Re: [regression] Bug 216932 - io_uring with libvirt cause kernel NULL pointer dereference since 6.1.5

["Linux kernel regression tracking (#update)" <regressions@leemhuis.info>]

On 16.01.23 14:42, Jens Axboe wrote:
> On 1/16/23 6:17?AM, Linux kernel regression tracking (Thorsten Leemhuis) wrote:
>> Hi, this is your Linux kernel regression tracker.
>>
>> I noticed a regression report in bugzilla.kernel.org. As many (most?)
>> kernel developer don't keep an eye on it, I decided to forward it by
>> mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=216932 :
> 
> Looks like:
> 
> commit 6d47e0f6a535701134d950db65eb8fe1edf0b575
> Author: Jens Axboe <axboe@kernel.dk>
> Date:   Wed Jan 4 08:52:06 2023 -0700
> 
>     block: don't allow splitting of a REQ_NOWAIT bio
> 
> got picked up by stable, but not the required prep patch:
> 
> 
> commit 613b14884b8595e20b9fac4126bf627313827fbe
> Author: Jens Axboe <axboe@kernel.dk>
> Date:   Wed Jan 4 08:51:19 2023 -0700
> 
>     block: handle bio_split_to_limits() NULL return
> 
> Greg/team, can you pick the latter too? It'll pick cleanly for
> 6.1-stable, not sure how far back the other patch has gone yet.

Jens, many thx for looking so quickly into this!

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
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#regzbot fix: block: handle bio_split_to_limits() NULL return
#regzbot ignore-activity