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kernel BUG at fs/buffer.c:LINE!

Status: upstream: reported C repro on 2020/01/21 13:12
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+bf9c89ab867a402aa9bb@syzkaller.appspotmail.com
First crash: 1944d, last: 15m
▶ ▼ Similar bugs (19)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at fs/buffer.c:LINE! nilfs C done error 567 404d 2586d 25/28 fixed on 2024/04/10 03:59
android-49 kernel BUG at fs/buffer.c:LINE! 5 2485d 2540d 0/3 auto-closed as invalid on 2019/02/22 13:09
linux-4.14 kernel BUG at fs/buffer.c:LINE! C error 59 818d 2213d 0/1 upstream: reported C repro on 2019/04/27 19:47
linux-4.19 kernel BUG at fs/buffer.c:LINE! syz done 23 1751d 2204d 1/1 fixed on 2020/09/01 18:34
linux-4.19 kernel BUG at fs/buffer.c:LINE! (2) udf ext4 C error 31 825d 1639d 0/1 upstream: reported C repro on 2020/11/21 07:48
android-6-1 kernel BUG in mark_buffer_dirty_inode (2) 1 11d 11d 0/2 premoderation: reported on 2025/05/07 18:20
linux-6.1 kernel BUG in mark_buffer_dirty_inode 1 129d 129d 0/3 auto-obsoleted due to no activity on 2025/04/20 01:10
android-6-1 kernel BUG in mark_buffer_dirty_inode syz inconclusive 3 153d 223d 0/2 auto-obsoleted due to no activity on 2025/03/16 04:31
android-6-1 kernel BUG in __block_commit_write syz error error 1 613d 613d 0/2 auto-obsoleted due to no activity on 2023/12/12 18:06
android-6-1 kernel BUG in __block_commit_write (2) origin:upstream C error error 1 3d02h 485d 0/2 upstream: reported C repro on 2024/01/19 10:04
android-5-10 kernel BUG in __block_commit_write 1 613d 613d 0/2 auto-obsoleted due to no activity on 2023/12/12 11:41
android-5-10 kernel BUG in __block_commit_write (2) syz error 2 22d 487d 0/2 premoderation: reported syz repro on 2024/01/17 04:07
linux-6.1 kernel BUG in submit_bh_wbc origin:lts-only C done 19 346d 775d 3/3 fixed on 2024/07/20 06:27
upstream kernel BUG in submit_bh_wbc (2) udf C done 123 283d 388d 27/28 fixed on 2024/08/14 03:44
linux-6.1 kernel BUG in submit_bh_wbc (2) origin:lts-only C inconclusive 200 3h27m 296d 0/3 upstream: reported C repro on 2024/07/26 16:49
upstream kernel BUG in submit_bh_wbc (3) nilfs fs C done 18 209d 216d 28/28 fixed on 2024/11/12 23:31
linux-5.15 kernel BUG in submit_bh_wbc C error 8 436d 714d 0/3 auto-obsoleted due to no activity on 2024/06/16 14:58
upstream kernel BUG in submit_bh_wbc nilfs C done 10 389d 399d 25/28 fixed on 2024/04/24 18:26
android-6-1 kernel BUG in submit_bh_wbc missing-backport origin:lts C done done 1880 5h05m 704d 0/2 upstream: reported C repro on 2023/06/15 00:20
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/01/02 07:04 2m retest repro android12-5.4 error
2024/12/27 17:14 9m retest repro android12-5.4 error
2024/12/27 17:14 7m retest repro android12-5.4 error
2024/12/27 17:14 6m retest repro android12-5.4 error
2024/12/27 17:14 2m retest repro android12-5.4 error
2024/12/27 17:14 51m retest repro android12-5.4 error
2024/12/04 19:40 5m retest repro android12-5.4 error
2024/12/04 19:40 1m retest repro android12-5.4 error
2024/12/04 19:40 2m retest repro android12-5.4 error
2024/12/04 19:40 2m retest repro android12-5.4 error

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 364 Comm: syz-executor129 Not tainted 5.4.290-syzkaller-00001-g986c38813dff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:submit_bh_wbc+0x897/0x8c0 fs/buffer.c:3027
Code: 4d b8 80 e1 07 80 c1 03 38 c1 0f 8c fe fd ff ff 48 8b 7d b8 e8 6a 6d ea ff e9 f0 fd ff ff e8 10 cd b9 ff 0f 0b e8 09 cd b9 ff <0f> 0b e8 02 cd b9 ff 0f 0b e8 fb cc b9 ff 0f 0b e8 f4 cc b9 ff 0f
RSP: 0018:ffff8881ee75f6a8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881f0d16e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ee75f748 R08: ffffffff81abc5d3 R09: ffffed103b95ee16
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881dcaf70a8 R15: dffffc0000000000
FS:  0000555575b7a380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4abfbe7468 CR3: 00000001ef079000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh+0x28/0x40 fs/buffer.c:3076
 read_mmp_block+0x1a2/0x8a0 fs/ext4/mmp.c:91
 ext4_multi_mount_protect+0x5e1/0xa50 fs/ext4/mmp.c:358
 ext4_fill_super+0x5cf7/0x8d90 fs/ext4/super.c:4434
 mount_bdev+0x273/0x380 fs/super.c:1428
 ext4_mount+0x34/0x40 fs/ext4/super.c:6279
 legacy_get_tree+0xee/0x190 fs/fs_context.c:648
 vfs_get_tree+0x88/0x290 fs/super.c:1558
 do_new_mount+0x292/0x570 fs/namespace.c:2850
 do_mount+0x688/0xe10 fs/namespace.c:3170
 ksys_mount+0xcc/0x100 fs/namespace.c:3379
 __do_sys_mount fs/namespace.c:3393 [inline]
 __se_sys_mount fs/namespace.c:3390 [inline]
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3390
 do_syscall_64+0xd8/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f4abfba059a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7c838b08 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffd7c838b60 RCX: 00007f4abfba059a
RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffd7c838b60
RBP: 0000200000000200 R08: 00007ffd7c838ba0 R09: 000000000000050d
R10: 0000000003000800 R11: 0000000000000206 R12: 0000200000000100
R13: 00007ffd7c838ba0 R14: 0000000000000513 R15: 00002000000006c0
Modules linked in:
---[ end trace 7be708b168a7fab0 ]---
RIP: 0010:submit_bh_wbc+0x897/0x8c0 fs/buffer.c:3027
Code: 4d b8 80 e1 07 80 c1 03 38 c1 0f 8c fe fd ff ff 48 8b 7d b8 e8 6a 6d ea ff e9 f0 fd ff ff e8 10 cd b9 ff 0f 0b e8 09 cd b9 ff <0f> 0b e8 02 cd b9 ff 0f 0b e8 fb cc b9 ff 0f 0b e8 f4 cc b9 ff 0f
RSP: 0018:ffff8881ee75f6a8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881f0d16e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ee75f748 R08: ffffffff81abc5d3 R09: ffffed103b95ee16
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881dcaf70a8 R15: dffffc0000000000
