* [Qemu-devel] Re: segfault in ide_read_dma_cb when resetting guest
[not found] <49BD5C3D.4070103@web.de>
@ 2009-03-16 11:12 ` Avi Kivity
2009-03-16 13:15 ` Avi Kivity
0 siblings, 1 reply; 2+ messages in thread
From: Avi Kivity @ 2009-03-16 11:12 UTC (permalink / raw)
To: Jan Kiszka; +Cc: qemu-devel, kvm-devel
Jan Kiszka wrote:
> Hi,
>
> maybe someone has an immediate idea or can reproduce, I'm currently
> lacking time to debug this: With latest kvm-userspace I'm seeing
> sporadic qemu crashes when hard-resetting a guest that currently does
> some I/O (qcow2 disk in snapshot mode). Below is the backtrace, s is
> null.
>
> So far the issue does not show up with -no-kvm or with upstream qemu
> (also without kvm as upstream's reset in kvm mode is not working yet).
>
>
I think I broke it -- cancellation assumes aiocbs were generated by the
block format driver, but there are now aiocbs that are generated by the
generic code.
The problem is in upstream as well, don't know why you don't see it
there (maybe you're seeing a different problem).
I'll come up with a patch.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Qemu-devel] Re: segfault in ide_read_dma_cb when resetting guest
2009-03-16 11:12 ` [Qemu-devel] Re: segfault in ide_read_dma_cb when resetting guest Avi Kivity
@ 2009-03-16 13:15 ` Avi Kivity
0 siblings, 0 replies; 2+ messages in thread
From: Avi Kivity @ 2009-03-16 13:15 UTC (permalink / raw)
To: Jan Kiszka; +Cc: qemu-devel, kvm-devel
Avi Kivity wrote:
> Jan Kiszka wrote:
>> Hi,
>>
>> maybe someone has an immediate idea or can reproduce, I'm currently
>> lacking time to debug this: With latest kvm-userspace I'm seeing
>> sporadic qemu crashes when hard-resetting a guest that currently does
>> some I/O (qcow2 disk in snapshot mode). Below is the backtrace, s is
>> null.
>>
>> So far the issue does not show up with -no-kvm or with upstream qemu
>> (also without kvm as upstream's reset in kvm mode is not working yet).
>>
>>
>
> I think I broke it -- cancellation assumes aiocbs were generated by
> the block format driver, but there are now aiocbs that are generated
> by the generic code.
>
> The problem is in upstream as well, don't know why you don't see it
> there (maybe you're seeing a different problem).
>
> I'll come up with a patch.
>
Patchset just posted to qemu-devel.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-03-16 11:12 ` [Qemu-devel] Re: segfault in ide_read_dma_cb when resetting guest Avi Kivity
2009-03-16 13:15 ` Avi Kivity
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