linux-kernel - Re: [syzbot] [f2fs?] WARNING: lock held when returning to user space in f2fs_write_single_data

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Message-ID: <000000000000045d4d06055f5bff@google.com>
Date:   Thu, 14 Sep 2023 22:49:27 -0700
From:   syzbot <syzbot+eb6201248f684e99b9f8@...kaller.appspotmail.com>
To:     chao@...nel.org, hdanton@...a.com, jaegeuk@...nel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        nogikh@...gle.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [f2fs?] WARNING: lock held when returning to user space
 in f2fs_write_single_data_page

syzbot suspects this issue was fixed by commit:

commit 5079e1c0c879311668b77075de3e701869804adf
Author: Chao Yu <chao@...nel.org>
Date:   Fri Jun 2 08:36:05 2023 +0000

    f2fs: avoid dead loop in f2fs_issue_checkpoint()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15aae552680000
start commit:   c8c655c34e33 Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=5eadbf0d3c2ece89
dashboard link: https://syzkaller.appspot.com/bug?extid=eb6201248f684e99b9f8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13130a1c280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13d919f8280000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: f2fs: avoid dead loop in f2fs_issue_checkpoint()

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