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: 10032 Comm: syz.1.473 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 3e e8 6f fe 48 c7 c7 20 e1 8a 8b 48 c7 c6 19 dd 8a 8b ba 96 02 00 00 48 c7 c1 40 e2 8a 8b e8 7f d3 d2 fd 90 <0f> 0b e8 17 e8 6f fe 48 c7 c7 00 e3 8a 8b e8 6b d3 d2 fd 48 c7 c7
RSP: 0000:ffffc90005e870e0 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 1f9ec81f5cebd700
RDX: ffffc90013a13000 RSI: 0000000000003ae6 RDI: 0000000000003ae7
RBP: ffffc90005e87218 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000bd0dcd R12: 1ffff9200069a400
R13: ffffc900034d2000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f48e0ecd6c0(0000) GS:ffff888126339000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b11384000 CR3: 0000000027e26000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dtSplitRoot+0x36f/0x16c0 fs/jfs/jfs_dtree.c:1927
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xf19/0x5f10 fs/jfs/jfs_dtree.c:871
 jfs_create+0x75b/0xb10 fs/jfs/namei.c:138
 lookup_open fs/namei.c:4483 [inline]
 open_last_lookups fs/namei.c:4583 [inline]
 path_openat+0x13b4/0x38a0 fs/namei.c:4827
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_creat fs/open.c:1450 [inline]
 __se_sys_creat fs/open.c:1444 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1444
 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: 0033:0x7f48e2c9c799
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:00007f48e0ecd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f48e2f16090 RCX: 00007f48e2c9c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f48e2d32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f48e2f16128 R14: 00007f48e2f16090 R15: 00007fff07672ab8
 </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 3e e8 6f fe 48 c7 c7 20 e1 8a 8b 48 c7 c6 19 dd 8a 8b ba 96 02 00 00 48 c7 c1 40 e2 8a 8b e8 7f d3 d2 fd 90 <0f> 0b e8 17 e8 6f fe 48 c7 c7 00 e3 8a 8b e8 6b d3 d2 fd 48 c7 c7
RSP: 0000:ffffc90005e870e0 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 1f9ec81f5cebd700
RDX: ffffc90013a13000 RSI: 0000000000003ae6 RDI: 0000000000003ae7
RBP: ffffc90005e87218 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000bd0dcd R12: 1ffff9200069a400
R13: ffffc900034d2000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f48e0ecd6c0(0000) GS:ffff888126339000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b11384000 CR3: 0000000027e26000 CR4: 00000000003526f0