Re: [Qemu-discuss] need your help for some crash trouble of qemu-system-x86_64

[Fam Zheng]

On Tue, 12/20 18:29, Zhenhao Zhang wrote:
> hello everyone,

Hi Zhenhao, thanks for the report.

> 
>     I am sorry to trouble you. but, I meet some trouble when using qemu+kvm
> +libvirt.  The qemu-system-x86_64 crash and get some errer info from logs
> :./var/log/libvirt/qemu/instance-000006d3.log, as bellow,
> 
> 2016-05-25 10:28:52.565+0000: starting up libvirt version: 1.2.16, package:
> 1.2.16-2ubuntu11.15.10.4~cloud0, qemu version: 2.3.0 (Debian
> 1:2.3+dfsg-5ubuntu9.2~cloud0)
> LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
> QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -name instance-000006d3 -S
> -machine pc-i440fx-vivid,accel=kvm,usb=off -cpu 
> Haswell-noTSX,+abm,+pdpe1gb,+rdrand,+f16c,+osxsave,+dca,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme
> -m 8192 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid
> 5578b710-3518-44c3-91fe-e2e601f569f0 -smbios type=1,manufacturer=OpenStack
> Foundation,product=OpenStack 
> Nova,version=12.0.2,serial=00000000-0000-0000-0000-0cc47a555870,uuid=5578b710-3518-44c3-91fe-e2e601f569f0,family=Virtual
> Machine -no-user-config -nodefaults -chardev 
> socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-000006d3.monitor,server,nowait
> -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew
> -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -boot
> strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive 
> file=rbd:vms/5578b710-3518-44c3-91fe-e2e601f569f0_disk:id=cinder:key=AQBrR6tWbFwlOhAAmtmc/eQX8/K6OjQugVx+mg==:auth_supported=cephx\;none:mon_host=192.168.200.1\:6789\;192.168.200.2\:6789\;192.168.200.3\:6789,if=none,id=drive-virtio-disk0,format=raw,cache=writeback
> -device 
> virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
> -netdev tap,fd=26,id=hostnet0,vhost=on,vhostfd=28 -device 
> virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:63:24:27,bus=pci.0,addr=0x3
> -chardev 
> file,id=charserial0,path=/var/lib/nova/instances/5578b710-3518-44c3-91fe-e2e601f569f0/console.log
> -device isa-serial,chardev=charserial0,id=serial0 -chardev
> pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device
> usb-tablet,id=input0 -vnc 0.0.0.0:1 -k en-us -device
> cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device
> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on
> char device redirected to /dev/pts/3 (label charserial1)
> *** Error in `/usr/bin/qemu-system-x86_64': double free or corruption (out):
> 0x00007f83bc0cc1d0 ***
> 2016-06-28 22:36:16.361+0000: shutting down
> 
>   not all vms have crashed and the creashed vms  images incloud : centos6.5
> ubuntu14.04 and ubuntu16.04.  Maybe it not caused by the guest images,I
> think.

Yes, a double free or corruption is very likely a bug of QEMU, not the guest.

Can you post a backtrace of the crash?

What operations are being performed when it crashes? Can you reproduce it with
QEMU 2.8.0?

Fam

> 
> *I don't have any idear about this, any tips are grateful.*
> 
> my environment info as:
> 
> *OS: *
> 
>         # uname -a
>         Linux VM154S019059 4.2.0-35-generic #40~14.04.1-Ubuntu SMP Fri Mar
> 18 16:37:35 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
> 
>         # cat /etc/lsb-release
>             DISTRIB_ID=Ubuntu
>             DISTRIB_RELEASE=14.04
>             DISTRIB_CODENAME=trusty
>             DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS"
> 
> *QEMU INFO：*
> 
> dpkg -l|grep qemu
> ii  ipxe-qemu 1.0.0+git-20131111.c3d1e78-2ubuntu1.1 all          PXE boot
> firmware - ROM images for qemu
> ii  qemu-block-extra:amd64 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64
> extra block backend modules for qemu-system and qemu-utils
> ii  qemu-slof 20140630+dfsg-1ubuntu1~14.04          all          Slimline
> Open Firmware -- QEMU PowerPC version
> ii  qemu-system 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU full
> system emulation binaries
> ii  qemu-system-arm 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> full system emulation binaries (arm)
> ii  qemu-system-common 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64
> QEMU full system emulation binaries (common files)
> ii  qemu-system-mips 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> full system emulation binaries (mips)
> ii  qemu-system-misc 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> full system emulation binaries (miscelaneous)
> ii  qemu-system-ppc 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> full system emulation binaries (ppc)
> ii  qemu-system-sparc 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64
> QEMU full system emulation binaries (sparc)
> ii  qemu-system-x86 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> full system emulation binaries (x86)
> ii  qemu-utils 1:2.3+dfsg-5ubuntu9.2~cloud0          amd64        QEMU
> utilities
> *
> *
> 
> *
> *
> 
> *kvm model:*
> 
> # modinfo kvm
> filename: /lib/modules/4.2.0-35-generic/kernel/arch/x86/kvm/kvm.ko
> license:        GPL
> author:         Qumranet
> srcversion:     54A62F24A6A2743053CCCC6
> depends:
> intree:         Y
> vermagic:       4.2.0-35-generic SMP mod_unload modversions
> signer:         Build time autogenerated kernel key
> sig_key: 78:A2:B1:7E:20:A3:96:76:A3:5E:2C:3E:16:0E:70:1F:99:E0:65:9B
> sig_hashalgo:   sha512
> parm:           allow_unsafe_assigned_interrupts:Enable device assignment on
> platforms without interrupt remapping support. (bool)
> parm:           ignore_msrs:bool
> parm:           min_timer_period_us:uint
> parm:           kvmclock_periodic_sync:bool
> parm:           tsc_tolerance_ppm:uint
> parm:           lapic_timer_advance_ns:uint
> parm:           halt_poll_ns:uint
> 
> # modinfo kvm-amd
> filename: /lib/modules/4.2.0-35-generic/kernel/arch/x86/kvm/kvm-amd.ko
> license:        GPL
> author:         Qumranet
> srcversion:     BBB11CD7C18B7875B850EC4
> alias:          cpu:type:x86,ven*fam*mod*:feature:*00C2*
> depends:        kvm
> intree:         Y
> vermagic:       4.2.0-35-generic SMP mod_unload modversions
> signer:         Build time autogenerated kernel key
> sig_key: 78:A2:B1:7E:20:A3:96:76:A3:5E:2C:3E:16:0E:70:1F:99:E0:65:9B
> sig_hashalgo:   sha512
> parm:           npt:int
> parm:           nested:int
> 
> *libvirt*
> 
>        # libvirtd --version
>        libvirtd (libvirt) 1.2.16
> 
> Best Regards,
> 
> Zhang Zhenhao
> 
>