BUG: kernel NULL pointer dereference, address: 0000000000000040
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 113c74067 P4D 113c74067 PUD 113c78067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 349 Comm: syz-executor.0 Not tainted 6.1.1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:vfs_rename+0x48/0x5e0 fs/namei.c:4692
Code: 00 00 48 89 45 d0 4c 8b 47 08 4c 8b 7f 10 48 8b 4f 20 48 8b 77 28 4c 8b 4f 30 41 bd 00 00 60 00 45 23 2f 8b 57 38 49 8b 5f 30 <48> 8b 7e 30 48 8b 41 28 8b 80 08 04 00 00 48 c7 45 c8 00 00 00 00
RSP: 0018:ffffc90000727d30 EFLAGS: 00010206
RAX: a1de9ad0eaba3600 RBX: ffff88810bab0000 RCX: ffff88810bab3480
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc90000727e90
RBP: ffffc90000727dd8 R08: ffff88810bab3480 R09: ffffc90000727e40
R10: ffff8881123f4f00 R11: ffff888100041400 R12: ffffc90000727e90
R13: 0000000000400000 R14: 0000000020000101 R15: ffff888113419540
FS:  00007f5b92bba6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000040 CR3: 0000000112230000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_renameat2+0x404/0x600 fs/namei.c:4930
 __do_sys_rename fs/namei.c:4976 [inline]
 __se_sys_rename fs/namei.c:4974 [inline]
 __x64_sys_rename+0x3f/0x50 fs/namei.c:4974
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5b91e7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b92bba0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f5b91f9bf80 RCX: 00007f5b91e7cae9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007f5b91ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5b91f9bf80 R15: 00007ffff5eea808
 </TASK>
Modules linked in:
CR2: 0000000000000040
---[ end trace 0000000000000000 ]---
RIP: 0010:vfs_rename+0x48/0x5e0 fs/namei.c:4692
Code: 00 00 48 89 45 d0 4c 8b 47 08 4c 8b 7f 10 48 8b 4f 20 48 8b 77 28 4c 8b 4f 30 41 bd 00 00 60 00 45 23 2f 8b 57 38 49 8b 5f 30 <48> 8b 7e 30 48 8b 41 28 8b 80 08 04 00 00 48 c7 45 c8 00 00 00 00
RSP: 0018:ffffc90000727d30 EFLAGS: 00010206
RAX: a1de9ad0eaba3600 RBX: ffff88810bab0000 RCX: ffff88810bab3480
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc90000727e90
RBP: ffffc90000727dd8 R08: ffff88810bab3480 R09: ffffc90000727e40
R10: ffff8881123f4f00 R11: ffff888100041400 R12: ffffc90000727e90
R13: 0000000000400000 R14: 0000000020000101 R15: ffff888113419540
FS:  00007f5b92bba6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000040 CR3: 0000000112230000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 89 45 d0          	mov    %rax,-0x30(%rbp)
   6:	4c 8b 47 08          	mov    0x8(%rdi),%r8
   a:	4c 8b 7f 10          	mov    0x10(%rdi),%r15
   e:	48 8b 4f 20          	mov    0x20(%rdi),%rcx
  12:	48 8b 77 28          	mov    0x28(%rdi),%rsi
  16:	4c 8b 4f 30          	mov    0x30(%rdi),%r9
  1a:	41 bd 00 00 60 00    	mov    $0x600000,%r13d
  20:	45 23 2f             	and    (%r15),%r13d
  23:	8b 57 38             	mov    0x38(%rdi),%edx
  26:	49 8b 5f 30          	mov    0x30(%r15),%rbx
* 2a:	48 8b 7e 30          	mov    0x30(%rsi),%rdi <-- trapping instruction
  2e:	48 8b 41 28          	mov    0x28(%rcx),%rax
  32:	8b 80 08 04 00 00    	mov    0x408(%rax),%eax
  38:	48 c7 45 c8 00 00 00 	movq   $0x0,-0x38(%rbp)
  3f:	00