syzbot

 sign-in | mailing list | source | docs
🐞 Open [701]
🐞 Fixed [89]
🐞 Invalid [360]
⬇ Missing Backports [40]
Kernel Health Bugs/Month Bug Lifetimes Fuzzing Crashes
💬 Send us feedback

kernel BUG in submit_bh_wbc (2)

Status: upstream: reported on 2024/07/26 16:49
Reported-by: syzbot+e2f0d8715ecd9cb1024c@syzkaller.appspotmail.com
First crash: 48d, last: 18h09m
▶ ▼ Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in submit_bh_wbc origin:lts-only C done 19 98d 527d 3/3 fixed on 2024/07/20 06:27
upstream kernel BUG at fs/buffer.c:LINE! nilfs C done error 567 156d 2338d 25/27 fixed on 2024/04/10 03:59
upstream kernel BUG in submit_bh_wbc (2) udf C done 123 35d 140d 27/27 fixed on 2024/08/14 03:44
linux-4.14 kernel BUG at fs/buffer.c:LINE! C error 59 570d 1965d 0/1 upstream: reported C repro on 2019/04/27 19:47
linux-4.19 kernel BUG at fs/buffer.c:LINE! (2) udf ext4 C error 31 577d 1391d 0/1 upstream: reported C repro on 2020/11/21 07:48
android-54 kernel BUG at fs/buffer.c:LINE! ext4 C 1187 29d 1696d 0/2 upstream: reported C repro on 2020/01/21 13:12
linux-5.15 kernel BUG in submit_bh_wbc C error 8 188d 466d 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 141d 151d 25/27 fixed on 2024/04/24 18:26
android-6-1 kernel BUG in submit_bh_wbc missing-backport origin:lts C done done 231 1h06m 456d 0/2 upstream: reported C repro on 2023/06/15 00:20

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2666!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3882 Comm: kmmpd-loop0 Not tainted 6.1.109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:submit_bh_wbc+0x4c0/0x4e0 fs/buffer.c:2666
Code: 02 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 89 ef e8 41 5f e0 ff e9 b1 fe ff ff e8 e7 de 88 ff 0f 0b e8 e0 de 88 ff <0f> 0b e8 d9 de 88 ff 0f 0b e8 d2 de 88 ff 0f 0b e8 cb de 88 ff 0f
RSP: 0018:ffffc90004ea7c40 EFLAGS: 00010293
RAX: ffffffff8201cf90 RBX: 0000000000000000 RCX: ffff888024f31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004ea7d50 R08: ffffffff8201cb6d R09: ffffed100addf875
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100addf874
R13: ffff888056efc3a0 R14: 0000000000000000 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffa CR3: 000000005e592000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 write_mmp_block_thawed+0x3b6/0x5a0 fs/ext4/mmp.c:51
 write_mmp_block+0x13f/0x390 fs/ext4/mmp.c:67
 kmmpd+0x40c/0xa70 fs/ext4/mmp.c:178
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x4c0/0x4e0 fs/buffer.c:2666
Code: 02 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 89 ef e8 41 5f e0 ff e9 b1 fe ff ff e8 e7 de 88 ff 0f 0b e8 e0 de 88 ff <0f> 0b e8 d9 de 88 ff 0f 0b e8 d2 de 88 ff 0f 0b e8 cb de 88 ff 0f
RSP: 0018:ffffc90004ea7c40 EFLAGS: 00010293
RAX: ffffffff8201cf90 RBX: 0000000000000000 RCX: ffff888024f31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004ea7d50 R08: ffffffff8201cb6d R09: ffffed100addf875
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100addf874
R13: ffff888056efc3a0 R14: 0000000000000000 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f1a856ba8 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/12 07:43 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:42 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:41 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:41 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:41 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:40 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:39 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:35 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:34 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:33 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:32 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:31 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:28 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:26 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:25 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/09/12 07:23 linux-6.1.y 5ca5b389fddf d94c83d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in submit_bh_wbc
2024/07/26 16:49 linux-6.1.y c18e82d3ee44 46eb10b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in submit_bh_wbc
* Struck through repros no longer work on HEAD.