linux-kernel - Re: [syzbot] [reiserfs?] possible deadlock in super

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Message-ID: <00000000000071133306073f06ca@google.com>
Date:   Sun, 08 Oct 2023 19:05:32 -0700
From:   syzbot <syzbot+062317ea1d0a6d5e29e7@...kaller.appspotmail.com>
To:     axboe@...nel.dk, brauner@...nel.org, chao@...nel.org,
        daniel.vetter@...ll.ch, hdanton@...a.com, jack@...e.cz,
        jaegeuk@...nel.org, jinpu.wang@...os.com,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mairacanal@...eup.net, mcanal@...lia.com,
        reiserfs-devel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        terrelln@...com, willy@...radead.org, yukuai3@...wei.com
Subject: Re: [syzbot] [reiserfs?] possible deadlock in super_lock

syzbot has bisected this issue to:

commit 7908632f2927b65f7486ae6b67c24071666ba43f
Author: Maíra Canal <mcanal@...lia.com>
Date:   Thu Sep 14 10:19:02 2023 +0000

    Revert "drm/vkms: Fix race-condition between the hrtimer and the atomic commit"

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17fc0565680000
start commit:   2cf0f7156238 Merge tag 'nfs-for-6.6-2' of git://git.linux-..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14020565680000
console output: https://syzkaller.appspot.com/x/log.txt?x=10020565680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=710dc49bece494df
dashboard link: https://syzkaller.appspot.com/bug?extid=062317ea1d0a6d5e29e7
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=107e9518680000

Reported-by: syzbot+062317ea1d0a6d5e29e7@...kaller.appspotmail.com
Fixes: 7908632f2927 ("Revert "drm/vkms: Fix race-condition between the hrtimer and the atomic commit"")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection