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[Qemu-devel] [Bug 943186] Re: kvm segfault after livemigration with tabl
From: |
Alexandre Derumier |
Subject: |
[Qemu-devel] [Bug 943186] Re: kvm segfault after livemigration with tablet |
Date: |
Wed, 29 Feb 2012 11:48:38 -0000 |
forget the command line
/usr/bin/kvm -chardev socket,id=monitor,path=/var/run/qemu-
server/10345.mon,server,nowait -mon chardev=monitor,mode=readline -vnc
unix:/var/run/qemu-server/10345.vnc,x509,password -pidfile /var/run
/qemu-server/10345.pid -daemonize -usb -device usb-
tablet,bus=usb.0,port=1,id=tablet -name test -smp sockets=4,cores=1
-nodefaults -boot menu=on -vga cirrus -k fr -drive file=/dev/disk/by-id
/scsi-3600144f0f62f0e0000004f16cdb8007e,if=none,id=drive-
virtio1,cache=none,aio=native -device virtio-blk-pci,drive=drive-
virtio1,id=virtio1,bus=pci.0,addr=0xb
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https://bugs.launchpad.net/bugs/943186
Title:
kvm segfault after livemigration with tablet
Status in QEMU:
New
Bug description:
Hi,
i'm working on proxmox 2 distribution,
we are using qemu-kvm-git.
Users reports kvm segfault with some system guest,
after live migration with usb tablet.
original thread:
http://forum.proxmox.com/threads/8455-2-0RC1-Live-Migration-VM-Crashes-after-a-few-minutes
Guests with the bug:
Fedora 16, 64 Bit. with latest updates installed. Tried VirtIO and IDE
Centos 6.2 64 Bit
OpenSUSE 12.1, 64-Bit
Guest without bugs:
Windows 7 Professional, 32 Bit
Windows 7 Professional, 64 Bit
Windows 2008 X64
Ubuntu 10.04, 64 Bit
Debian squeeze 64bit
How to reproduce : (100%)
- Start a vm
- Migrate it on a target host
- Open Vnc console.
(Guest works fine, we can connect with ssh, and we can use keyboard in vnc)
- Move the mouse in vnc -> CRASH
Workaround:
Disabling tablet resolve the problem
Our qemu-kvm configure:
./configure --prefix=/usr --datadir=/usr/share/kvm
--docdir=/usr/share/doc/pve-qemu-kvm --sysconfdir=/etc --disable-xen
--enable-vnc-tls --enable-sdl --enable-uuid --enable-linux-aio
I had tried to debug with gdb (with ./configure --enable-debug),
but I didn't have symbols for the backtrace.
(maybe does it neep to compile external libs with debug too ? I'm not an
expert, so please help ;)
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