linux-kernel - Re: INFO: task hung in io_ring_exit

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Message-ID: <5ff2b3c0-eb96-c423-dcee-1bdf6604e9df@kernel.dk>
Date:   Wed, 1 Mar 2023 07:53:57 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Sanan Hasanov <sanan.hasanov@...ghts.ucf.edu>,
        "asml.silence@...il.com" <asml.silence@...il.com>,
        "io-uring@...r.kernel.org" <io-uring@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     "syzkaller@...glegroups.com" <syzkaller@...glegroups.com>,
        "contact@...zz.com" <contact@...zz.com>
Subject: Re: INFO: task hung in io_ring_exit_work

On 2/26/23 11:23 PM, Sanan Hasanov wrote:
> Good day, dear maintainers,
> 
> We found a bug using a modified kernel configuration file used by syzbot.
> 
> We enhanced the coverage of the configuration file using our tool, klocalizer.
> 
> Kernel Branch: 6.2.0-next-20230225
> Kernel config: https://drive.google.com/file/d/1NS9N8rvftQ7BouImn2OVnC96qrNhAeuO/view?usp=share_link
> C Reproducer: Unfortunately, there is no reproducer for this bug yet.

Not sure what we're supposed to do with this, without a syzbot or
c reproducer? You can get into this condition if you SIGSTOP the
task so it can't complete its task_work, for example. But impossible
to glean anything from this report.

-- 
Jens Axboe