BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
------------[ cut here ]-[ 1526.019657][T18844] ------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 18844 Comm: syz.7.1128 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 b7 03 81 fe 48 c7 c7 a0 4a 24 8b 48 c7 c6 99 46 24 8b ba 96 02 00 00 48 c7 c1 a0 4b 24 8b e8 b8 92 e9 fd 90 <0f> 0b e8 90 03 81 fe 48 c7 c7 60 4c 24 8b e8 a4 92 e9 fd 48 c7 c7
RSP: 0018:ffffc90004caf780 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 211fafd6eaa0db00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004caf8a8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000995e95 R12: 1ffff920006a5200
R13: ffffc90003529000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd25376d6c0(0000) GS:ffff888126ef6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd24c34c000 CR3: 000000002b6c2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f40 fs/jfs/jfs_imap.c:654
 txCommit+0x852/0x5430 fs/jfs/jfs_txnmgr.c:1256
 jfs_mkdir+0x856/0xa70 fs/jfs/namei.c:290
 vfs_mkdir+0x306/0x510 fs/namei.c:4453
 do_mkdirat+0x247/0x590 fs/namei.c:4486
 __do_sys_mkdirat fs/namei.c:4503 [inline]
 __se_sys_mkdirat fs/namei.c:4501 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4501
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd25552de97
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd25376ce68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd25376cef0 RCX: 00007fd25552de97
RDX: 00000000000001ff RSI: 0000200000000080 RDI: 00000000ffffff9c
RBP: 0000200000000000 R08: 0000200000000080 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000200000000080
R13: 00007fd25376ceb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 b7 03 81 fe 48 c7 c7 a0 4a 24 8b 48 c7 c6 99 46 24 8b ba 96 02 00 00 48 c7 c1 a0 4b 24 8b e8 b8 92 e9 fd 90 <0f> 0b e8 90 03 81 fe 48 c7 c7 60 4c 24 8b e8 a4 92 e9 fd 48 c7 c7
RSP: 0018:ffffc90004caf780 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 211fafd6eaa0db00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004caf8a8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000995e95 R12: 1ffff920006a5200
R13: ffffc90003529000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd25376d6c0(0000) GS:ffff888126df6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd24bede000 CR3: 000000002b6c2000 CR4: 00000000003526f0