general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
CPU: 0 PID: 8627 Comm: syz-executor.4 Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:d_backing_inode include/linux/dcache.h:543 [inline]
RIP: 0010:security_inode_getattr+0x46/0x120 security/security.c:1373
Code: 95 fd 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 b8 2d eb fd 48 8b 2b 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 9b 2d eb fd 48 8b 6d 00 48 83 c5
RSP: 0018:ffffc90006eb7560 EFLAGS: 00010202
RAX: 000000000000000d RBX: ffffc90006eb79f8 RCX: ffff88803184ba80
RDX: 0000000000000000 RSI: ffffc90006eb7a00 RDI: ffffc90006eb79f0
RBP: 0000000000000068 R08: dffffc0000000000 R09: ffffc90006eb79f0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffc90006eb79e0 R14: 0000000000000000 R15: ffffc90006eb79f0
FS:  00007f6048e49700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6048e49718 CR3: 000000001e4d6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_getattr+0x25/0x70 fs/stat.c:161
 ovl_copy_up_one fs/overlayfs/copy_up.c:1009 [inline]
 ovl_copy_up_flags+0x5a5/0x3ba0 fs/overlayfs/copy_up.c:1095
 ovl_setattr+0x10f/0x4c0 fs/overlayfs/inode.c:47
 notify_change+0xdd1/0x1080 fs/attr.c:482
 do_truncate+0x220/0x300 fs/open.c:65
 vfs_truncate+0x2cb/0x390 fs/open.c:111
 do_sys_truncate+0xde/0x190 fs/open.c:134
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f604808c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6048e49168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f60481ac120 RCX: 00007f604808c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f60480e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff69feb43f R14: 00007f6048e49300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:543 [inline]
RIP: 0010:security_inode_getattr+0x46/0x120 security/security.c:1373
Code: 95 fd 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 b8 2d eb fd 48 8b 2b 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 9b 2d eb fd 48 8b 6d 00 48 83 c5
RSP: 0018:ffffc90006eb7560 EFLAGS: 00010202
RAX: 000000000000000d RBX: ffffc90006eb79f8 RCX: ffff88803184ba80
RDX: 0000000000000000 RSI: ffffc90006eb7a00 RDI: ffffc90006eb79f0
RBP: 0000000000000068 R08: dffffc0000000000 R09: ffffc90006eb79f0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffc90006eb79e0 R14: 0000000000000000 R15: ffffc90006eb79f0
FS:  00007f6048e49700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6048e27fc0 CR3: 000000001e4d6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	95                   	xchg   %eax,%ebp
   1:	fd                   	std
   2:	49 8d 5f 08          	lea    0x8(%r15),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 b8 2d eb fd       	callq  0xfdeb2dd4
  1c:	48 8b 2b             	mov    (%rbx),%rbp
  1f:	48 83 c5 68          	add    $0x68,%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 ef             	mov    %rbp,%rdi
  34:	e8 9b 2d eb fd       	callq  0xfdeb2dd4
  39:	48 8b 6d 00          	mov    0x0(%rbp),%rbp
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c5                   	.byte 0xc5