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

[Peter Lieven]

On 28.02.2012 09:37, Corentin Chary wrote:
> On Mon, Feb 13, 2012 at 10:24 AM, Peter Lieven<address@hidden>  wrote:
> > Am 11.02.2012 um 09:55 schrieb 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,
> > Hi Corentin,
> >
> > thanks for rebasing those patches. I remember that I have seen them the
> > last time I noticed (about 1 year ago) that the threaded VNC is crashing.
> > I'm on vacation this week, but I will test them next week
> > and let you know if I can force a crash with them applied. If not we should
> > consider to include them asap.
> Hi Peter, any news on that ?
sorry, i had much trouble debugging nasty slow windows vm problems last 
2 weeks.
but its still on my list. i'll keep you all posted.

peter

>