Re: [bug report] WARNING: CPU: 3 PID: 175811 at io_uring/io_uring.c:2921 io_ring_exit_work+0x155/0x288

[Changhui Zhong <czhong@redhat.com>]

On Tue, Jun 24, 2025 at 4:03 PM Ming Lei <ming.lei@redhat.com> wrote:
>
> On Tue, Jun 24, 2025 at 01:37:55PM +0800, Changhui Zhong wrote:
> > Hello,
> >
> > the following warnning info was triggered by ubdsrv  generic/004 tests,
> > please help check and let me know if you need any info/test, thanks.
> >
> > repo: https://github.com/torvalds/linux.git
> > branch: master
> > INFO: HEAD of cloned kernel
> > commit 86731a2a651e58953fc949573895f2fa6d456841
> > Author: Linus Torvalds <torvalds@linux-foundation.org>
> > Date:   Sun Jun 22 13:30:08 2025 -0700
> >
> >     Linux 6.16-rc3
> >
> >
> > reproducer:
> > # echo 0 > /proc/sys/kernel/io_uring_disabled
> > # modprobe ublk_drv
> > # for i in {0..30};do make test T=generic; done
>
> Hi Changhui,
>
> Please try the fix for your yesterday's report:
>
> https://lore.kernel.org/linux-block/20250624022049.825370-1-ming.lei@redhat.com/
>
> The same test can survive for hours in my VM with the fix.
>
>
> Thanks,
> Ming
>

Hi，Ming

I ran the test 'make test T=generic' 50 times with your patch V2 and
not hit this issue.

Thanks，