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WARNING in mark_buffer_dirty (7)

Status: upstream: reported C repro on 2025/05/10 17:11
Subsystems: bfs hfs
[Documentation on labels]
Reported-by: syzbot+2327bccb02eef9291c1c@syzkaller.appspotmail.com
First crash: 194d, last: 12h39m
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] [hfs?] WARNING in mark_buffer_dirty (7) 0 (2) 2025/11/16 10:13
[syzbot] Monthly bfs report (Oct 2025) 0 (1) 2025/10/11 09:29
▶ ▼ Similar bugs (14)
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 1050d 1396d 0/1 upstream: reported C repro on 2022/01/20 22:23
upstream WARNING in mark_buffer_dirty (6) fs -1 C error 11669 194d 761d 28/29 fixed on 2025/05/06 15:33
upstream WARNING in mark_buffer_dirty (4) bfs nilfs -1 C inconclusive 1152 892d 1231d 22/29 fixed on 2023/06/08 14:41
android-44 WARNING in mark_buffer_dirty -1 2 2510d 2408d 0/2 auto-closed as invalid on 2019/07/01 11:44
upstream WARNING in mark_buffer_dirty fs -1 C 21 2540d 2922d 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 992d 1375d 0/1 upstream: reported C repro on 2022/02/10 08:17
upstream WARNING in mark_buffer_dirty (2) ext4 -1 665 2042d 2174d 0/29 auto-closed as invalid on 2020/07/14 01:44
linux-6.6 WARNING in mark_buffer_dirty origin:lts-only -1 C inconclusive 164 53m 127d 0/2 upstream: reported C repro on 2025/07/12 17:25
upstream WARNING in mark_buffer_dirty (5) nilfs -1 C done 172 769d 888d 23/29 fixed on 2023/10/12 12:48
upstream WARNING in mark_buffer_dirty (3) ext4 -1 2 1723d 1736d 0/29 auto-closed as invalid on 2021/06/27 09:01
android-49 WARNING in mark_buffer_dirty -1 7 2356d 2408d 0/3 auto-closed as invalid on 2019/10/25 08:47
linux-4.14 WARNING in mark_buffer_dirty -1 1 2135d 2135d 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 294 8d02h 977d 0/3 upstream: reported C repro on 2023/03/15 22:22
linux-6.1 WARNING in mark_buffer_dirty origin:lts-only -1 C inconclusive 356 14d 979d 0/3 upstream: reported C repro on 2023/03/13 14:09
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/11/16 10:13 20m zlatistiv@gmail.com patch upstream OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5710 at fs/buffer.c:1183 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1183
Modules linked in:
CPU: 0 UID: 0 PID: 5710 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1183
Code: 4c 89 f7 e8 d9 4b dd ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 d4 02 fc ff e8 0f 5f 78 ff eb 8c e8 08 5f 78 ff 90 <0f> 0b 90 e9 95 fd ff ff e8 fa 5e 78 ff 90 0f 0b 90 e9 bf fd ff ff
RSP: 0018:ffffc9000d8ef608 EFLAGS: 00010293
RAX: ffffffff82475c38 RBX: ffff8880447013a0 RCX: ffff888011e44880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffff88804dfd2001 R08: ffff8880447013a7 R09: 1ffff110088e0274
R10: dffffc0000000000 R11: ffffed10088e0275 R12: ffff888045f1c000
R13: ffff8880446fe3a0 R14: ffff8880447013a0 R15: 000000000000000b
FS:  00007f51709b76c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5170995fc8 CR3: 000000004270f000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bfs_move_block fs/bfs/file.c:44 [inline]
 bfs_move_blocks fs/bfs/file.c:57 [inline]
 bfs_get_block+0x5da/0xae0 fs/bfs/file.c:126
 __block_write_begin_int+0x6b5/0x1900 fs/buffer.c:2145
 block_write_begin+0x8a/0x120 fs/buffer.c:2256
 bfs_write_begin+0x35/0xd0 fs/bfs/file.c:180
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4175
 generic_file_write_iter+0x117/0x550 mm/filemap.c:4318
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f516fb8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f51709b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f516fdb5fa0 RCX: 00007f516fb8ebe9
RDX: 0000000000000020 RSI: 0000200000000b80 RDI: 0000000000000005
RBP: 00007f516fc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f516fdb6038 R14: 00007f516fdb5fa0 R15: 00007ffe61bbc958
 </TASK>

Crashes (616):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/26 03:58 upstream b6add54ba618 bf27483f .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/17 14:18 upstream 172a9d94339c f41472b0 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 21:50 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 21:08 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/05/06 20:16 upstream 0d8d44db295c 350f4ffc .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/09 03:40 upstream 7bb4d6512545 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in mark_buffer_dirty
2025/11/06 05:09 upstream 1c353dc8d962 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in mark_buffer_dirty
2025/10/15 10:18 upstream 9b332cece987 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in mark_buffer_dirty
2025/10/10 21:36 upstream 917167ed1211 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in mark_buffer_dirty
2025/10/06 05:29 upstream 7a405dbb0f03 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in mark_buffer_dirty
2025/09/25 01:08 upstream 4ea5af085908 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in mark_buffer_dirty
