BUG: kernel NULL pointer dereference, address: 0000000000000069
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000000117866067 P4D 8000000117866067 PUD 10ac98067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 1 UID: 0 PID: 4050 Comm: syz.0.15 Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:file_inode include/linux/fs.h:1123 [inline]
RIP: 0010:ovl_real_fdget_path fs/overlayfs/file.c:108 [inline]
RIP: 0010:ovl_real_fdget+0x8e/0x110 fs/overlayfs/file.c:144
Code: 87 ff ff 41 89 c7 85 c0 75 53 48 89 e6 48 89 df e8 b7 a9 ff ff 49 8b 44 24 60 48 8b 38 49 89 3e 48 8b 44 24 08 48 85 c0 74 2d <48> 8b 4f 68 48 3b 48 68 75 4c 41 8b 74 24 70 8b 47 70 31 f0 45 31
RSP: 0018:ffffc9000692fe08 EFLAGS: 00010282
RAX: ffff88810e7b9270 RBX: ffff88810e7b9138 RCX: ffff88810e7b9270
RDX: 0000000000000000 RSI: ffffc9000692fe08 RDI: 0000000000000001
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff817eea30 R12: ffff88810a32ac00
R13: 000000000000001e R14: ffffc9000692fe48 R15: 0000000000000000
FS:  0000555583d4d500(0000) GS:ffff88813bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000069 CR3: 000000010a2f6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ovl_flush+0x34/0xc0 fs/overlayfs/file.c:604
 filp_flush fs/open.c:1525 [inline]
 filp_close+0x2a/0x80 fs/open.c:1538
 __range_close fs/file.c:703 [inline]
 __close_range+0xfe/0x240 fs/file.c:760
 __do_sys_close_range fs/open.c:1591 [inline]
 __se_sys_close_range fs/open.c:1588 [inline]
 __x64_sys_close_range+0x14/0x20 fs/open.c:1588
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42e9b7dff9
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:00007fff64324da8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 000000000000f7bb RCX: 00007f42e9b7dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f42e9d37a80 R08: 0000000000000001 R09: 00007fff6432509f
R10: 00007f42e9a00000 R11: 0000000000000246 R12: 000000000000f7ef
R13: 00007fff64324eb0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
Modules linked in:
CR2: 0000000000000069
---[ end trace 0000000000000000 ]---
RIP: 0010:file_inode include/linux/fs.h:1123 [inline]
RIP: 0010:ovl_real_fdget_path fs/overlayfs/file.c:108 [inline]
RIP: 0010:ovl_real_fdget+0x8e/0x110 fs/overlayfs/file.c:144
Code: 87 ff ff 41 89 c7 85 c0 75 53 48 89 e6 48 89 df e8 b7 a9 ff ff 49 8b 44 24 60 48 8b 38 49 89 3e 48 8b 44 24 08 48 85 c0 74 2d <48> 8b 4f 68 48 3b 48 68 75 4c 41 8b 74 24 70 8b 47 70 31 f0 45 31
RSP: 0018:ffffc9000692fe08 EFLAGS: 00010282
RAX: ffff88810e7b9270 RBX: ffff88810e7b9138 RCX: ffff88810e7b9270
RDX: 0000000000000000 RSI: ffffc9000692fe08 RDI: 0000000000000001
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff817eea30 R12: ffff88810a32ac00
R13: 000000000000001e R14: ffffc9000692fe48 R15: 0000000000000000
FS:  0000555583d4d500(0000) GS:ffff88813bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000069 CR3: 000000010a2f6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	41 89 c7             	mov    %eax,%r15d
   3:	85 c0                	test   %eax,%eax
   5:	75 53                	jne    0x5a
   7:	48 89 e6             	mov    %rsp,%rsi
   a:	48 89 df             	mov    %rbx,%rdi
   d:	e8 b7 a9 ff ff       	call   0xffffa9c9
  12:	49 8b 44 24 60       	mov    0x60(%r12),%rax
  17:	48 8b 38             	mov    (%rax),%rdi
  1a:	49 89 3e             	mov    %rdi,(%r14)
  1d:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  22:	48 85 c0             	test   %rax,%rax
  25:	74 2d                	je     0x54
* 27:	48 8b 4f 68          	mov    0x68(%rdi),%rcx <-- trapping instruction
  2b:	48 3b 48 68          	cmp    0x68(%rax),%rcx
  2f:	75 4c                	jne    0x7d
  31:	41 8b 74 24 70       	mov    0x70(%r12),%esi
  36:	8b 47 70             	mov    0x70(%rdi),%eax
  39:	31 f0                	xor    %esi,%eax
  3b:	45                   	rex.RB
  3c:	31                   	.byte 0x31