WARNING in mark_buffer

Date	Name	Commit	Repro	Result
2025/07/15	linux-6.6.y (ToT)	9247f4e6573a	C	[report] WARNING in mark_buffer_dirty
2025/07/15	upstream (ToT)	155a3c003e55	C	Didn't crash

Date

Name

Commit

Repro

Result

2025/07/15

linux-6.6.y (ToT)

9247f4e6573a

[report] WARNING in mark_buffer_dirty

2025/07/15

upstream (ToT)

155a3c003e55

Didn't crash

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING in mark_buffer_dirty bfs	-1	C		error	10	934d	1280d	0/1	upstream: reported C repro on 2022/01/20 22:23
upstream	WARNING in mark_buffer_dirty (6) fs	-1	C	error		11669	78d	645d	28/29	fixed on 2025/05/06 15:33
upstream	WARNING in mark_buffer_dirty (4) bfs nilfs	-1	C	inconclusive		1152	776d	1116d	22/29	fixed on 2023/06/08 14:41
android-44	WARNING in mark_buffer_dirty	-1				2	2394d	2293d	0/2	auto-closed as invalid on 2019/07/01 11:44
upstream	WARNING in mark_buffer_dirty fs	-1	C			21	2424d	2807d	0/29	closed as invalid on 2019/07/24 04:22
linux-4.14	WARNING in mark_buffer_dirty (2) nilfs2	-1	C		error	8	877d	1260d	0/1	upstream: reported C repro on 2022/02/10 08:17
upstream	WARNING in mark_buffer_dirty (2) ext4	-1				665	1926d	2059d	0/29	auto-closed as invalid on 2020/07/14 01:44
upstream	WARNING in mark_buffer_dirty (5) nilfs	-1	C	done		172	653d	772d	23/29	fixed on 2023/10/12 12:48
upstream	WARNING in mark_buffer_dirty (7) bfs hfs	-1	C			458	6h31m	74d	0/29	upstream: reported C repro on 2025/05/10 17:11
upstream	WARNING in mark_buffer_dirty (3) ext4	-1				2	1608d	1620d	0/29	auto-closed as invalid on 2021/06/27 09:01
android-49	WARNING in mark_buffer_dirty	-1				7	2240d	2293d	0/3	auto-closed as invalid on 2019/10/25 08:47
linux-4.14	WARNING in mark_buffer_dirty	-1				1	2020d	2020d	0/1	auto-closed as invalid on 2020/05/11 07:45
linux-5.15	WARNING in mark_buffer_dirty origin:upstream	-1	C		error	290	15d	861d	0/3	upstream: reported C repro on 2023/03/15 22:22
linux-6.1	WARNING in mark_buffer_dirty origin:upstream	-1	C		error	352	11d	863d	0/3	upstream: reported C repro on 2023/03/13 14:09

------------[ cut here ]------------ WARNING: CPU: 1 PID: 6023 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188 Modules linked in: CPU: 1 PID: 6023 Comm: segctord Not tainted 6.6.97-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/19/2025 RIP: 0010:mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188 Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 ef ac fc ff e8 ca 95 88 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 fa 57 e8 ff e8 b5 95 88 ff <0f> 0b e9 84 fd ff ff e8 a9 95 88 ff 0f 0b e9 b0 fd ff ff e8 9d 95 RSP: 0018:ffffc900036d76f0 EFLAGS: 00010293 RAX: ffffffff81fd00bb RBX: ffff888060268740 RCX: ffff888026a79e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc900036d7b01 R08: ffff888060268747 R09: 1ffff1100c04d0e8 R10: dffffc0000000000 R11: ffffed100c04d0e9 R12: 1ffff1100b6174f5 R13: ffff88805b0ba7b8 R14: ffff88805b0ba140 R15: 1ffff1100b6174f7 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fefb0344000 CR3: 00000000262e1000 CR4: 00000000003506e0 Call Trace: <TASK> nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2009 [inline] nilfs_segctor_do_construct+0x32c/0x6870 fs/nilfs2/segment.c:2071 nilfs_segctor_construct+0x17b/0x690 fs/nilfs2/segment.c:2454 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2562 [inline] nilfs_segctor_thread+0x4f6/0x1000 fs/nilfs2/segment.c:2646 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 </TASK>

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/07/12 18:26	linux-6.6.y	59a2de10b81a	3cda49cf	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-6-6-kasan	WARNING in mark_buffer_dirty
2025/07/12 17:25	linux-6.6.y	59a2de10b81a	3cda49cf	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan	WARNING in mark_buffer_dirty

Crashes (2):

Assets (help?)