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kernel BUG in submit_bh_wbc

Status: upstream: reported C repro on 2023/06/15 00:20
Bug presence: origin:lts
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+807c663f72dcf074e3e2@syzkaller.appspotmail.com
First crash: 583d, last: 6h03m
Cause bisection: introduced by (bisect log) :
commit 8d5459c11f548131ce48b2fbf45cccc5c382558f
Author: Jan Kara <jack@suse.cz>
Date: Fri May 20 11:14:02 2022 +0000

  ext4: improve write performance with disabled delalloc

Crash: kernel BUG in submit_bh_wbc (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit 32b9fb9a67ec70bbe3afe931b0ea44203150a49a
Author: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Date: Mon Sep 18 10:45:50 2023 +0000

  ext4: mark buffer new if it is unwritten to avoid stale data exposure

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/03/17 lts (merge base) 883d1a956208 C [report] kernel BUG in submit_bh_wbc
2024/03/31 upstream (ToT) 18737353cca0 C Didn't crash
▶ ▼ Similar bugs (10)
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 225d 654d 3/3 fixed on 2024/07/20 06:27
upstream kernel BUG at fs/buffer.c:LINE! nilfs C done error 567 284d 2465d 25/28 fixed on 2024/04/10 03:59
upstream kernel BUG in submit_bh_wbc (2) udf C done 123 162d 267d 27/28 fixed on 2024/08/14 03:44
linux-4.14 kernel BUG at fs/buffer.c:LINE! C error 59 697d 2092d 0/1 upstream: reported C repro on 2019/04/27 19:47
linux-6.1 kernel BUG in submit_bh_wbc (2) origin:lts-only C 114 22h49m 175d 0/3 upstream: reported C repro on 2024/07/26 16:49
linux-4.19 kernel BUG at fs/buffer.c:LINE! (2) udf ext4 C error 31 705d 1518d 0/1 upstream: reported C repro on 2020/11/21 07:48
android-54 kernel BUG at fs/buffer.c:LINE! ext4 C 1187 86d 1823d 0/2 upstream: reported C repro on 2020/01/21 13:12
upstream kernel BUG in submit_bh_wbc (3) nilfs fs C done 18 88d 96d 28/28 fixed on 2024/11/12 23:31
linux-5.15 kernel BUG in submit_bh_wbc C error 8 315d 593d 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 268d 278d 25/28 fixed on 2024/04/24 18:26
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/07/28 10:17 5m retest repro android14-6.1 report log
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/03/11 21:14 3h12m bisect fix android14-6.1 OK (1) job log
2023/07/28 15:24 1h02m bisect fix android14-6.1 OK (0) job log log

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2714!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 300 Comm: kmmpd-loop0 Not tainted 6.1.115-syzkaller-00017-g22b7ded8b55b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 e4 ce e6 ff e9 b0 fe ff ff e8 da 5c 9f ff 0f 0b e8 d3 5c 9f ff <0f> 0b e8 cc 5c 9f ff 0f 0b e8 c5 5c 9f ff 0f 0b e8 be 5c 9f ff 0f
RSP: 0018:ffffc90000e87c20 EFLAGS: 00010293
RAX: ffffffff81d629dd RBX: 0000000000000000 RCX: ffff888110f1d100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e87c70 R08: ffffffff81d625b0 R09: ffffed102174157b
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff1102174157a R14: ffff88810ba0abd0 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3719ada678 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 submit_bh+0x1d/0x30 fs/buffer.c:2755
 write_mmp_block_thawed+0x3a0/0x570 fs/ext4/mmp.c:51
 write_mmp_block+0x12b/0x2a0 fs/ext4/mmp.c:67
 kmmpd+0x263/0xa10 fs/ext4/mmp.c:246
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 e4 ce e6 ff e9 b0 fe ff ff e8 da 5c 9f ff 0f 0b e8 d3 5c 9f ff <0f> 0b e8 cc 5c 9f ff 0f 0b e8 c5 5c 9f ff 0f 0b e8 be 5c 9f ff 0f
RSP: 0018:ffffc90000e87c20 EFLAGS: 00010293
RAX: ffffffff81d629dd RBX: 0000000000000000 RCX: ffff888110f1d100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e87c70 R08: ffffffff81d625b0 R09: ffffed102174157b
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff1102174157a R14: ffff88810ba0abd0 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3719ada678 CR3: 000000010f7f8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1402):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/16 06:57 android14-6.1 22b7ded8b55b 7cbfbb3a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/11/30 07:55 android14-6.1 a887a44ace2a 68914665 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/11/21 19:03 android14-6.1 51bee181735e 4b25d554 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/10/08 00:13 android14-6.1 0e8b65e41ffd d7906eff .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/09/25 06:24 android14-6.1 5c7d0d4f4a38 5643e0e9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/08/20 20:36 android14-6.1 edca080b95df 9f0ab3fb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2024/03/17 12:15 android14-6.1 ef39f76e4d24 d615901c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2023/10/24 12:09 android14-6.1 8a67c0609445 af8d2e46 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2023/09/24 09:56 android14-6.1 060ebb378d1c 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2023/06/15 00:46 android14-6.1 60662882b7bd 76decb82 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2023/06/15 00:18 android14-6.1 60662882b7bd 76decb82 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/18 01:33 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/17 16:55 android14-6.1 dbdf659cc65c 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/17 14:17 android14-6.1 dbdf659cc65c 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/17 11:46 android14-6.1 dbdf659cc65c 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/16 17:11 android14-6.1 dbdf659cc65c f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/15 21:49 android14-6.1 e09bed30088f 968edaf4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/14 20:05 android14-6.1 a33878393a85 f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/14 14:09 android14-6.1 770852bf7d99 f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/14 01:03 android14-6.1 770852bf7d99 b1f1cd88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/13 14:37 android14-6.1 770852bf7d99 249ceea9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/13 08:46 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/13 04:08 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/13 02:55 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/12 20:39 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/12 14:15 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/12 11:58 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/12 09:31 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/11 21:50 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/11 20:22 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/11 18:27 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/11 06:29 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/09 14:57 android14-6.1 bda0401cd827 9220929f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/09 09:26 android14-6.1 7e96f2bfaa90 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/09 00:27 android14-6.1 7e96f2bfaa90 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/08 23:07 android14-6.1 7e96f2bfaa90 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/08 16:25 android14-6.1 616d7c64fd84 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/08 00:09 android14-6.1 616d7c64fd84 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/07 18:30 android14-6.1 66ae563a6598 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/07 10:27 android14-6.1 eeccb2921815 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/07 05:05 android14-6.1 eeccb2921815 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/07 04:00 android14-6.1 eeccb2921815 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 15:47 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 14:22 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 12:40 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 10:32 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 08:50 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 04:34 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 03:21 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 02:36 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/06 00:44 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/05 23:32 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2025/01/05 19:40 android14-6.1 e2b9748880b9 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
2023/06/15 00:02 android14-6.1 60662882b7bd 76decb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 kernel BUG in submit_bh_wbc
* Struck through repros no longer work on HEAD.