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From: Hao Sun <sunhao.th@gmail.com>
To: Pavel Begunkov <asml.silence@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>,
	io-uring@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: INFO: task hung in io_uring_cancel_generic
Date: Wed, 8 Sep 2021 09:01:59 +0800	[thread overview]
Message-ID: <CACkBjsZLyNbMwyoZc8T9ggq+R6-0aBFPCRB54jzAOF8f2QCH0Q@mail.gmail.com> (raw)
In-Reply-To: <e5ac817b-bc96-bea6-aadb-89d3c201446d@gmail.com>

Pavel Begunkov <asml.silence@gmail.com> 于2021年9月8日周三 上午5:31写道:
>
> On 9/7/21 8:30 PM, Jens Axboe wrote:
> > 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@gmail.com>
> >
> > Would be great with a reproducer for this one, though...
>
> And syzbot usually sends an execution log with all syz programs
> it run, which may be helpful. Any chance you have anything similar
> left?
>

Yes, found it[1]. Here is an execution history with latest 1024
executed progs before crash saved.
Hope it can help. I'll also follow this crash closely, see if Healer
can find a reproducer and send it to you once it found.

[1] https://drive.google.com/file/d/14k8qOFeyKPD4HsqOpIjud3b9jsxFSo-u/view?usp=sharing

> --
> Pavel Begunkov

  reply	other threads:[~2021-09-08  1:02 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 11:50 Hao Sun
2021-09-07 19:30 ` Jens Axboe
2021-09-07 21:31   ` Pavel Begunkov
2021-09-08  1:01     ` Hao Sun [this message]
2021-09-08  6:57       ` Hao Sun
2021-09-08 20:16         ` Pavel Begunkov
2021-09-13  2:26           ` Hao Sun
2021-09-13  2:50             ` Jens Axboe
2021-09-13  3:21               ` Hao Sun
2021-09-13  8:30             ` Pavel Begunkov
2021-09-14  3:01               ` Hao Sun

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