Re: [syzbot] inconsistent lock state in io_poll_remove_all

From: Jens Axboe
Date: Fri Nov 26 2021 - 10:46:31 EST


On 11/26/21 2:27 AM, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: a4849f6000e2 Merge tag 'drm-fixes-2021-11-26' of git://ano..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=11162e9ab00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=bf85c53718a1e697
> dashboard link: https://syzkaller.appspot.com/bug?extid=51ce8887cdef77c9ac83
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+51ce8887cdef77c9ac83@xxxxxxxxxxxxxxxxxxxxxxxxx

#syz fix io_uring: fix link traversal locking

--
Jens Axboe