EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
kasan: CONFIG_KASAN_INLINE enabled
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13300 Comm: syz-executor.2 Not tainted 4.19.205-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:543 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:722
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 58 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:ffff8880a14b7660 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000a339000
RDX: 000000000000000b RSI: ffffffff8331d61e RDI: 0000000000000058
RBP: ffff8880a14b77b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae7db9a0
R13: ffff8880a14b77b8 R14: 00000000000007ff R15: 0000000000000000
FS:  00007f8a81e68700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe17164c20 CR3: 000000009f21d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 vfs_getattr+0x22/0x60 fs/stat.c:113
 ovl_copy_up_one+0x125/0xf20 fs/overlayfs/copy_up.c:776
 ovl_copy_up_flags+0x150/0x1d0 fs/overlayfs/copy_up.c:858
 ovl_maybe_copy_up+0x140/0x190 fs/overlayfs/copy_up.c:890
 ovl_open+0xb4/0x260 fs/overlayfs/file.c:126
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
 do_last fs/namei.c:3421 [inline]
 path_openat+0x793/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 file_open_name+0x269/0x380 fs/open.c:1032
 acct_on kernel/acct.c:207 [inline]
 __do_sys_acct kernel/acct.c:286 [inline]
 __se_sys_acct+0xf2/0x930 kernel/acct.c:273
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
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:00007f8a81e68188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe982d299f R14: 00007f8a81e68300 R15: 0000000000022000
Modules linked in:
---[ end trace b4bb932902196d92 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:543 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:722
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 58 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
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
RSP: 0018:ffff8880a14b7660 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000a339000
RDX: 000000000000000b RSI: ffffffff8331d61e RDI: 0000000000000058
RBP: ffff8880a14b77b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae7db9a0
R13: ffff8880a14b77b8 R14: 00000000000007ff R15: 0000000000000000
audit: type=1804 audit(1630516902.928:203): pid=13322 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir481426330/syzkaller.lsrS9d/765/bus" dev="sda1" ino=13990 res=1
FS:  00007f8a81e68700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffbd817afe8 CR3: 000000009f21d000 CR4: 00000000001406e0
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 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 58          	lea    0x58(%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