diff options
Diffstat (limited to 'results/classifier/zero-shot/105/KVM/1456804')
| -rw-r--r-- | results/classifier/zero-shot/105/KVM/1456804 | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/results/classifier/zero-shot/105/KVM/1456804 b/results/classifier/zero-shot/105/KVM/1456804 new file mode 100644 index 00000000..5d59ff4b --- /dev/null +++ b/results/classifier/zero-shot/105/KVM/1456804 @@ -0,0 +1,340 @@ +KVM: 0.704 +other: 0.680 +vnc: 0.613 +network: 0.604 +boot: 0.588 +instruction: 0.577 +device: 0.570 +mistranslation: 0.557 +graphic: 0.538 +assembly: 0.474 +semantic: 0.447 +socket: 0.414 + +kvm_irqchip_commit_routes: Assertion `ret == 0' failed. + +During win8.1 boot on qemu.git eba05e922e8e7f307bc5d4104a78797e55124e97, kernel 4.1-rc4, I get the following assert: + +qemu-system-x86_64: /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1033: kvm_irqchip_commit_routes: Assertion `ret == 0' failed. + +Bisected to: + +commit 851c2a75a6e80c8aa5e713864d98cfb512e7229b +Author: Jason Wang <email address hidden> +Date: Thu Apr 23 14:21:47 2015 +0800 + + virtio-pci: speedup MSI-X masking and unmasking + + This patch tries to speed up the MSI-X masking and unmasking through + the mapping between vector and queues. With this patch it will there's + no need to go through all possible virtqueues, which may help to + reduce the time spent when doing MSI-X masking/unmasking a single + vector when more than hundreds or even thousands of virtqueues were + supported. + + Tested with 80 queue pairs virito-net-pci by changing the smp affinity + in the background and doing netperf in the same time: + + Before the patch: + 5711.70 Gbits/sec + After the patch: + 6830.98 Gbits/sec + + About 19.6% improvements in throughput. + + Cc: Michael S. Tsirkin <email address hidden> + Signed-off-by: Jason Wang <email address hidden> + Reviewed-by: Michael S. Tsirkin <email address hidden> + Signed-off-by: Michael S. Tsirkin <email address hidden> + +Backtrace: + +Program received signal SIGABRT, Aborted. +[Switching to Thread 0x7f32fffff700 (LWP 23059)] +0x00007f33187438d7 in raise () from /lib64/libc.so.6 +(gdb) bt +#0 0x00007f33187438d7 in raise () at /lib64/libc.so.6 +#1 0x00007f331874553a in abort () at /lib64/libc.so.6 +#2 0x00007f331873c47d in __assert_fail_base () at /lib64/libc.so.6 +#3 0x00007f331873c532 in () at /lib64/libc.so.6 +#4 0x000055e0252fed5b in kvm_irqchip_commit_routes (s=0x55e027ce17e0) + at /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1033 +#5 0x000055e0252fef46 in kvm_update_routing_entry (s=0x55e027ce17e0, new_entry=0x7f32ffffe4a0) at /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1078 +#6 0x000055e0252ff78e in kvm_irqchip_update_msi_route (s=0x55e027ce17e0, virq=0, msg=...) at /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1282 +#7 0x000055e0255899a0 in virtio_pci_vq_vector_unmask (proxy=0x55e02a0ee580, queue_no=2, vector=2, msg=...) at hw/virtio/virtio-pci.c:588 +#8 0x000055e025589b76 in virtio_pci_vector_unmask (dev=0x55e02a0ee580, vector=2, msg=...) at hw/virtio/virtio-pci.c:641 +#9 0x000055e0255186f0 in msix_set_notifier_for_vector (dev=0x55e02a0ee580, vector=2) at hw/pci/msix.c:513 +#10 0x000055e0255187ee in msix_set_vector_notifiers (dev=0x55e02a0ee580, use_notifier=0x55e025589ad2 <virtio_pci_vector_unmask>, release_notifier=0x55e025589c0c <virtio_pci_vector_mask>, poll_notifier=0x55e025589cb1 <virtio_pci_vector_poll>) at hw/pci/msix.c:540 +#11 0x000055e02558a1f0 in virtio_pci_set_guest_notifiers (d=0x55e02a0ee580, nvqs=2, assign=true) at hw/virtio/virtio-pci.c:794 +#12 0x000055e02533c2bc in vhost_net_start (dev=0x55e02a0eef90, ncs=0x55e02a866ac0, total_queues=1) + at /net/gimli/home/alwillia/Work/qemu.git/hw/net/vhost_net.c:318 +#13 0x000055e025336dce in virtio_net_vhost_status (n=0x55e02a0eef90, status=7 '\a') at /net/gimli/home/alwillia/Work/qemu.git/hw/net/virtio-net.c:146 +#14 0x000055e025336e78 in virtio_net_set_status (vdev=0x55e02a0eef90, status=7 '\a') at /net/gimli/home/alwillia/Work/qemu.git/hw/net/virtio-net.c:165 +#15 0x000055e0253504c6 in virtio_set_status (vdev=0x55e02a0eef90, val=7 '\a') + at /net/gimli/home/alwillia/Work/qemu.git/hw/virtio/virtio.c:551 +#16 0x000055e025588d6d in virtio_ioport_write (opaque=0x55e02a0ee580, addr=18, val=7) at hw/virtio/virtio-pci.c:259 +#17 0x000055e0255891d1 in virtio_pci_config_write (opaque=0x55e02a0ee580, addr=18, val=7, size=1) at hw/virtio/virtio-pci.c:385 +#18 0x000055e025303155 in memory_region_write_accessor (mr=0x55e02a0eee00, addr=18, value=0x7f32ffffe908, size=1, shift=0, mask=255, attrs=...) + at /net/gimli/home/alwillia/Work/qemu.git/memory.c:457 +#19 0x000055e025303308 in access_with_adjusted_size (addr=18, value=0x7f32ffffe908, size=1, access_size_min=1, access_size_max=4, access= + 0x55e0253030d0 <memory_region_write_accessor>, mr=0x55e02a0eee00, attrs=...) at /net/gimli/home/alwillia/Work/qemu.git/memory.c:516 +#20 0x000055e025305b15 in memory_region_dispatch_write (mr=0x55e02a0eee00, addr=18, data=7, size=1, attrs=...) + at /net/gimli/home/alwillia/Work/qemu.git/memory.c:1166 +#21 0x000055e0252b68eb in address_space_rw (as=0x55e025b71a80 <address_space_io>, addr=49458, attrs=..., buf=0x7f3322f48000 "\a", len=1, is_write=true) + at /net/gimli/home/alwillia/Work/qemu.git/exec.c:2363 +#22 0x000055e02530041e in kvm_handle_io (port=49458, attrs=..., data=0x7f3322f48000, direction=1, size=1, count=1) + at /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1679 +#23 0x000055e025300914 in kvm_cpu_exec (cpu=0x55e02a1383a0) +---Type <return> to continue, or q <return> to quit--- + at /net/gimli/home/alwillia/Work/qemu.git/kvm-all.c:1839 +#24 0x000055e0252e8062 in qemu_kvm_cpu_thread_fn (arg=0x55e02a1383a0) + at /net/gimli/home/alwillia/Work/qemu.git/cpus.c:947 +#25 0x00007f3321b2352a in start_thread () at /lib64/libpthread.so.0 +#26 0x00007f331880f22d in clone () at /lib64/libc.so.6 + +VM XML (-snapshot added only for bisect): + +<domain type='kvm' id='8' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> + <name>Steam</name> + <uuid>79f39860-d659-426b-89e8-90cb46ee57c6</uuid> + <memory unit='KiB'>4194304</memory> + <currentMemory unit='KiB'>4194304</currentMemory> + <memoryBacking> + <hugepages/> + </memoryBacking> + <vcpu placement='static'>4</vcpu> + <cputune> + <vcpupin vcpu='0' cpuset='0'/> + <vcpupin vcpu='1' cpuset='1'/> + <vcpupin vcpu='2' cpuset='2'/> + <vcpupin vcpu='3' cpuset='3'/> + </cputune> + <resource> + <partition>/machine</partition> + </resource> + <os> + <type arch='x86_64' machine='pc-i440fx-2.3'>hvm</type> + <loader readonly='yes' type='pflash'>/usr/share/edk2.git/ovmf-x64/OVMF_CODE-pure-efi.fd</loader> + <nvram template='/usr/share/edk2.git/ovmf-x64/OVMF_VARS-pure-efi.fd'>/var/lib/libvirt/qemu/nvram/Steam_VARS.fd</nvram> + </os> + <features> + <acpi/> + <apic/> + <pae/> + <kvm> + <hidden state='on'/> + </kvm> + </features> + <cpu mode='host-passthrough'> + <topology sockets='1' cores='4' threads='1'/> + </cpu> + <clock offset='localtime'> + <timer name='rtc' tickpolicy='catchup'/> + <timer name='pit' tickpolicy='delay'/> + <timer name='hpet' present='no'/> + </clock> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>restart</on_crash> + <devices> + <emulator>/usr/local/bin/qemu-system-x86_64</emulator> + <disk type='file' device='disk'> + <driver name='qemu' type='qcow2' cache='none' io='native'/> + <source file='/mnt/store/vm/Steam.qcow2'/> + <backingStore type='file' index='1'> + <format type='raw'/> + <source file='/mnt/store/vm/Steam.img'/> + <backingStore/> + </backingStore> + <target dev='sda' bus='scsi'/> + <boot order='2'/> + <alias name='scsi0-0-0-0'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='scsi' index='0' model='virtio-scsi'> + <alias name='scsi0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </controller> + <controller type='usb' index='0' model='ich9-ehci1'> + <alias name='usb0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x7'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci1'> + <alias name='usb0'/> + <master startport='0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0' multifunction='on'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci2'> + <alias name='usb0'/> + <master startport='2'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x1'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci3'> + <alias name='usb0'/> + <master startport='4'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x2'/> + </controller> + <controller type='pci' index='0' model='pci-root'> + <alias name='pci.0'/> + </controller> + <interface type='bridge'> + <mac address='52:54:00:60:ef:ac'/> + <source bridge='br0'/> + <target dev='vnet0'/> + <model type='virtio'/> + <alias name='net0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </interface> + <hostdev mode='subsystem' type='pci' managed='yes'> + <driver name='vfio'/> + <source> + <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> + </source> + <alias name='hostdev0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </hostdev> + <hostdev mode='subsystem' type='pci' managed='yes'> + <driver