Re: [Qemu-devel] qemu-kvm-1.0 crashes with threaded vnc server?

[Corentin Chary]

On Thu, Feb 9, 2012 at 7:08 PM, Peter Lieven <address@hidden> wrote:
> Hi,
>
> is anyone aware if there are still problems when enabling the threaded vnc
> server?
> I saw some VMs crashing when using a qemu-kvm build with
> --enable-vnc-thread.
>
> qemu-kvm-1.0[22646]: segfault at 0 ip 00007fec1ca7ea0b sp 00007fec19d056d0
> error 6 in libz.so.1.2.3.3[7fec1ca75000+16000]
> qemu-kvm-1.0[26056]: segfault at 7f06d8d6e010 ip 00007f06e0a30d71 sp
> 00007f06df035748 error 6 in libc-2.11.1.so[7f06e09aa000+17a000]
>
> I had no time to debug further. It seems to happen shortly after migrating,
> but thats uncertain. At least the segfault in libz seems to
> give a hint to VNC since I cannot image of any other part of qemu-kvm using
> libz except for VNC server.
>
> Thanks,
> Peter
>
>

Hi Peter,
I found two patches on my git tree that I sent long ago but somehow
get lost on the mailing list. I rebased the tree but did not have the
time (yet) to test them.
http://git.iksaif.net/?p=qemu.git;a=shortlog;h=refs/heads/wip
Feel free to try them. If QEMU segfault again, please send a full gdb
backtrace / valgrind trace / way to reproduce :).
Thanks,


-- 
Corentin Chary
http://xf.iksaif.net