syzbot


kernel BUG in txUnlock

Status: upstream: reported C repro on 2025/06/20 22:07
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+4d1764d69ed762160c10@syzkaller.appspotmail.com
First crash: 114d, last: 6h51m
Bug presence (1)
Date Name Commit Repro Result
2025/06/25 upstream (ToT) c4dce0c094a8 C [report] kernel BUG in txUnlock
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 kernel BUG in txUnlock origin:upstream -1 C error 1934 1d03h 862d 0/3 upstream: reported C repro on 2023/06/04 02:49
linux-4.19 kernel BUG in txUnlock jfs -1 C error 7 981d 1024d 0/1 upstream: reported C repro on 2022/12/24 18:38
upstream kernel BUG in txUnlock jfs -1 C error 33656 28m 1108d 0/29 upstream: reported C repro on 2022/10/01 14:27
linux-6.1 kernel BUG in txUnlock origin:upstream -1 C 3904 7h02m 862d 0/3 upstream: reported C repro on 2023/06/04 03:57
linux-4.14 kernel BUG in txUnlock jfs -1 C 2 953d 1016d 0/1 upstream: reported C repro on 2023/01/01 13:47

Sample crash report:
BUG at fs/jfs/jfs_txnmgr.c:931 assert(mp->nohomeok > 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:931!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 111 Comm: jfsCommit Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:txUnlock+0xc87/0xcb0 fs/jfs/jfs_txnmgr.c:931
Code: 5f d8 58 07 0f 0b e8 28 83 83 fe 48 c7 c7 80 14 e4 8a 48 c7 c6 79 10 e4 8a ba a3 03 00 00 48 c7 c1 60 21 e4 8a e8 39 d8 58 07 <0f> 0b e8 02 83 83 fe 48 c7 c7 80 14 e4 8a 48 c7 c6 79 10 e4 8a ba
RSP: 0018:ffffc90002ca7d08 EFLAGS: 00010246
RAX: 0000000000000037 RBX: 0000000000001000 RCX: 4e55a7866e378e00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000281a1b0 R08: ffffc90002ca7a07 R09: 1ffff92000594f40
R10: dffffc0000000000 R11: fffff52000594f41 R12: ffff888024ece4d8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888020e50694
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30861aa000 CR3: 000000007b926000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 txLazyCommit fs/jfs/jfs_txnmgr.c:2682 [inline]
 jfs_lazycommit+0x570/0xa60 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txUnlock+0xc87/0xcb0 fs/jfs/jfs_txnmgr.c:931
Code: 5f d8 58 07 0f 0b e8 28 83 83 fe 48 c7 c7 80 14 e4 8a 48 c7 c6 79 10 e4 8a ba a3 03 00 00 48 c7 c1 60 21 e4 8a e8 39 d8 58 07 <0f> 0b e8 02 83 83 fe 48 c7 c7 80 14 e4 8a 48 c7 c6 79 10 e4 8a ba
RSP: 0018:ffffc90002ca7d08 EFLAGS: 00010246
RAX: 0000000000000037 RBX: 0000000000001000 RCX: 4e55a7866e378e00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000281a1b0 R08: ffffc90002ca7a07 R09: 1ffff92000594f40
R10: dffffc0000000000 R11: fffff52000594f41 R12: ffff888024ece4d8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888020e50694
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005606b1ee8168 CR3: 000000002db29000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (512):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/21 22:14 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/13 12:03 linux-6.6.y 655054d2c3c1 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/13 00:58 linux-6.6.y 655054d2c3c1 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/12 12:54 linux-6.6.y 655054d2c3c1 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/12 12:51 linux-6.6.y 655054d2c3c1 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/10 00:59 linux-6.6.y e617101e5626 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/09 11:26 linux-6.6.y e617101e5626 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/07 23:42 linux-6.6.y e617101e5626 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/07 03:04 linux-6.6.y e617101e5626 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/07 03:04 linux-6.6.y e617101e5626 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/06 12:38 linux-6.6.y e617101e5626 91305dbe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/02 14:38 linux-6.6.y f34f16e5c632 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/02 00:43 linux-6.6.y 147338df3487 267f56c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/01 11:40 linux-6.6.y 147338df3487 a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/10/01 11:38 linux-6.6.y 147338df3487 a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/30 16:35 linux-6.6.y 147338df3487 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/30 07:28 linux-6.6.y 147338df3487 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/29 13:07 linux-6.6.y 147338df3487 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/26 20:04 linux-6.6.y 147338df3487 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/25 11:59 linux-6.6.y 147338df3487 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/25 11:57 linux-6.6.y 147338df3487 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/24 05:41 linux-6.6.y af1544b5d072 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/23 17:57 linux-6.6.y af1544b5d072 e667a34f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/22 10:59 linux-6.6.y af1544b5d072 0ac7291c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/19 17:57 linux-6.6.y af1544b5d072 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/19 12:26 linux-6.6.y 60a9e718726f 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/19 12:25 linux-6.6.y 60a9e718726f 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/19 03:46 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/19 02:23 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/18 19:52 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/18 10:30 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/18 06:51 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/17 07:20 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/16 09:34 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/15 08:48 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/15 06:50 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/15 04:27 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/14 18:38 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/14 10:11 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/11 20:32 linux-6.6.y 60a9e718726f e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/11 18:45 linux-6.6.y 60a9e718726f fdeaa69b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/11 18:42 linux-6.6.y 60a9e718726f fdeaa69b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/10 01:40 linux-6.6.y fe9731e10004 fdeaa69b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/09 19:46 linux-6.6.y fe9731e10004 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/09/08 05:25 linux-6.6.y 355bd0b51d2f d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
2025/06/20 22:07 linux-6.6.y 6282921b6825 804b3919 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in txUnlock
* Struck through repros no longer work on HEAD.