general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 0 PID: 13951 Comm: ext4lazyinit Not tainted 6.1.129-syzkaller-00055-gca24c52e3c25 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fe d1 cf ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 e1 d1 cf ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000cd7ba0 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff888124183cc0
RDX: 0000000000000000 RSI: 000000000000063f RDI: ffffffff8668fa0d
RBP: ffffc90000cd7c70 R08: ffff8881006a71f8 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008
R13: dffffc0000000000 R14: ffff8881006a71f8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e1c1705a0 CR3: 000000012f763000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_init_inode_table+0x3de/0x810 fs/ext4/ialloc.c:1598
 ext4_run_li_request fs/ext4/super.c:3671 [inline]
 ext4_lazyinit_thread+0x792/0x1650 fs/ext4/super.c:3762
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231
Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fe d1 cf ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 e1 d1 cf ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc90000cd7ba0 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff888124183cc0
RDX: 0000000000000000 RSI: 000000000000063f RDI: ffffffff8668fa0d
RBP: ffffc90000cd7c70 R08: ffff8881006a71f8 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008
R13: dffffc0000000000 R14: ffff8881006a71f8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc915ddf68 CR3: 0000000123a33000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	88 ff                	mov    %bh,%bh
   2:	49 8d 5e 30          	lea    0x30(%r14),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 fe d1 cf ff       	call   0xffcfd21a
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 38          	add    $0x38,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 e1 d1 cf ff       	call   0xffcfd21a
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	4c                   	rex.WR