general protection fault, probably for non-canonical address 0xdffffc000000003d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001e8-0x00000000000001ef]
CPU: 0 PID: 277 Comm: jfsCommit Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__lock_acquire+0xe8/0x7c60 kernel/locking/lockdep.c:4882
Code: 42 0f b6 04 00 84 c0 0f 85 2f 65 00 00 83 3d c2 a6 0d 0c 00 0f 84 a8 27 00 00 83 3d 31 ba a2 0a 00 74 29 48 89 d8 48 c1 e8 03 <42> 80 3c 00 00 74 12 48 89 df e8 b9 2b 60 00 49 b8 00 00 00 00 00
RSP: 0018:ffffc90002d5f9a0 EFLAGS: 00010002
RAX: 000000000000003d RBX: 00000000000001e8 RCX: 1ffff920005abf58
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001e8
RBP: ffffc90002d5fbf0 R08: dffffc0000000000 R09: 0000000000000001
R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: 0000000000000001
R13: ffff88801d553b80 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32617ff8 CR3: 0000000062bbd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0x9f/0xe0 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:388 [inline]
 txLazyCommit fs/jfs/jfs_txnmgr.c:2702 [inline]
 jfs_lazycommit+0x496/0xb20 fs/jfs/jfs_txnmgr.c:2766
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace e8847f62d351dc60 ]---
RIP: 0010:__lock_acquire+0xe8/0x7c60 kernel/locking/lockdep.c:4882
Code: 42 0f b6 04 00 84 c0 0f 85 2f 65 00 00 83 3d c2 a6 0d 0c 00 0f 84 a8 27 00 00 83 3d 31 ba a2 0a 00 74 29 48 89 d8 48 c1 e8 03 <42> 80 3c 00 00 74 12 48 89 df e8 b9 2b 60 00 49 b8 00 00 00 00 00
RSP: 0018:ffffc90002d5f9a0 EFLAGS: 00010002
RAX: 000000000000003d RBX: 00000000000001e8 RCX: 1ffff920005abf58
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001e8
RBP: ffffc90002d5fbf0 R08: dffffc0000000000 R09: 0000000000000001
R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: 0000000000000001
R13: ffff88801d553b80 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32617ff8 CR3: 0000000062bbd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	42 0f b6 04 00       	movzbl (%rax,%r8,1),%eax
   5:	84 c0                	test   %al,%al
   7:	0f 85 2f 65 00 00    	jne    0x653c
   d:	83 3d c2 a6 0d 0c 00 	cmpl   $0x0,0xc0da6c2(%rip)        # 0xc0da6d6
  14:	0f 84 a8 27 00 00    	je     0x27c2
  1a:	83 3d 31 ba a2 0a 00 	cmpl   $0x0,0xaa2ba31(%rip)        # 0xaa2ba52
  21:	74 29                	je     0x4c
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 00 00       	cmpb   $0x0,(%rax,%r8,1) <-- trapping instruction
  2f:	74 12                	je     0x43
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 b9 2b 60 00       	call   0x602bf2
  39:	49                   	rex.WB
  3a:	b8 00 00 00 00       	mov    $0x0,%eax