write=52428800,throttling.bps-write-max=314572800,throttling.bps-write-max-length=120 \
+>   -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2,write-cache=on \
+>   -drive if=none,id=drive-sata0-0-0,readonly=on \
+>   -device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 \
+>   -netdev tap,fd=47,id=hostnet0,vhost=on,vhostfd=48 \
+>   -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:00:54:19:99,bus=pcie.0,addr=0x3 \
+>   -chardev pty,id=charserial0 \
+>   -device isa-serial,chardev=charserial0,id=serial0 \
+>   -chardev socket,id=charchannel0,fd=49,server,nowait \
+>   -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
+>   -vnc 0.0.0.0:6128,password \
+>   -device cirrus-vga,id=video0,bus=pcie.0,addr=0x1 \
+>   -device virtio-balloon-pci,id=balloon0,bus=pcie.0,addr=0x8 \
+>   -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+>   -msg timestamp=on
+>   char device redirected to /dev/pts/5 (label charserial0)
+>   2019-08-30 08:27:00.539+0000: shutting down, reason=crashed
+> 
+>   
+>   config:
+>   <domain type='kvm'>
+>     <name>p541999</name>
+>     <uuid>ff20ae7f-8cfe-4ec5-bd50-e78f8a167414</uuid>
+>     <memory unit='KiB'>2199552</memory>
+>     <currentMemory unit='KiB'>2199552</currentMemory>
+>     <vcpu placement='static'>1</vcpu>
+>     <iothreads>1</iothreads>
+>     <resource>
+>       <partition>/machine</partition>
+>     </resource>
+>     <os>
+>       <type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
+>       <boot dev='cdrom'/>
+>       <boot dev='hd'/>
+>       <bootmenu enable='yes'/>
+>     </os>
+>     <features>
+>       <acpi/>
+>       <apic/>
+>       <pae/>
+>       <hyperv>
+>         <relaxed state='on'/>
+>         <vapic state='on'/>
+>         <spinlocks state='on' retries='4096'/>
+>         <vpindex state='on'/>
+>         <runtime state='on'/>
+>         <synic state='on'/>
+>         <stimer state='on'/>
+>         <frequencies state='on'/>
+>         <reenlightenment state='on'/>
+>         <tlbflush state='on'/>
+>       </hyperv>
+>       <msrs unknown='ignore'/>
+>     </features>
+>     <cpu mode='host-model' check='full'>
+>       <model fallback='forbid'/>
+>     </cpu>
+>     <clock offset='utc'>
+>       <timer name='rtc' tickpolicy='catchup'/>
+>       <timer name='pit' tickpolicy='delay'/>
+>       <timer name='hpet' present='yes'/>
+>       <timer name='hypervclock' present='yes'/>
+>     </clock>
+>     <on_poweroff>destroy</on_poweroff>
+>     <on_reboot>restart</on_reboot>
+>     <on_crash>restart</on_crash>
+>     <devices>
+>       <emulator>/usr/bin/qemu-system-x86_64</emulator>
+>       <disk type='block' device='disk'>
+>         <driver name='qemu' type='raw' cache='none' io='threads' discard='unmap'/>
+>         <source dev='/dev/vm/p541999'/>
+>         <backingStore/>
+>         <target dev='sda' bus='scsi'/>
+>         <iotune>
+>           <write_bytes_sec>52428800</write_bytes_sec>
+>           <write_bytes_sec_max>314572800</write_bytes_sec_max>
+>           <write_bytes_sec_max_length>120</write_bytes_sec_max_length>
+>         </iotune>
+>         <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+>       </disk>
+>       <disk type='file' device='cdrom'>
+>         <driver name='qemu' type='raw'/>
+>         <target dev='sdb' bus='sata'/>
+>         <readonly/>
+>         <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+>       </disk>
+>       <controller type='usb' index='0' model='ich9-ehci1'>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
+>       </controller>
+>       <controller type='usb' index='0' model='ich9-uhci1'>
+>         <master startport='0'/>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
+>       </controller>
+>       <controller type='usb' index='0' model='ich9-uhci2'>
+>         <master startport='2'/>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
+>       </controller>
+>       <controller type='usb' index='0' model='ich9-uhci3'>
+>         <master startport='4'/>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
+>       </controller>
+>       <controller type='virtio-serial' index='0'>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+>       </controller>
+>       <controller type='scsi' index='0' model='virtio-scsi'>
+>         <driver iothread='1'/>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
+>       </controller>
+>       <controller type='pci' index='0' model='pcie-root'/>
+>       <controller type='sata' index='0'>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+>       </controller>
+>       <interface type='bridge'>
+>         <mac address='00:00:00:54:19:99'/>
+>         <source bridge='br0'/>
+>         <bandwidth>
+>           <inbound average='12500' peak='12500' burst='1024'/>
+>           <outbound average='12500' peak='12500' burst='1024'/>
+>         </bandwidth>
+>         <model type='virtio'/>
+>         <filterref filter='clean-traffic'>
+>           <parameter name='CTRL_IP_LEARNING' value='none'/>
+>           <parameter name='IP' value='1.2.3.4'/>
+>         </filterref>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+>       </interface>
+>       <serial type='pty'>
+>         <target type='isa-serial' port='0'>
+>           <model name='isa-serial'/>
+>         </target>
+>       </serial>
+>       <console type='pty'>
+>         <target type='serial' port='0'/>
+>       </console>
+>       <channel type='unix'>
+>         <source mode='bind' path='/var/lib/libvirt/qemu/p541999.agent'/>
+>         <target type='virtio' name='org.qemu.guest_agent.0'/>
+>         <address type='virtio-serial' controller='0' bus='0' port='1'/>
+>       </channel>
+>       <input type='mouse' bus='ps2'/>
+>       <input type='keyboard' bus='ps2'/>
+>       <graphics type='vnc' port='12028' autoport='no' listen='0.0.0.0' passwd='SUPERPASSWORD'>
+>         <listen type='address' address='0.0.0.0'/>
+>       </graphics>
+>       <video>
+>         <model type='cirrus' vram='16384' heads='1' primary='yes'/>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+>       </video>
+>       <memballoon model='virtio'>
+>         <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
+>       </memballoon>
+>     </devices>
+>     <seclabel type='none' model='none'/>
+>   </domain>
+> 
+> To manage notifications about this bug go to:
+> https://bugs.launchpad.net/qemu/+bug/1842038/+subscriptions
+> 
+
+
+https://lists.gnu.org/archive/html/qemu-block/2019-09/msg00481.html
+fix issue and migration work fine
+