name='vfio'/> + <source> + <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/> + </source> + <alias name='hostdev1'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + </hostdev> + <memballoon model='none'> + <alias name='balloon0'/> + </memballoon> + </devices> + <qemu:commandline> + <qemu:arg value='-snapshot'/> + </qemu:commandline> +</domain> + +From the trace, looks like the driver is trying to assign config vq (2) an vector(2). This is interesting. + +I try to reproduce but fail. (The only difference is my guest does not have any vfio and ovmf was not used). + +Can you reproduce it without ovmf and vfio? + +Thanks + +The bug is unaffected, it still occurs, by removing the vfio devices from the config and replacing them with a standard spice/qxl graphics setup. I'm unable to reproduce the issue so far using a seabios-based win8.1 install. + +Correction, I was using the stock distro qemu-kvm. Yes, the problem occurs on a stock seabios win8.1 VM without vfio: + +<domain type='kvm'> + <name>win8.1</name> + <uuid>896cb319-c196-4b92-a7e2-2306b0eac769</uuid> + <memory unit='KiB'>4194304</memory> + <currentMemory unit='KiB'>4194304</currentMemory> + <vcpu placement='static'>2</vcpu> + <os> + <type arch='x86_64' machine='pc-i440fx-2.3'>hvm</type> + </os> + <features> + <acpi/> + <apic/> + <pae/> + <hyperv> + <relaxed state='on'/> + <vapic state='on'/> + <spinlocks state='on' retries='8191'/> + </hyperv> + </features> + <cpu mode='custom' match='exact'> + <model fallback='allow'>SandyBridge</model> + </cpu> + <clock offset='localtime'> + <timer name='rtc' tickpolicy='catchup'/> + <timer name='pit' tickpolicy='delay'/> + <timer name='hpet' present='no'/> + <timer name='hypervclock' present='yes'/> + </clock> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>restart</on_crash> + <pm> + <suspend-to-mem enabled='no'/> + <suspend-to-disk enabled='no'/> + </pm> + <devices> + <emulator>/usr/local/bin/qemu-system-x86_64</emulator> + <disk type='file' device='disk'> + <driver name='qemu' type='qcow2'/> + <source file='/mnt/store/vm/win8.1-seabios'/> + <target dev='sda' bus='scsi'/> + <boot order='2'/> + <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='0x06' function='0x7'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci1'> + <master startport='0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0' multifunction='on'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci2'> + <master startport='2'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x1'/> + </controller> + <controller type='usb' index='0' model='ich9-uhci3'> + <master startport='4'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x2'/> + </controller> + <controller type='scsi' index='0' model='virtio-scsi'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <interface type='bridge'> + <mac address='52:54:00:c9:7b:49'/> + <source bridge='br0'/> + <model type='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </interface> + <input type='tablet' bus='usb'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <graphics type='spice' autoport='yes'> + <image compression='off'/> + </graphics> + <video> + <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </video> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> + </memballoon> + </devices> +</domain> + + +Using almost the same XML but still could not reproduce this by myself. + +What's the version of guest driver inside? I'm using 12/19/2014 62.70.104.9800? + +I'm using 62.72.104.10300. I started with the old virtio-win-0.1-100 ISO, but I couldn't figure out how to downgrade to the latest "stable" release, so instead I upgraded to the 103 release to see if it fixed anything. It does not. + +Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? + +This appears to address it in QEMU v2.4: + +commit 6652d0811c9463fbfb2d2d1cb2ec03f388145c5f +Author: Jason Wang <email address hidden> +Date: Wed May 27 16:26:07 2015 +0800 + + virtio-pci: don't try to mask or unmask vqs without notifiers + + We should validate the vq index against nvqs_with_notifiers. Otherwise we may + try to mask or unmask vector for vqs without notifiers (e.g control vq). This + will lead qemu abort on kvm_irqchip_commit_routes() when trying to boot win8.1 + guest. + + Fixes 851c2a75a6e80c8aa5e713864d98cfb512e7229b ("virtio-pci: speedup MSI-X + masking and unmasking") + + Reported-by: Alex Williamson <email address hidden> + Signed-off-by: Jason Wang <email address hidden> + Reviewed-by: Michael S. Tsirkin <email address hidden> + Signed-off-by: Michael S. Tsirkin <email address hidden> + + |