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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: 1906d, last: 4h49m
▶ ▼ Similar bugs (18)
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 366d 2548d 25/28 fixed on 2024/04/10 03:59
android-49 kernel BUG at fs/buffer.c:LINE! 5 2446d 2501d 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 780d 2175d 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 1712d 2166d 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 787d 1601d 0/1 upstream: reported C repro on 2020/11/21 07:48
linux-6.1 kernel BUG in mark_buffer_dirty_inode 1 90d 90d 0/3 upstream: reported on 2025/01/10 01:10
android-6-1 kernel BUG in mark_buffer_dirty_inode syz inconclusive 3 115d 184d 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 575d 575d 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 35d 447d 0/2 upstream: reported C repro on 2024/01/19 10:04
android-5-10 kernel BUG in __block_commit_write 1 575d 575d 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 54d 449d 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 308d 736d 3/3 fixed on 2024/07/20 06:27
upstream kernel BUG in submit_bh_wbc (2) udf C done 123 245d 350d 27/28 fixed on 2024/08/14 03:44
linux-6.1 kernel BUG in submit_bh_wbc (2) origin:lts-only C inconclusive 187 2d02h 258d 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 171d 178d 28/28 fixed on 2024/11/12 23:31
linux-5.15 kernel BUG in submit_bh_wbc C error 8 398d 676d 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 351d 360d 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 1737 8h46m 665d 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:
EXT4-fs (loop2): Ignoring removed mblk_io_submit option
------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1726 Comm: syz-executor405 Not tainted 5.4.290-syzkaller-00002-g41adfeb3d639 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:submit_bh_wbc+0x831/0x850 fs/buffer.c:3027
Code: 10 80 e1 07 80 c1 03 38 c1 0f 8c 14 fe ff ff 48 8b 7c 24 10 e8 00 88 ea ff e9 05 fe ff ff e8 d6 9d ba ff 0f 0b e8 cf 9d ba ff <0f> 0b e8 c8 9d ba ff 0f 0b e8 c1 9d ba ff 0f 0b e8 ba 9d ba ff 0f
RSP: 0000:ffff8881f0e977b0 EFLAGS: 00010293
RAX: ffffffff81a9ad31 RBX: 0000000000000000 RCX: ffff8881f0dacec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000080000 R08: ffffffff81a9a5a4 R09: ffffed103b3ebcfd
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881d9f5e7e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f480b48f6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f480314d000 CR3: 00000001de67b000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ll_rw_block+0x1cf/0x230 arch/x86/include/asm/atomic.h:97
 __breadahead_gfp+0xc9/0x190 fs/buffer.c:1346
 sb_breadahead_unmovable include/linux/buffer_head.h:361 [inline]
 ext4_fill_super+0x5458/0x8d90 fs/ext4/super.c:4369
 mount_bdev+0x267/0x370 fs/super.c:1428
 legacy_get_tree+0xdf/0x170 fs/fs_context.c:648
 vfs_get_tree+0x85/0x260 fs/super.c:1558
 do_new_mount+0x292/0x570 fs/namespace.c:2850
 do_mount+0x688/0xe10 fs/namespace.c:3170
 ksys_mount+0xc2/0xf0 fs/namespace.c:3379
 __do_sys_mount fs/namespace.c:3393 [inline]
 __se_sys_mount fs/namespace.c:3390 [inline]
 __x64_sys_mount+0xb1/0xc0 fs/namespace.c:3390
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f480b4d455a
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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f480b48f088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f480b48f0a0 RCX: 00007f480b4d455a
RDX: 0000200000000280 RSI: 0000200000001100 RDI: 00007f480b48f0a0
RBP: 0000200000001100 R08: 00007f480b48f0e0 R09: 00007f480b48f0e0
R10: 0000000000000801 R11: 0000000000000246 R12: 0000200000000280
R13: 0000000000000006 R14: 0000000000000003 R15: 00007f480b48f0e0
Modules linked in:
---[ end trace c869f0298d58329a ]---
RIP: 0010:submit_bh_wbc+0x831/0x850 fs/buffer.c:3027
Code: 10 80 e1 07 80 c1 03 38 c1 0f 8c 14 fe ff ff 48 8b 7c 24 10 e8 00 88 ea ff e9 05 fe ff ff e8 d6 9d ba ff 0f 0b e8 cf 9d ba ff <0f> 0b e8 c8 9d ba ff 0f 0b e8 c1 9d ba ff 0f 0b e8 ba 9d ba ff 0f
RSP: 0000:ffff8881f0e977b0 EFLAGS: 00010293
RAX: ffffffff81a9ad31 RBX: 0000000000000000 RCX: ffff8881f0dacec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000080000 R08: ffffffff81a9a5a4 R09: ffffed103b3ebcfd
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881d9f5e7e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f480b48f6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f480b44dd58 CR3: 00000001de67b000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2183):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2025/04/10 17:25 android12-5.4 41adfeb3d639 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/10 10:52 android12-5.4 41adfeb3d639 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/09 05:37 android12-5.4 41adfeb3d639 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/09 02:52 android12-5.4 41adfeb3d639 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/08 02:02 android12-5.4 41adfeb3d639 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/06 23:31 android12-5.4 41adfeb3d639 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/06 15:53 android12-5.4 41adfeb3d639 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/06 08:07 android12-5.4 41adfeb3d639 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/05 19:02 android12-5.4 41adfeb3d639 c53ea9c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/05 03:57 android12-5.4 41adfeb3d639 c53ea9c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/05 02:16 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 23:36 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 21:13 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 20:15 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 18:38 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 10:05 android12-5.4 41adfeb3d639 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 09:05 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 07:55 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 07:54 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 05:58 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 04:41 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/04 03:06 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 18:40 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 18:27 android12-5.4 41adfeb3d639 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 17:07 android12-5.4 41adfeb3d639 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 14:28 android12-5.4 41adfeb3d639 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 07:40 android12-5.4 41adfeb3d639 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 06:21 android12-5.4 41adfeb3d639 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 06:14 android12-5.4 41adfeb3d639 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 05:13 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 05:13 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 04:06 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 02:57 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 01:03 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/03 00:17 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 21:41 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 20:34 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 20:02 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 17:29 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 15:13 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 11:01 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 06:21 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/04/02 06:19 android12-5.4 41adfeb3d639 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in submit_bh_wbc
2025/03/22 17:08 android12-5.4 41adfeb3d639 c6512ef7 .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.