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Date: Mon, 02 Jun 2014 22:45:54 +0200
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Subject: Re: [Qemu-devel] qemu 2.0 segfaults in event notifier
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To: Stefan Priebe <s.priebe@profihost.ag>, Stefan Hajnoczi <stefanha@gmail.com>
Cc: "famz@redhat.com" <famz@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, "qemu-stable@nongnu.org" <qemu-stable@nongnu.org>

Il 02/06/2014 21:32, Stefan Priebe ha scritto:
>
> #0  0x00007f69e421c43f in event_notifier_set (e=0x124) at
> util/event_notifier-posix.c:97
> #1  0x00007f69e3e37afc in aio_notify (ctx=0x0) at async.c:246
> #2  0x00007f69e3e37697 in qemu_bh_schedule (bh=0x7f5dac217f60) at
> async.c:128
> #3  0x00007f69e3e8bc44 in rbd_finish_aiocb (c=0x7f5dac0c3f30,
> rcb=0x7f5dafa50610) at block/rbd.c:585
> #4  0x00007f69e17bee44 in librbd::AioCompletion::complete() () from
> /usr/lib/librbd.so.1
> #5  0x00007f69e17be832 in
> librbd::AioCompletion::complete_request(CephContext*, long) () from
> /usr/lib/librbd.so.1
> #6  0x00007f69e1c946ba in Context::complete(int) () from
> /usr/lib/librados.so.2
> #7  0x00007f69e17f1e85 in ObjectCacher::C_WaitForWrite::finish(int) ()
> from /usr/lib/librbd.so.1
> #8  0x00007f69e1c946ba in Context::complete(int) () from
> /usr/lib/librados.so.2
> #9  0x00007f69e1d373c8 in Finisher::finisher_thread_entry() () from
> /usr/lib/librados.so.2
> #10 0x00007f69dbd43b50 in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #11 0x00007f69dba8e13d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> #12 0x0000000000000000 in ?? ()

Can you also print qemu_aio_context?  Also print the backtrace of all 
threads, using "thread apply all bt full".

Paolo