general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 303 Comm: syz-executor153 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1348
Code: 45 ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 37 b3 84 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 1a b3 84 ff 4d 8b 36 49 83 c6 0c
RSP: 0018:ffffc900007b70a0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: ffffc900007b7490 RCX: ffff88810afa62c0
RDX: 0000000000000000 RSI: ffffc900007b74a0 RDI: ffffc900007b7490
RBP: ffffc900007b70c8 R08: ffffc900007b749f R09: ffffc900007b7490
R10: dffffc0000000000 R11: fffff520000f6e94 R12: ffffc900007b7490
R13: dffffc0000000000 R14: 0000000000000030 R15: fffff520000f6e44
FS:  0000555582f53480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 00000001241bc000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_getattr+0x29/0x310 fs/stat.c:157
 ovl_copy_up_one fs/overlayfs/copy_up.c:965 [inline]
 ovl_copy_up_flags+0x487/0x1c90 fs/overlayfs/copy_up.c:1051
 ovl_maybe_copy_up+0x160/0x190 fs/overlayfs/copy_up.c:1083
 ovl_open+0x9d/0x1f0 fs/overlayfs/file.c:152
 do_dentry_open+0x82a/0x1010 fs/open.c:828
 vfs_open fs/open.c:960 [inline]
 dentry_open+0xbb/0x100 fs/open.c:976
 file_open+0x2a4/0x680 fs/incfs/vfs.c:1493
 do_dentry_open+0x82a/0x1010 fs/open.c:828
 vfs_open+0x73/0x80 fs/open.c:960
 do_open fs/namei.c:3616 [inline]
 path_openat+0x26e6/0x2f80 fs/namei.c:3750
 do_filp_open+0x1df/0x400 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_openat fs/open.c:1268 [inline]
 __se_sys_openat fs/open.c:1263 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1263
 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f71b007d579
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc21ce22a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0032656c69662f30 RCX: 00007f71b007d579
RDX: 0000000000020400 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007ffc21ce22b8 R08: 00007f71b0062190 R09: 00007f71b0062190
R10: 00000000000000b6 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000002 R14: 00007f71b0104ca0 R15: 0000000000000002
 </TASK>
Modules linked in:
---[ end trace 02560dbcd0749aca ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1348
Code: 45 ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 37 b3 84 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 1a b3 84 ff 4d 8b 36 49 83 c6 0c
RSP: 0018:ffffc900007b70a0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: ffffc900007b7490 RCX: ffff88810afa62c0
RDX: 0000000000000000 RSI: ffffc900007b74a0 RDI: ffffc900007b7490
RBP: ffffc900007b70c8 R08: ffffc900007b749f R09: ffffc900007b7490
R10: dffffc0000000000 R11: fffff520000f6e94 R12: ffffc900007b7490
R13: dffffc0000000000 R14: 0000000000000030 R15: fffff520000f6e44
FS:  0000555582f53480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 00000001241bc000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	45 ff 4c 8d 73       	rex.RB decl 0x73(%r13,%rcx,4)
   5:	08 4c 89 f0          	or     %cl,-0x10(%rcx,%rcx,4)
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	4c 89 f7             	mov    %r14,%rdi
  17:	e8 37 b3 84 ff       	call   0xff84b353
  1c:	4d 8b 36             	mov    (%r14),%r14
  1f:	49 83 c6 30          	add    $0x30,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 1a b3 84 ff       	call   0xff84b353
  39:	4d 8b 36             	mov    (%r14),%r14
  3c:	49 83 c6 0c          	add    $0xc,%r14