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Re: [PATCH v4 0/3] Fix some AIO context locking in jobs
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From: |
John Snow |
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Subject: |
Re: [PATCH v4 0/3] Fix some AIO context locking in jobs |
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Date: |
Mon, 6 Apr 2020 16:11:26 -0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 |
On 4/2/20 8:48 AM, Kevin Wolf wrote:
> Am 01.04.2020 um 10:15 hat Stefan Reiter geschrieben:
>> Contains three seperate but related patches cleaning up and fixing some
>> issues regarding aio_context_acquire/aio_context_release for jobs. Mostly
>> affects blockjobs running for devices that have IO threads enabled AFAICT.
>>
>> This is based on the discussions here:
>> https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg07929.html
>
> I'm getting segfaults in some qemu-iotests cases:
>
> Failures: 155 219 245 255 257 258
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> This is the backtrace of one of the coredumps I got, looks like use
> after free:
>
fwiw, this appears to be the case after the very first patch, all six tests.
--js