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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: 671d, last: 1d03h
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 9 5d00h 428d 0/3 upstream: reported C repro on 2024/11/25 09:43
linux-6.6 kernel BUG in txLock origin:upstream -1 C 6 16d 34d 0/2 upstream: reported C repro on 2025/12/24 20:44
linux-5.15 kernel BUG in txLock -1 1 873d 873d 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 754d 871d 25/29 fixed on 2024/02/16 19:40
linux-6.1 kernel BUG in txLock origin:upstream -1 C 12 15d 317d 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 (324):
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
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
2026/01/27 02:16 upstream fcb70a56f4d8 efb3e894 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/26 05:21 upstream 023777797472 55756628 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/23 16:13 upstream c072629f05d7 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/22 13:40 upstream a66191c590b3 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/20 02:04 upstream 24d479d26b25 572effc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/19 21:23 upstream 24d479d26b25 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2026/01/18 14:25 upstream d12453c7e281 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/18 04:12 upstream d3eeb99bbc99 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txLock
2026/01/15 16:45 upstream 944aacb68baf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/14 16:13 upstream c537e12daeec d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/14 01:37 upstream b54345928fa1 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/13 23:27 upstream b54345928fa1 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/13 16:35 upstream b71e635feefc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/13 14:30 upstream b71e635feefc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/12 07:46 upstream 9c7ef209cd0f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txLock
2026/01/11 14:30 upstream 755bc1335e3b d6526ea3 .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
2026/01/26 03:18 upstream 023777797472 02bac031 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/24 21:08 upstream 62085877ae65 40acda8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/24 18:50 upstream 62085877ae65 40acda8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/24 02:34 upstream c133687c2eae 4f25b9b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/23 02:05 upstream a66191c590b3 82c9c083 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/22 16:29 upstream a66191c590b3 a16aed1d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/21 03:49 upstream c03e9c42ae8f 2494e18d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/20 13:05 upstream 24d479d26b25 572effc1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/20 06:54 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/20 03:47 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/19 06:11 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/18 10:48 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/18 02:36 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/16 09:45 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/16 05:20 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/15 18:03 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/15 09:08 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/14 14:27 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/14 10:35 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/14 08:42 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/14 07:03 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/12 23:12 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/12 16:06 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/12 05:50 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/11 23:26 upstream 54e82e93ca93 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txLock
2026/01/15 20:02 linux-next 9b7977f9e39b d6526ea3 .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
2026/01/20 19:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 572effc1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/18 11:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/18 09:35 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/17 04:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/15 15:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/12 12:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txLock
2026/01/11 17:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .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.