general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 PID: 15329 Comm: syz.2.4278 Not tainted 5.10.216-syzkaller-00510-ga4a2b7a82ee4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:vfs_rename+0x106/0xeb0 fs/namei.c:4371
Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d2 05 f4 ff 48 8b 03 48 89 44 24 58 4c 89 74 24 38 4d 8d 7e 30 4d 89 fe 49 c1 ee 03 <43> 80 3c 26 00 74 08 4c 89 ff e8 ab 05 f4 ff 49 8b 07 48 89 44 24
RSP: 0018:ffffc90000ed7ba0 EFLAGS: 00010202
RAX: ffff88812a229b00 RBX: ffff88813b990470 RCX: 0000000000040000
RDX: ffff88812beb2780 RSI: 0000000000400000 RDI: 0000000000200000
RBP: ffffc90000ed7cf0 R08: ffffffff81b438bf R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88812a141b00 R14: 0000000000000008 R15: 0000000000000040
FS:  00007f5bf3e9b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020007000 CR3: 000000010a80b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_renameat2+0xa56/0x1240 fs/namei.c:4619
 __do_sys_rename fs/namei.c:4670 [inline]
 __se_sys_rename fs/namei.c:4668 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:4668
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f5bf4c5bb29
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:00007f5bf3e9b048 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f5bf4dea140 RCX: 00007f5bf4c5bb29
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007f5bf4cdc756 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5bf4dea140 R15: 00007fff46583698
Modules linked in:
---[ end trace e0c3d3eb9131c844 ]---
RIP: 0010:vfs_rename+0x106/0xeb0 fs/namei.c:4371
Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d2 05 f4 ff 48 8b 03 48 89 44 24 58 4c 89 74 24 38 4d 8d 7e 30 4d 89 fe 49 c1 ee 03 <43> 80 3c 26 00 74 08 4c 89 ff e8 ab 05 f4 ff 49 8b 07 48 89 44 24
RSP: 0018:ffffc90000ed7ba0 EFLAGS: 00010202
RAX: ffff88812a229b00 RBX: ffff88813b990470 RCX: 0000000000040000
RDX: ffff88812beb2780 RSI: 0000000000400000 RDI: 0000000000200000
RBP: ffffc90000ed7cf0 R08: ffffffff81b438bf R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88812a141b00 R14: 0000000000000008 R15: 0000000000000040
FS:  00007f5bf3e9b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556ea14a8 CR3: 000000010a80b000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c1 e8 03             	shr    $0x3,%eax
   3:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   8:	74 08                	je     0x12
   a:	48 89 df             	mov    %rbx,%rdi
   d:	e8 d2 05 f4 ff       	call   0xfff405e4
  12:	48 8b 03             	mov    (%rbx),%rax
  15:	48 89 44 24 58       	mov    %rax,0x58(%rsp)
  1a:	4c 89 74 24 38       	mov    %r14,0x38(%rsp)
  1f:	4d 8d 7e 30          	lea    0x30(%r14),%r15
  23:	4d 89 fe             	mov    %r15,%r14
  26:	49 c1 ee 03          	shr    $0x3,%r14
* 2a:	43 80 3c 26 00       	cmpb   $0x0,(%r14,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 ab 05 f4 ff       	call   0xfff405e4
  39:	49 8b 07             	mov    (%r15),%rax
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	44                   	rex.R
  3f:	24                   	.byte 0x24