linux-kernel - Re: [syzbot] [block?] possible deadlock in blk_mq_submit

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Message-ID: <CAFj5m9JTrOdETvLY=pO=6oXC6NXPumAPa82281qra0sfakjr=g@mail.gmail.com>
Date: Wed, 27 Nov 2024 13:59:15 +0800
From: Ming Lei <ming.lei@...hat.com>
To: syzbot <syzbot+5218c85078236fc46227@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] possible deadlock in blk_mq_submit_bio

On Sat, Nov 23, 2024 at 11:37 PM syzbot
<syzbot+5218c85078236fc46227@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    06afb0f36106 Merge tag 'trace-v6.13' of git://git.kernel.o..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=148bfec0580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=b011a14ee4cb9480
> dashboard link: https://syzkaller.appspot.com/bug?extid=5218c85078236fc46227
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> userspace arch: i386
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> Downloadable assets:
> disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-06afb0f3.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/aae0561fd279/vmlinux-06afb0f3.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/faa3af3fa7ce/bzImage-06afb0f3.xz
...

> If the report is already addressed, let syzbot know by replying with:
> #syz fix: exact-commit-title
>
> If you want to overwrite report's subsystems, reply with:
> #syz set subsystems: new-subsystem
> (See the list of subsystem names on the web dashboard)
>
> If the report is a duplicate of another one, reply with:
> #syz dup: exact-subject-of-another-report

#syz test: https://github.com/ming1/linux v6.13/block-fix