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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: 745d, last: 6h16m
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 15 2d08h 503d 0/3 upstream: reported C repro on 2024/11/25 09:43
linux-6.6 kernel BUG in txLock origin:upstream -1 C error 7 16d 109d 0/2 upstream: reported C repro on 2025/12/24 20:44
linux-5.15 kernel BUG in txLock -1 1 948d 948d 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 828d 946d 25/29 fixed on 2024/02/16 19:40
linux-6.1 kernel BUG in txLock origin:upstream -1 C error 16 7d12h 392d 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 (556):
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
2026/04/12 19:46 upstream f5459048c38a 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/12 10:22 upstream e753c16cb3dd 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/12 08:08 upstream e753c16cb3dd 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/12 06:54 upstream e753c16cb3dd 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/10 10:34 upstream 9a9c8ce300cd 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/09 06:41 upstream 7f87a5ea75f0 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/08 00:02 upstream 3036cd0d3328 2c961e87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/07 20:00 upstream bfe62a454542 628666c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2026/04/06 05:47 upstream 1791c390149f 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/06 01:42 upstream 1791c390149f 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/03 21:09 upstream d8a9a4b11a13 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/03 15:25 upstream d8a9a4b11a13 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/03 02:55 upstream 5619b098e2fb 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/04/02 04:32 upstream 9147566d8016 0cb124d5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/31 06:02 upstream d0c3bcd5b897 d0af506e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/30 12:56 upstream 7aaa8047eafd dcaebc52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/30 09:19 upstream 7aaa8047eafd dcaebc52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/28 12:03 upstream 7df48e363130 356bdfc9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/28 03:35 upstream 7df48e363130 356bdfc9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/28 01:27 upstream 7df48e363130 356bdfc9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 22:11 upstream 7df48e363130 74a13a23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 21:00 upstream 46b513250491 74a13a23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 17:28 upstream 46b513250491 74a13a23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 10:07 upstream 46b513250491 766b6434 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 08:33 upstream 46b513250491 766b6434 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/27 06:43 upstream 46b513250491 766b6434 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/03/26 23:21 upstream 0138af2472df 766b6434 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs 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
2026/04/12 03:08 upstream e753c16cb3dd 38c8e246 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/11 04:31 upstream 7c6c4ed80b87 38c8e246 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/11 00:18 upstream 7c6c4ed80b87 38c8e246 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/09 14:33 upstream 7f87a5ea75f0 38c8e246 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/08 11:03 upstream 3036cd0d3328 2c961e87 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/08 07:26 upstream 3036cd0d3328 2c961e87 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/08 07:26 upstream 3036cd0d3328 2c961e87 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/07 16:56 upstream bfe62a454542 628666c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/05 09:38 upstream 3aae9383f42f 4440e7c2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/05 02:00 upstream 3aae9383f42f 4440e7c2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/02 08:49 upstream 9147566d8016 0cb124d5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/01 08:13 upstream dbf00d8d23b4 fb8b2c26 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/31 23:09 upstream dbf00d8d23b4 aeea1c72 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/31 09:19 upstream d0c3bcd5b897 d0af506e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/28 07:22 upstream 7df48e363130 f9ef2ec1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/28 04:58 upstream 7df48e363130 f9ef2ec1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/27 15:01 upstream 46b513250491 f9ef2ec1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/03/26 16:53 upstream 0138af2472df 4b3d9a38 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/04/06 12:53 linux-next cc13002a9f98 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/04/04 00:39 linux-next cc13002a9f98 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txLock
2026/03/27 14:00 linux-next e77a5a5cfe43 50cdcaa1 .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.