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: 8231 Comm: syz-executor.4 Not tainted 5.14.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1331
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90002d77638 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90012961000
RDX: 000000000000000d RSI: ffffffff839b7a8e RDI: 0000000000000068
RBP: ffffc90002d77808 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff82b23adb R11: 0000000000000000 R12: ffff8880223bf8f8
R13: ffffc90002d77808 R14: 00000000000007ff R15: 0000000000000000
FS:  00007f40a2da1700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e12d000 CR3: 0000000075d09000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 vfs_getattr+0x22/0x60 fs/stat.c:139
 ovl_copy_up_one+0x133/0x1de0 fs/overlayfs/copy_up.c:884
 ovl_copy_up_flags+0x150/0x1d0 fs/overlayfs/copy_up.c:966
 ovl_maybe_copy_up+0x140/0x190 fs/overlayfs/copy_up.c:998
 ovl_open+0xba/0x270 fs/overlayfs/file.c:149
 do_dentry_open+0x4c8/0x11d0 fs/open.c:826
 do_open fs/namei.c:3374 [inline]
 path_openat+0x1c23/0x27f0 fs/namei.c:3507
 do_filp_open+0x1aa/0x400 fs/namei.c:3534
 file_open_name+0x2a8/0x420 fs/open.c:1149
 acct_on+0x78/0x780 kernel/acct.c:207
 __do_sys_acct kernel/acct.c:286 [inline]
 __se_sys_acct kernel/acct.c:273 [inline]
 __x64_sys_acct+0xab/0x1f0 kernel/acct.c:273
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40a2da1188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffc3f449c5f R14: 00007f40a2da1300 R15: 0000000000022000
Modules linked in:
---[ end trace 82918cd01ab58f0a ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1331
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90002d77638 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90012961000
RDX: 000000000000000d RSI: ffffffff839b7a8e RDI: 0000000000000068
RBP: ffffc90002d77808 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff82b23adb R11: 0000000000000000 R12: ffff8880223bf8f8
R13: ffffc90002d77808 R14: 00000000000007ff R15: 0000000000000000
FS:  00007f40a2da1700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000023df848 CR3: 0000000075d09000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 04 01 00 00    	jne    0x115
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df
  1b:	49 8b 5d 08          	mov    0x8(%r13),%rbx
  1f:	48 8d 7b 68          	lea    0x68(%rbx),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 d7 00 00 00    	jne    0x10b
  34:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3b:	fc ff df
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b