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Subject: Re: [Qemu-devel] Re: audio segfault in qemu-kvm-0.11.0
From: Mark McLoughlin <markmc@redhat.com>
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Date: Fri, 23 Oct 2009 14:50:31 +0100
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To: malc <av1474@comtv.ru>
Cc: qemu-devel <qemu-devel@nongnu.org>, "Justin M. Forbes" <jforbes@redhat.com>, Gene Czarcinski <gene@czarc.net>

On Fri, 2009-10-23 at 17:41 +0400, malc wrote:
> On Fri, 23 Oct 2009, malc wrote:
> 
> > On Fri, 23 Oct 2009, Mark McLoughlin wrote:
> > 
> > > Hi,
> > > 
> > > Any ideas on this segfault a Fedora 12 user (Gene, cc-ed) is seeing?
> 
> [..snip..]
> 
> > 
> > Summary: No idea.
> > 
> 
> FWIW, there's no information whatosever about what audio hardware was
> built and enabled, what sound system was used on the host/guest the
> report is devoid of any useful information (given the state of the
> backtrace)

That's fine, we'd only be delighted to provide some more info.

Our tree is at http://repo.or.cz/w/qemu-kvm/fedora.git

It's based off the stable-0.11 branch

Code is:

        if (played) {
            hw->ts_helper += played;
            audio_capture_mix_and_clear (hw, prev_rpos, played);
        }

If it would help you, I could ask Gene to reproduce with a -O0 build

Built with --audio-drv-list=pa,sdl,alsa,oss

Command line was:

  QEMU_AUDIO_DRV=none qemu-kvm ... -soundhw es1370

Not a lot of info on exactly what the guest is doing with sound, only
that they are Fedora 11 or Fedora 12 guests

Thanks,
Mark.