BUG at fs/jfs/jfs_txnmgr.c:662 assert(las[  211.918149][ T7096] BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 7096 Comm: syz.2.204 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:txLock+0x1b92/0x1cc0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 fe c6 75 fe 48 c7 c7 20 61 6a 8b 48 c7 c6 19 5d 6a 8b ba 96 02 00 00 48 c7 c1 40 62 6a 8b e8 5f ec d9 fd 90 <0f> 0b e8 d7 c6 75 fe 48 c7 c7 00 63 6a 8b e8 4b ec d9 fd 48 c7 c7
RSP: 0018:ffffc900048af740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 5bc6c789314e6900
RDX: ffffc9000efbc000 RSI: 0000000000002f0a RDI: 0000000000002f0b
RBP: ffffc900048af868 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000915e99 R12: 1ffff920006b7400
R13: ffffc900035ba000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fcfa14e56c0(0000) GS:ffff8881265c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555bd408d740 CR3: 000000003bce2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f40 fs/jfs/jfs_imap.c:654
 txCommit+0x869/0x5410 fs/jfs/jfs_txnmgr.c:1256
 jfs_mkdir+0x8e9/0xb00 fs/jfs/namei.c:290
 vfs_mkdir+0x75d/0x870 fs/namei.c:5139
 do_mkdirat+0x281/0x4c0 fs/namei.c:5173
 __do_sys_mkdir fs/namei.c:5200 [inline]
 __se_sys_mkdir fs/namei.c:5198 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:5198
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcfa32aaeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcfa14e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fcfa3526090 RCX: 00007fcfa32aaeb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000004c0
RBP: 00007fcfa3318c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcfa3526128 R14: 00007fcfa3526090 R15: 00007ffebabccc28
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1b92/0x1cc0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 fe c6 75 fe 48 c7 c7 20 61 6a 8b 48 c7 c6 19 5d 6a 8b ba 96 02 00 00 48 c7 c1 40 62 6a 8b e8 5f ec d9 fd 90 <0f> 0b e8 d7 c6 75 fe 48 c7 c7 00 63 6a 8b e8 4b ec d9 fd 48 c7 c7
RSP: 0018:ffffc900048af740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 5bc6c789314e6900
RDX: ffffc9000efbc000 RSI: 0000000000002f0a RDI: 0000000000002f0b
RBP: ffffc900048af868 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000915e99 R12: 1ffff920006b7400
R13: ffffc900035ba000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fcfa14e56c0(0000) GS:ffff8881265c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555bd408d740 CR3: 000000003bce2000 CR4: 00000000003526f0