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kernel BUG in txLock (2)

Status: upstream: reported C repro on 2024/03/28 08:26
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+a843f6ae2130a987d63b@syzkaller.appspotmail.com
First crash: 715d, last: 2h15m
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [jfs?] kernel BUG in txLock (2) 0 (1) 2024/03/28 08:26
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 kernel BUG in txLock (2) origin:upstream -1 C 12 5d03h 472d 0/3 upstream: reported C repro on 2024/11/25 09:43
linux-6.6 kernel BUG in txLock origin:upstream -1 C error 6 60d 78d 0/2 upstream: reported C repro on 2025/12/24 20:44
linux-5.15 kernel BUG in txLock -1 1 917d 917d 0/3 auto-obsoleted due to no activity on 2023/12/16 09:17
upstream kernel BUG in txLock jfs -1 C inconclusive done 10 798d 915d 25/29 fixed on 2024/02/16 19:40
linux-6.1 kernel BUG in txLock origin:upstream -1 C error 14 32d 361d 0/3 upstream: reported C repro on 2025/03/16 14:14
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/10/01 12:48 23m retest repro upstream OK log
2025/09/16 22:55 24m retest repro linux-next OK log
2025/09/16 22:55 2h51m retest repro linux-next OK log
2025/08/21 02:05 20m retest repro upstream report log
2025/07/23 09:52 15m retest repro upstream report log
2025/07/08 21:00 16m retest repro linux-next report log
2025/07/08 21:00 16m retest repro linux-next report log
2025/06/11 18:34 27m retest repro upstream report log
2025/05/12 04:14 49m retest repro upstream report log
2025/04/29 11:28 22m retest repro linux-next error
▶ ▼ Fix bisection attempts (6)
Created Duration User Patch Repo Result
2025/09/25 21:59 11m bisect fix upstream error job log
2025/04/02 03:36 6h58m bisect fix upstream OK (0) job log log
2025/01/22 11:54 2h32m bisect fix upstream OK (0) job log log
2024/09/15 02:30 2h52m bisect fix upstream OK (0) job log log
2024/08/14 20:22 2h15m bisect fix upstream OK (0) job log log
2024/06/28 19:42 8h16m bisect fix upstream OK (0) job log log

Sample crash report:
Locker's tblock: ffffc90002628310: 02628310 ffffc900 02628310 ffffc900
Locker's tblock: ffffc90002628320: 00000004 00000024 00000023 00000000
Tlock: ffffc900028490d8: 00010004 202088c4 7fc15d90 ffff8880
Tlock: ffffc900028490e8: 77540430 ffff8880 01140000 05000010
Tlock: ffffc900028490f8: 00000001 0000002f 00000000 00000000
Tlock: ffffc90002849108: 00000000 00000000 00000000 00000000
Tlock: ffffc90002849118: 00000000 00000000
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:834!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 5069 Comm: syz-executor201 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:txLock+0x1ed3/0x21a0 fs/jfs/jfs_txnmgr.c:834
Code: 48 c7 c6 00 3c e2 8b ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 20 6a 00 6a 48 e8 52 e6 7a 01 48 83 c4 10 90 <0f> 0b e8 56 4e 72 fe 4c 89 f7 48 c7 c6 00 44 e2 8b e8 67 33 b8 fe
RSP: 0018:ffffc9000431f340 EFLAGS: 00010282
RAX: 48dda4629d120c00 RBX: 0000000000000010 RCX: ffff888026889e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000431f490 R08: ffffffff8175c06c R09: fffffbfff1bf9650
R10: dffffc0000000000 R11: fffffbfff1bf9650 R12: 1ffff9200050921b
R13: ffff88807757dc80 R14: 000000000000001b R15: ffffc900028490da
FS:  00007f7083b726c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f707c5ff000 CR3: 0000000023ae4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dtSplitRoot+0x430/0x1930 fs/jfs/jfs_dtree.c:1924
 dtSplitUp fs/jfs/jfs_dtree.c:990 [inline]
 dtInsert+0x12fa/0x6b00 fs/jfs/jfs_dtree.c:868
 jfs_create+0x7ba/0xb90 fs/jfs/namei.c:137
 vfs_create+0x23c/0x390 fs/namei.c:3199
 do_mknodat+0x44a/0x5b0 fs/namei.c:4051
 __do_sys_mknodat fs/namei.c:4082 [inline]
 __se_sys_mknodat fs/namei.c:4079 [inline]
 __x64_sys_mknodat+0xa9/0xc0 fs/namei.c:4079
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f7083bdcc59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7083b72218 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007f7083c6a6d8 RCX: 00007f7083bdcc59
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007f7083c6a6d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000700 R11: 0000000000000246 R12: 00007f7083c3106b
R13: 0030656c69662f2e R14: 7261637369646f6e R15: 6573726168636f69
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1ed3/0x21a0 fs/jfs/jfs_txnmgr.c:834
Code: 48 c7 c6 00 3c e2 8b ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 20 6a 00 6a 48 e8 52 e6 7a 01 48 83 c4 10 90 <0f> 0b e8 56 4e 72 fe 4c 89 f7 48 c7 c6 00 44 e2 8b e8 67 33 b8 fe
RSP: 0018:ffffc9000431f340 EFLAGS: 00010282
RAX: 48dda4629d120c00 RBX: 0000000000000010 RCX: ffff888026889e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000431f490 R08: ffffffff8175c06c R09: fffffbfff1bf9650
R10: dffffc0000000000 R11: fffffbfff1bf9650 R12: 1ffff9200050921b
R13: ffff88807757dc80 R14: 000000000000001b R15: ffffc900028490da
FS:  00007f7083b726c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f707c5ff000 CR3: 0000000023ae4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (449):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/29 07:25 upstream fe46a7dd189e 120789fd .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root kernel BUG in txLock
2026/02/14 03:09 upstream cee73b1e840c 1e62d198 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in txLock
2025/11/08 06:44 upstream da32d155f4a8 4e1406b4 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro #1 (corrupt fs)] [mounted in repro #2 (corrupt fs)] ci2-upstream-fs kernel BUG in txLock
