BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:662!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5928 Comm: syz.1.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:txLock+0x1ce2/0x20b0 fs/jfs/jfs_txnmgr.c:662
Code: fe e9 29 f8 ff ff e8 ad 0c 80 fe 48 c7 c7 40 1f 04 8b 48 c7 c6 39 1b 04 8b ba 96 02 00 00 48 c7 c1 40 20 04 8b e8 ee 68 73 07 <0f> 0b e8 87 0c 80 fe 48 c7 c7 00 21 04 8b e8 db 68 73 07 48 c7 c7
RSP: 0018:ffffc90004caf7c0 EFLAGS: 00010246
RAX: 000000000000002b RBX: ffffc9000288a000 RCX: b3cce0572a40b500
RDX: ffffc9000e35f000 RSI: 000000000002cdb8 RDI: 000000000002cdb9
RBP: ffffc90004caf908 R08: ffffc90004caf3c7 R09: 1ffff92000995e78
R10: dffffc0000000000 R11: fffff52000995e79 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff92000511400
FS:  00007f23144db6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc3e1dbc000 CR3: 0000000024b37000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 diWrite+0x43f/0x1f20 fs/jfs/jfs_imap.c:654
 txCommit+0x86a/0x5290 fs/jfs/jfs_txnmgr.c:1256
 jfs_mkdir+0x8c5/0xac0 fs/jfs/namei.c:290
 vfs_mkdir+0x296/0x440 fs/namei.c:4121
 do_mkdirat+0x1dc/0x450 fs/namei.c:4144
 __do_sys_mkdirat fs/namei.c:4159 [inline]
 __se_sys_mkdirat fs/namei.c:4157 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f231359b607
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:00007f23144dae58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f23144daee0 RCX: 00007f231359b607
RDX: 00000000000001ff RSI: 0000200000000300 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000200000000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000300
R13: 00007f23144daea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1ce2/0x20b0 fs/jfs/jfs_txnmgr.c:662
Code: fe e9 29 f8 ff ff e8 ad 0c 80 fe 48 c7 c7 40 1f 04 8b 48 c7 c6 39 1b 04 8b ba 96 02 00 00 48 c7 c1 40 20 04 8b e8 ee 68 73 07 <0f> 0b e8 87 0c 80 fe 48 c7 c7 00 21 04 8b e8 db 68 73 07 48 c7 c7
RSP: 0018:ffffc90004caf7c0 EFLAGS: 00010246
RAX: 000000000000002b RBX: ffffc9000288a000 RCX: b3cce0572a40b500
RDX: ffffc9000e35f000 RSI: 000000000002cdb8 RDI: 000000000002cdb9
RBP: ffffc90004caf908 R08: ffffc90004caf3c7 R09: 1ffff92000995e78
R10: dffffc0000000000 R11: fffff52000995e79 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff92000511400
FS:  00007f23144db6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005587008b15f8 CR3: 0000000024b37000 CR4: 00000000003506e0