[syzbot] [f2fs?] WARNING: lock held when returning to user space in f2fs_write_single_data_page

[syzbot] [f2fs?] WARNING: lock held when returning to user space in f2fs_write_single_data_page

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    58390c8ce1bd Merge tag 'iommu-updates-v6.4' of git://git.k..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=136e6ef8280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5eadbf0d3c2ece89
dashboard link: https://syzkaller.appspot.com/bug?extid=eb6201248f684e99b9f8
compiler:       Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16bbb03c280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=140d36f8280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/60130779f509/disk-58390c8c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d7f0cdd29b71/vmlinux-58390c8c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/de415ad52ae4/bzImage-58390c8c.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/dc89d01cd6e9/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+eb6201248f684e99b9f8@syzkaller.appspotmail.com

syz-executor768: attempt to access beyond end of device
loop0: rw=2049, sector=77824, nr_sectors = 2048 limit=63271
syz-executor768: attempt to access beyond end of device
loop0: rw=2049, sector=79872, nr_sectors = 2048 limit=63271
================================================
WARNING: lock held when returning to user space!
6.3.0-syzkaller-12049-g58390c8ce1bd #0 Not tainted
------------------------------------------------
syz-executor768/4998 is leaving the kernel with locks still held!
1 lock held by syz-executor768/4998:
 #0: ffff88807e800448 (&sbi->node_write){++++}-{3:3}, at: f2fs_down_read fs/f2fs/f2fs.h:2087 [inline]
 #0: ffff88807e800448 (&sbi->node_write){++++}-{3:3}, at: f2fs_write_single_data_page+0xa10/0x1d50 fs/f2fs/data.c:2842


---
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Re: [syzbot] [f2fs?] WARNING: lock held when returning to user space in f2fs_write_single_data_page

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 5079e1c0c879311668b77075de3e701869804adf
Author: Chao Yu <chao@kernel.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