WARNING in ocfs2_journal_toggle_dirty

Status: upstream: reported on 2026/08/27 01:12
Subsystems: ocfs2
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+74790b3c813acfbc0b7f@syzkaller.appspotmail.com
First crash: 5d00h, last: 5d00h
✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision
b4c66712 assessment-security DenialOfService: ❌ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ WARNING in ocfs2_journal_toggle_dirty 2026/08/24 01:19 2026/08/24 01:19 2026/08/24 01:22 1e72964b
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] WARNING in ocfs2_journal_toggle_dirty 0 (1) 2026/08/27 01:12

Sample crash report:
(syz.0.20,5939,0):ocfs2_shutdown_local_alloc:412 ERROR: status = -117
------------[ cut here ]------------
!OCFS2_IS_VALID_DINODE(fe)
WARNING: fs/ocfs2/journal.c:1029 at ocfs2_journal_toggle_dirty+0x304/0x370 fs/ocfs2/journal.c:1029, CPU#0: syz.0.20/5939
Modules linked in:
CPU: 0 UID: 0 PID: 5939 Comm: syz.0.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:ocfs2_journal_toggle_dirty+0x304/0x370 fs/ocfs2/journal.c:1029
Code: e8 31 fd 14 00 43 c6 44 27 04 f8 e9 43 ff ff ff e8 f1 a4 dc fd e9 39 ff ff ff e8 e7 a4 dc fd e9 2f ff ff ff e8 dd a4 dc fd 90 <0f> 0b 90 bb fb ff ff ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24
RSP: 0018:ffffc90002e66fa0 EFLAGS: 00010283
RAX: ffffffff83ea84b3 RBX: 1ffff1100ed2dce5 RCX: 0000000000080000
RDX: ffffc90003db9000 RSI: 0000000000056367 RDI: 0000000000056368
RBP: ffffc90002e67070 R08: ffffffff90798137 R09: 1ffffffff20f3026
R10: dffffc0000000000 R11: fffffbfff20f3027 R12: 00000000ffffffff
R13: ffff8880528b6600 R14: ffff88803622ac00 R15: 0000000000000000
FS:  00007fe6cae546c0(0000) GS:ffff888124cfd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33a1eff8 CR3: 0000000054aea000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ocfs2_journal_shutdown+0x540/0xb70 fs/ocfs2/journal.c:1112
 ocfs2_mount_volume fs/ocfs2/super.c:1784 [inline]
 ocfs2_fill_super+0x59ea/0x6840 fs/ocfs2/super.c:1083
 get_tree_bdev_flags+0x430/0x4f0 fs/super.c:1887
 vfs_get_tree+0x92/0x2a0 fs/super.c:1947
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3772 [inline]
 do_new_mount+0x319/0xdc0 fs/namespace.c:3848
 do_mount fs/namespace.c:4181 [inline]
 __do_sys_mount fs/namespace.c:4397 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4374
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe6c9f9f34a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe6cae53e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe6cae53ee0 RCX: 00007fe6c9f9f34a
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007fe6cae53ea0
RBP: 0000200000004440 R08: 00007fe6cae53ee0 R09: 00000000000008c0
R10: 00000000000008c0 R11: 0000000000000246 R12: 0000200000000040
R13: 00007fe6cae53ea0 R14: 0000000000004451 R15: 0000200000000080
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/23 01:08 upstream 66fb95a52111 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ocfs2_journal_toggle_dirty
* Struck through repros no longer work on HEAD.