Pavel Begunkov [off-list ref] 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:

quoted

On 9/7/21 5:50 AM, Hao Sun wrote:

quoted

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 <redacted>

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