BUG at fs/jfs/jfs_txnmgr.c:663 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:663!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 1507 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663
Code: e9 c5 f7 ff ff e8 05 8e 66 fe 48 c7 c7 e0 eb 8b 8b 48 c7 c6 d9 e7 8b 8b ba 97 02 00 00 48 c7 c1 00 ed 8b 8b e8 56 ec c8 fd 90 <0f> 0b e8 de 8d 66 fe 48 c7 c7 c0 ed 8b 8b e8 42 ec c8 fd 48 c7 c7
RSP: 0000:ffffc90006e66e80 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 6ec17e2f1a5d7f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006e66fb0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000dccd81 R12: 0000000000000000
R13: ffffc90003422000 R14: 0000000000000000 R15: 1ffff92000684400
FS:  0000000000000000(0000) GS:ffff88812611d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f668d2cf000 CR3: 000000005c930000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f60 fs/jfs/jfs_imap.c:654
 txCommit+0x83a/0x54a0 fs/jfs/jfs_txnmgr.c:1257
 jfs_commit_inode+0x2ef/0x530 fs/jfs/inode.c:114
 jfs_write_inode+0x145/0x220 fs/jfs/inode.c:138
 write_inode fs/fs-writeback.c:1607 [inline]
 __writeback_single_inode+0x6af/0xf90 fs/fs-writeback.c:1850
 writeback_sb_inodes+0x9db/0x1ab0 fs/fs-writeback.c:2079
 wb_writeback+0x41c/0xad0 fs/fs-writeback.c:2264
 wb_do_writeback fs/fs-writeback.c:2432 [inline]
 wb_workfn+0x437/0x10f0 fs/fs-writeback.c:2477
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663
Code: e9 c5 f7 ff ff e8 05 8e 66 fe 48 c7 c7 e0 eb 8b 8b 48 c7 c6 d9 e7 8b 8b ba 97 02 00 00 48 c7 c1 00 ed 8b 8b e8 56 ec c8 fd 90 <0f> 0b e8 de 8d 66 fe 48 c7 c7 c0 ed 8b 8b e8 42 ec c8 fd 48 c7 c7
RSP: 0000:ffffc90006e66e80 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 6ec17e2f1a5d7f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006e66fb0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000dccd81 R12: 0000000000000000
R13: ffffc90003422000 R14: 0000000000000000 R15: 1ffff92000684400
FS:  0000000000000000(0000) GS:ffff88812611d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f668d358000 CR3: 0000000041d5a000 CR4: 00000000003526f0