2025/11/12 23:04 upstream 24172e0d7990 07e030de .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/11 11:08 upstream 4427259cc7f7 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/08 18:48 upstream e811c33b1f13 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/07 13:50 upstream 4a0c9b339199 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/07 06:35 upstream c2c2ccfd4ba7 4e1406b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/05 11:23 upstream 284922f4c563 a6c9c731 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/11/01 05:43 upstream 58fdd8484c05 2c50b6a9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/31 02:06 upstream e53642b87a4f 2c50b6a9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/29 10:00 upstream 8eefed8f65cc fd2207e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/28 19:04 upstream fd57572253bc fd2207e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/28 04:39 upstream fd57572253bc fd2207e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/27 18:39 upstream dcb6fa37fd7b fd2207e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/27 14:16 upstream dcb6fa37fd7b fd2207e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/27 05:39 upstream dbfc6422a34d c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/26 03:34 upstream 72761a7e3122 c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/25 17:05 upstream 566771afc7a8 c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/22 19:17 upstream dd72c8fcf6d3 c0460fcd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/22 01:36 upstream 6548d364a3e8 252fbbad .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/19 10:51 upstream 1c64efcb083c 1c8c8cd8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/19 08:50 upstream 1c64efcb083c 1c8c8cd8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/16 21:14 upstream 634ec1fc7982 19568248 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/15 08:24 upstream 9b332cece987 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/14 13:58 upstream 3a8660878839 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/13 22:54 upstream 3a8660878839 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/13 17:11 upstream 3a8660878839 b6605ba8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/11 21:35 upstream 0739473694c4 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/11 16:02 upstream 0739473694c4 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/11 06:25 upstream 917167ed1211 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/11 02:28 upstream 917167ed1211 ff1712fe .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/08 18:03 upstream 0d97f2067c16 7e2882b3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/04 22:00 upstream cbf33b8e0b36 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/04 20:01 upstream cbf33b8e0b36 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/03 20:34 upstream e406d57be7bd 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/03 11:07 upstream f79e772258df 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/03 06:05 upstream f79e772258df 49379ee0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/02 03:32 upstream d3479214c05d 267f56c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/30 21:02 upstream 30d4efb2f5a5 65a0eece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/30 10:41 upstream 449c2b302c8e 86341da6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/30 02:00 upstream 449c2b302c8e 86341da6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/28 17:17 upstream 51a24b7deaae 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/28 11:24 upstream 51a24b7deaae 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/27 10:08 upstream 083fc6d7fa0d 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/27 08:24 upstream 083fc6d7fa0d 001c9061 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/26 15:40 upstream 4ff71af020ae 0abd0691 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/25 20:49 upstream bf40f4b87761 0abd0691 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/24 21:56 upstream 4ea5af085908 0abd0691 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/24 00:19 upstream cec1e6e5d1ab e667a34f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/22 08:36 upstream 07e27ad16399 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/09/20 20:54 upstream cd89d487374c 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in mark_buffer_dirty
2025/10/10 06:21 linux-next 0b2f041c47ac ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mark_buffer_dirty
2025/11/16 15:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci db9030a787e3 f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
2025/10/19 14:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
2025/10/02 09:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
2025/09/28 02:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
2025/09/23 13:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b5db4add5e77 0ac7291c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in mark_buffer_dirty
* Struck through repros no longer work on HEAD.