overlayfs: upper fs does not support tmpfile.
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: 20681 Comm: syz.8.3390 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:ffffc9000b136960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff8880552bb388 RCX: 0000000000080000
RDX: ffffc9001c640000 RSI: 0000000000004655 RDI: 0000000000000008
RBP: ffffc9000b137070 R08: ffffc9000b137380 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff8880552bb338 R14: 0000000000000009 R15: 0000000000000000
FS:  00007f351f1766c0(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2eac6b9f98 CR3: 0000000083752000 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_unlink+0x394/0x650 fs/namei.c:4586
 ovl_do_unlink fs/overlayfs/overlayfs.h:218 [inline]
 ovl_cleanup_locked fs/overlayfs/dir.c:36 [inline]
 ovl_cleanup+0x151/0x230 fs/overlayfs/dir.c:56
 ovl_check_rename_whiteout fs/overlayfs/super.c:607 [inline]
 ovl_make_workdir fs/overlayfs/super.c:704 [inline]
 ovl_get_workdir+0xabd/0x17c0 fs/overlayfs/super.c:827
 ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406
 vfs_get_super fs/super.c:1325 [inline]
 get_tree_nodev+0xbb/0x150 fs/super.c:1344
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4321
 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: 0033:0x7f351e38ebe9
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:00007f351f176038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f351e5b5fa0 RCX: 00007f351e38ebe9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f351e411e19 R08: 0000200000002700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f351e5b6038 R14: 00007f351e5b5fa0 R15: 00007ffe459d8c48
 </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:ffffc9000b136960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff8880552bb388 RCX: 0000000000080000
RDX: ffffc9001c640000 RSI: 0000000000004655 RDI: 0000000000000008
RBP: ffffc9000b137070 R08: ffffc9000b137380 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff8880552bb338 R14: 0000000000000009 R15: 0000000000000000
FS:  00007f351f1766c0(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2eac6b9f98 CR3: 0000000083752000 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