FS:  0000555575b7a380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4abfbe7468 CR3: 00000001ef079000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4640):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/24 20:51 android12-5.4 986c38813dff 9882047a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/21 04:35 android12-5.4 41adfeb3d639 2a20f901 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/10 11:39 android12-5.4 41adfeb3d639 988b336c .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2024/06/11 03:08 android12-5.4 dd432c37afcd 048c640a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2024/03/02 21:52 android12-5.4 50cb39f34248 25905f5d .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2023/11/03 07:35 android12-5.4 2ac128c04e33 c4ac074c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2023/09/16 01:46 android12-5.4 19cff29fe49c 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2023/06/26 11:23 android12-5.4 f5af01b60cfa 79782afc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2023/03/15 20:59 android12-5.4 f4e4be09c27c 18b58603 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2022/11/22 20:15 android12-5.4 c80a5b2e7f63 9da37ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2022/10/13 20:49 android12-5.4 35e910266d44 adf90437 .config strace log report syz C [disk image] [vmlinux] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2022/05/14 15:55 android12-5.4 ee52e8cb3015 744a39e2 .config strace log report syz C ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2020/11/29 09:15 android12-5.4 e37aca80313f a0092f9d .config console log report syz C ci2-android-5-4-kasan
2022/08/24 03:29 android12-5.4 f3c75e616e3f cea8b0f7 .config console log report syz C ci2-android-5-4-kasan kernel BUG in __block_commit_write
2021/03/27 13:10 android12-5.4 7af03784d889 a8529b82 .config console log report syz C ci2-android-5-4-kasan kernel BUG in __block_commit_write
2022/09/03 09:06 android12-5.4 f0306959ab7c 49e94a20 .config console log report syz [disk image] [vmlinux] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2020/02/11 15:47 https://android.googlesource.com/kernel/common android-5.4 0dba8e724663 084454ae .config console log report syz ci2-android-5-4-kasan
2025/05/19 01:57 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/19 00:56 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 23:33 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 23:18 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 22:08 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 20:59 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 19:43 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 19:29 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 18:04 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 16:48 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 15:31 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 14:26 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 13:25 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 12:13 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 11:51 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 10:14 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 09:40 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 08:18 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 07:15 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 05:54 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 05:10 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 03:51 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 02:20 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/18 01:30 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 23:38 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 22:19 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 21:34 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 20:16 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 18:49 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 17:42 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 16:39 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 15:32 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 14:07 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 12:48 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 12:47 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 11:44 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 10:09 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 09:00 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 08:11 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 06:59 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 05:20 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 03:01 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/17 00:04 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/16 23:10 android12-5.4 cd8e74fa0fa3 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/05/05 03:59 android12-5.4 cd8e74fa0fa3 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in mark_buffer_dirty_inode
2024/01/17 05:04 android12-5.4 9ca091c99214 2a7bcc7f .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in __block_commit_write
2023/10/16 06:17 android12-5.4 5f1cbd78af59 f757a323 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2022/09/19 23:33 android12-5.4 f3665979a8e7 dd9a85ff .config console log report info [disk image] [vmlinux] ci2-android-5-4-kasan kernel BUG in __block_commit_write
2020/09/23 19:40 https://android.googlesource.com/kernel/common android-5.4 63d1c2f0b547 54289b08 .config console log report info ci2-android-5-4-kasan
2020/01/21 13:11 https://android.googlesource.com/kernel/common android-5.4 b0b02162a4b8 8eda0b95 .config console log report ci2-android-5-4-kasan
* Struck through repros no longer work on HEAD.