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

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Message-ID: <df072429-3f45-4d9d-c81d-73174aaf2e7d@kernel.dk>
Date:   Tue, 7 Sep 2021 13:30:36 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Hao Sun <sunhao.th@...il.com>, io-uring@...r.kernel.org
Cc:     Pavel Begunkov <asml.silence@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: INFO: task hung in io_uring_cancel_generic

On 9/7/21 5:50 AM, Hao Sun wrote:
> Hello,
> 
> When using Healer to fuzz the latest Linux kernel, the following crash
> was triggered.
> 
> HEAD commit: 7d2a07b76933 Linux 5.14
> git tree: upstream
> console output:
> https://drive.google.com/file/d/1c8uRooM0TwJiTIwEviOCB4RC-hhOgGHR/view?usp=sharing
> kernel config: https://drive.google.com/file/d/1XD9WYDViQLSXN7RGwH8AGGDvP9JvOghx/view?usp=sharing
> Similar report:
> https://groups.google.com/u/1/g/syzkaller-bugs/c/FvdcTiJIGtY/m/PcXkoenUAAAJ
> 
> Sorry, I don't have a reproducer for this crash, hope the symbolized
> report can help.
> If you fix this issue, please add the following tag to the commit:
> Reported-by: Hao Sun <sunhao.th@...il.com>

Would be great with a reproducer for this one, though...

-- 
Jens Axboe