ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode.
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 11173 Comm: syz.4.775 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3407 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x3305/0x5c60 fs/ocfs2/dir.c:4271
Code: 00 00 e8 2e bd 0c fe e9 ba 06 00 00 e8 24 bd 0c fe e9 4f 01 00 00 e8 1a bd 0c fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004bceb00 EFLAGS: 00010212
RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000040000
RDX: ffffc9000cb68000 RSI: 00000000000008ec RDI: 0000000000000008
RBP: ffffc90004bcf310 R08: ffffffff8388008b R09: ffffffff838857c7
R10: 0000000000000002 R11: ffff88802b159e00 R12: dffffc0000000000
R13: ffff88805d204178 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f7c43f076c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e7fde2c950 CR3: 0000000062ba2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ocfs2_mknod+0xcaf/0x2b40 fs/ocfs2/namei.c:292
 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672
 lookup_open fs/namei.c:3595 [inline]
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0x1c05/0x3590 fs/namei.c:3930
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c4317e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7c43f07038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7c43335f80 RCX: 00007f7c4317e719
RDX: 0000000000147042 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f7c431f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7c43335f80 R15: 00007ffc152d5ba8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3407 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x3305/0x5c60 fs/ocfs2/dir.c:4271
Code: 00 00 e8 2e bd 0c fe e9 ba 06 00 00 e8 24 bd 0c fe e9 4f 01 00 00 e8 1a bd 0c fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004bceb00 EFLAGS: 00010212
RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000040000
RDX: ffffc9000cb68000 RSI: 00000000000008ec RDI: 0000000000000008
RBP: ffffc90004bcf310 R08: ffffffff8388008b R09: ffffffff838857c7
R10: 0000000000000002 R11: ffff88802b159e00 R12: dffffc0000000000
R13: ffff88805d204178 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f7c43f076c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee5ffff CR3: 0000000062ba2000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	e8 2e bd 0c fe       	call   0xfe0cbd35
   7:	e9 ba 06 00 00       	jmp    0x6c6
   c:	e8 24 bd 0c fe       	call   0xfe0cbd35
  11:	e9 4f 01 00 00       	jmp    0x165
  16:	e8 1a bd 0c fe       	call   0xfe0cbd35
  1b:	49 8d 7f 08          	lea    0x8(%r15),%rdi
  1f:	49 8d 5f 09          	lea    0x9(%r15),%rbx
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 bd 23 00 00    	jne    0x23f4
  37:	48 89 d8             	mov    %rbx,%rax
  3a:	48 c1 e8 03          	shr    $0x3,%rax
  3e:	42                   	rex.X
  3f:	0f                   	.byte 0xf