linux-kernel - [syzbot] [f2fs?] INFO: task hung in f2fs_write

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Message-ID: <69738510.050a0220.1ad174.033b.GAE@google.com>
Date: Fri, 23 Jan 2026 06:26:24 -0800
From: syzbot <syzbot+ffb43ecff88cb2a47dd3@...kaller.appspotmail.com>
To: chao@...nel.org, jaegeuk@...nel.org, 
	linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [f2fs?] INFO: task hung in f2fs_write_inode

Hello,

syzbot found the following issue on:

HEAD commit:    59e4d31a0470 Merge branches 'for-next/core' and 'for-next/..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=11b73b9a580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8a8594efdc14f07a
dashboard link: https://syzkaller.appspot.com/bug?extid=ffb43ecff88cb2a47dd3
compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13c8cb9a580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16e88d22580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/746a1d5c4188/disk-59e4d31a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2eefade79f10/vmlinux-59e4d31a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/140624ef24ed/Image-59e4d31a.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/e4b7b1d47128/mount_0.gz
  fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=16b73b9a580000)

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ffb43ecff88cb2a47dd3@...kaller.appspotmail.com

INFO: task kworker/u8:14:4087 blocked for more than 143 seconds.
Call trace:
 f2fs_write_inode+0x3b0/0x68c fs/f2fs/inode.c:826
 kthread+0x5fc/0x75c kernel/kthread.c:463
 #0: ffff0000c1ff2948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
3 locks held by syz-executor142/6594:

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

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#syz test: git://repo/address.git branch-or-commit-hash
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If you want to overwrite report's subsystems, reply with:
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#syz dup: exact-subject-of-another-report

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#syz undup