syzbot


WARNING in dqput (2)

Status: moderation: reported on 2025/05/22 15:23
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+c3631a8736b082513c0a@syzkaller.appspotmail.com
First crash: 52d, last: 4d12h
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in dqput ocfs2 -1 syz inconclusive done 6 178d 190d 0/29 auto-obsoleted due to no activity on 2025/04/23 02:22

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7681 at fs/quota/dquot.c:880 dqput+0x35e/0x490 fs/quota/dquot.c:880
Modules linked in:
CPU: 1 UID: 0 PID: 7681 Comm: kworker/1:7 Not tainted 6.16.0-rc4-syzkaller-00319-g05df91921da6 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events qsync_work_fn
RIP: 0010:dqput+0x35e/0x490 fs/quota/dquot.c:880
Code: 83 6c ff eb 05 e8 22 83 6c ff 48 c7 c7 40 69 e1 8d 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 d8 d9 16 09 e8 03 83 6c ff 90 <0f> 0b 90 e9 70 fe ff ff 48 c7 c1 4c f0 a0 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc900045ff9b0 EFLAGS: 00010293
RAX: ffffffff8253da7d RBX: ffff88805686cb10 RCX: ffff88802a8e5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffff88805686cb13 R09: 1ffff1100ad0d962
R10: dffffc0000000000 R11: ffffed100ad0d963 R12: 1ffff1100ad0d962
R13: 1ffff1100ad0d944 R14: ffff88805686ca00 R15: ffff88805686ca20
FS:  0000000000000000(0000) GS:ffff888125d50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002780 CR3: 0000000075d2c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dquot_scan_active+0x228/0x260 fs/quota/dquot.c:663
 qsync_work_fn+0xab/0x150 fs/ocfs2/quota_global.c:658
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/05 22:39 upstream 05df91921da6 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dqput
2025/05/20 21:09 upstream a5806cd506af b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dqput
2025/05/18 15:17 upstream 5723cc3450bc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dqput
* Struck through repros no longer work on HEAD.