BUG at fs/jfs/jfs_txnmgr.[  871.073923][T16434] 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: 1 UID: 0 PID: 16434 Comm: syz.2.1643 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:txLock+0x1b92/0x1cc0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 8e e0 6f fe 48 c7 c7 20 df 8a 8b 48 c7 c6 19 db 8a 8b ba 96 02 00 00 48 c7 c1 40 e0 8a 8b e8 df c3 d2 fd 90 <0f> 0b e8 67 e0 6f fe 48 c7 c7 00 e1 8a 8b e8 cb c3 d2 fd 48 c7 c7
RSP: 0018:ffffc90003f9f740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: e606fb6dec922600
RDX: ffffc9001265c000 RSI: 0000000000002b86 RDI: 0000000000002b87
RBP: ffffc90003f9f868 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520007f3e99 R12: 1ffff9200069a400
R13: ffffc900034d2000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd4446356c0(0000) GS:ffff888126436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f439554a000 CR3: 0000000039f74000 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:291
 vfs_mkdir+0x40b/0x630 fs/namei.c:5233
 filename_mkdirat+0x289/0x520 fs/namei.c:5266
 __do_sys_mkdirat fs/namei.c:5287 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5284
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd4463fb607
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 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:00007fd444634e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd444634ee0 RCX: 00007fd4463fb607
RDX: 00000000000001ff RSI: 0000200000000300 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000200000000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000300
R13: 00007fd444634ea0 R14: 0000000000000000 R15: 0000000000000000
 </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 8e e0 6f fe 48 c7 c7 20 df 8a 8b 48 c7 c6 19 db 8a 8b ba 96 02 00 00 48 c7 c1 40 e0 8a 8b e8 df c3 d2 fd 90 <0f> 0b e8 67 e0 6f fe 48 c7 c7 00 e1 8a 8b e8 cb c3 d2 fd 48 c7 c7
RSP: 0018:ffffc90003f9f740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: e606fb6dec922600
RDX: ffffc9001265c000 RSI: 0000000000002b86 RDI: 0000000000002b87
RBP: ffffc90003f9f868 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520007f3e99 R12: 1ffff9200069a400
R13: ffffc900034d2000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd4446356c0(0000) GS:ffff888126436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f439554a000 CR3: 0000000039f74000 CR4: 00000000003526f0