syzbot


WARNING in dqput

Status: upstream: reported syz repro on 2025/01/01 08:23
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+bf75d2e9b63fe9e0c330@syzkaller.appspotmail.com
First crash: 193d, last: 85d
Cause bisection: the cause commit could be any of (bisect log):
  1500e7e0726e Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
  df1ae36a4a0e ext2: Fix kernel-doc warnings
  38663034491d Merge tag 'fsnotify_for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
  
Fix bisection: fixed by (bisect log) :
commit 9be53fe697eccf45e5c37e10ffd399eeca5eb489
Author: Eric Sandeen <sandeen@redhat.com>
Date: Mon Oct 28 14:41:15 2024 +0000

  ocfs2: convert to the new mount API

  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] WARNING in dqput 0 (2) 2025/02/14 19:39
Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/01/27 03:57 1h03m retest repro upstream OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5917 at fs/quota/dquot.c:880 dqput+0x359/0x490 fs/quota/dquot.c:880
Modules linked in:
CPU: 1 UID: 0 PID: 5917 Comm: kworker/1:5 Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events qsync_work_fn
RIP: 0010:dqput+0x359/0x490 fs/quota/dquot.c:880
Code: f7 64 ff eb 05 e8 87 f7 64 ff 48 c7 c7 80 58 61 8e 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 6d ef 90 09 e8 68 f7 64 ff 90 <0f> 0b 90 e9 5b fe ff ff 48 c7 c1 2c b1 19 90 80 e1 07 80 c1 03 38
RSP: 0018:ffffc900034c7af0 EFLAGS: 00010293
RAX: ffffffff823a7c78 RBX: ffff888012996000 RCX: ffff888027405a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 1ffff11002532c04 R08: ffffffff823a79bc R09: 1ffff11002532c22
R10: dffffc0000000000 R11: ffffed1002532c23 R12: 1ffff11002532c22
R13: dffffc0000000000 R14: ffff888012996110 R15: ffff888012996020
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020031000 CR3: 00000000450ec000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dquot_scan_active+0x156/0x280 fs/quota/dquot.c:644
 qsync_work_fn+0xa9/0x150 fs/ocfs2/quota_global.c:658
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/01 16:01 upstream ccb98ccef0e5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dqput
2025/01/01 08:22 upstream ccb98ccef0e5 d3ccff63 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in dqput
2025/01/01 03:59 upstream ccb98ccef0e5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dqput
2024/11/29 16:17 upstream 7af08b57bcb9 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dqput
2024/09/26 22:34 upstream 11a299a7933e 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dqput
2025/01/13 02:21 linux-next 7b4b9bf203da 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dqput
* Struck through repros no longer work on HEAD.