2026/03/12 05:44 upstream b29fb8829bff 2d88ab01 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2026/03/12 01:58 upstream b29fb8829bff 2d88ab01 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2026/03/10 06:32 upstream 1f318b96cc84 6972f302 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/08 19:52 upstream 014441d1e4b2 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/08 06:56 upstream c23719abc330 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/05 20:47 upstream c107785c7e8d d20b04c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/28 08:25 upstream 4d349ee5c778 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/27 10:25 upstream 3f4a08e64442 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/26 22:08 upstream f4d0ec0aa20d ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/26 09:22 upstream d9d32e5bd5a4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/24 04:59 upstream 7dff99b35460 41d2fa6a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/22 12:31 upstream fa5c82f4d2bb 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/21 09:55 upstream a95f71ad3e2e 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/02/19 06:51 upstream c22e26bd0906 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/30 13:27 upstream 4d310797262f bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2025/10/09 09:08 upstream ec714e371f22 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in txLock
2024/03/28 05:04 upstream fe46a7dd189e 454571b6 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root kernel BUG in txLock
2026/03/13 04:15 upstream 8004279c41ad 2f7f359d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/12 09:07 upstream 80234b5ab240 2d88ab01 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/11 20:41 upstream b29fb8829bff 2d88ab01 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/11 07:09 upstream b4f0dd314b39 86914af9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/10 20:34 upstream 1f318b96cc84 4683d576 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/09 18:09 upstream 1f318b96cc84 176bead5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/09 06:40 upstream 014441d1e4b2 5cb44a80 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/08 23:18 upstream 014441d1e4b2 5cb44a80 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/08 11:17 upstream c23719abc330 5cb44a80 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/07 18:56 upstream 4ae12d8bd9a8 5cb44a80 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/04 15:53 upstream 0031c06807cf e6b6b96b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/04 09:52 upstream 0031c06807cf 4180d919 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/03 18:10 upstream af4e9ef3d784 4180d919 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/02 23:47 upstream 11439c4635ed b9dd6534 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/02 02:26 upstream 39c633261414 43249bac .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/01 06:13 upstream 2f9339c052bd 43249bac .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/28 22:47 upstream 2f9339c052bd 43249bac .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/28 16:29 upstream 4d349ee5c778 43249bac .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/28 09:40 upstream 4d349ee5c778 43249bac .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/27 05:16 upstream 3f4a08e64442 a2f13f71 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/27 00:47 upstream 3f4a08e64442 a2f13f71 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/26 19:43 upstream f4d0ec0aa20d ffa54287 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/26 15:53 upstream f4d0ec0aa20d ffa54287 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/25 13:42 upstream 7dff99b35460 c162cde9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/23 21:25 upstream 6de23f81a5e0 7c9658af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/23 00:04 upstream 189f164e573e 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/22 17:14 upstream 32a92f8c8932 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/22 04:11 upstream d79526b89571 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/21 20:23 upstream d79526b89571 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/21 11:00 upstream a95f71ad3e2e 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/21 02:01 upstream a95f71ad3e2e 741f5161 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/20 20:20 upstream 8bf22c33e7a1 741f5161 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/20 13:56 upstream 8bf22c33e7a1 17d780d6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/18 22:26 upstream 23b0f90ba871 77d4d919 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/02/23 02:50 linux-next d4906ae14a5f 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/02/21 03:04 linux-next d4906ae14a5f 741f5161 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/02/20 15:13 linux-next 44982d352c33 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/02/19 12:15 linux-next 50f68cc7be0a 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2024/04/03 17:10 linux-next 727900b675b7 fed899ed .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2024/04/02 01:52 linux-next a6bd6c933339 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/02/01 22:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
* Struck through repros no longer work on HEAD.