Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 5863 Comm: syz-executor Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3432 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f41/0x5450 fs/ocfs2/dir.c:4296
Code: ca 8b e8 72 9b 19 00 e9 fd 11 00 00 e8 d8 1a 25 fe e9 a7 02 00 00 e8 ce 1a 25 fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 41 20 00 00 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004147080 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88805a64b388 RCX: ffff888026ecda00
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008
RBP: ffffc90004147790 R08: ffffc90004147aa0 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff88805a64b338 R14: 0000000000000009 R15: 0000000000000000
FS:  000055556c34f500(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556c37a648 CR3: 000000002fa8e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __ocfs2_prepare_orphan_dir+0x145/0x2c0 fs/ocfs2/namei.c:2179
 ocfs2_prepare_orphan_dir+0xf9/0x3f0 fs/ocfs2/namei.c:2224
 ocfs2_unlink+0x90d/0x1940 fs/ocfs2/namei.c:962
 vfs_rmdir+0x3b7/0x520 fs/namei.c:4461
 do_rmdir+0x25f/0x550 fs/namei.c:4516
 __do_sys_unlinkat fs/namei.c:4690 [inline]
 __se_sys_unlinkat fs/namei.c:4684 [inline]
 __x64_sys_unlinkat+0xc2/0xf0 fs/namei.c:4684
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f06d338e1c7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 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:00007ffca0433cb8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f06d338e1c7
RDX: 0000000000000200 RSI: 00007ffca0434e60 RDI: 00000000ffffff9c
RBP: 00007f06d3411c05 R08: 000055556c37266b R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007ffca0434e60
R13: 00007f06d3411c05 R14: 0000000000037445 R15: 00007ffca0437020
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3432 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f41/0x5450 fs/ocfs2/dir.c:4296
Code: ca 8b e8 72 9b 19 00 e9 fd 11 00 00 e8 d8 1a 25 fe e9 a7 02 00 00 e8 ce 1a 25 fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 41 20 00 00 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004147080 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88805a64b388 RCX: ffff888026ecda00
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008
RBP: ffffc90004147790 R08: ffffc90004147aa0 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff88805a64b338 R14: 0000000000000009 R15: 0000000000000000
FS:  000055556c34f500(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558db435c8 CR3: 000000002fa8e000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	ca 8b e8             	lret   $0xe88b
   3:	72 9b                	jb     0xffffffa0
   5:	19 00                	sbb    %eax,(%rax)
   7:	e9 fd 11 00 00       	jmp    0x1209
   c:	e8 d8 1a 25 fe       	call   0xfe251ae9
  11:	e9 a7 02 00 00       	jmp    0x2bd
  16:	e8 ce 1a 25 fe       	call   0xfe251ae9
  1b:	49 8d 7f 08          	lea    0x8(%r15),%rdi
  1f:	4d 8d 77 09          	lea    0x9(%r15),%r14
  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 41 20 00 00    	jne    0x2078
  37:	4c 89 f0             	mov    %r14,%rax
  3a:	48 c1 e8 03          	shr    $0x3,%rax
  3e:	42                   	rex.X
  3f:	0f                   	.byte 0xf