loop3: detected capacity change from 0 to 64
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 556fa067 P4D 556fa067 PUD 51936067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 PID: 11617 Comm: syz-executor.3 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc90002c47328 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802909fd60 RCX: ffffc9002b20b000
RDX: 0000000000000000 RSI: ffff88802909fd60 RDI: ffff88804c1e0540
RBP: 1ffff92000588e68 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000010000000 R11: 0000000000000002 R12: ffffffff8b3da2c0
R13: ffff88804c1e0540 R14: ffffc90002c47360 R15: 0000000010000000
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5ebcb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000068520000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __lookup_slow+0x24f/0x460 fs/namei.c:1692
 lookup_slow fs/namei.c:1709 [inline]
 lookup_one_unlocked+0x142/0x160 fs/namei.c:2825
 ovl_lookup_positive_unlocked fs/overlayfs/namei.c:210 [inline]
 ovl_lookup_single+0x201/0xf60 fs/overlayfs/namei.c:240
 ovl_lookup_layer+0x3a9/0x4a0 fs/overlayfs/namei.c:333
 ovl_lookup+0x13a9/0x21f0 fs/overlayfs/namei.c:1124
 lookup_open.isra.0+0x928/0x13c0 fs/namei.c:3483
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x92f/0x29f0 fs/namei.c:3804
 do_filp_open+0x1dc/0x430 fs/namei.c:3834
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1405
 do_sys_open fs/open.c:1420 [inline]
 __do_compat_sys_open fs/open.c:1471 [inline]
 __se_compat_sys_open fs/open.c:1469 [inline]
 __ia32_compat_sys_open+0x147/0x1e0 fs/open.c:1469
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72ca579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5ebc5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 00000000200005c0 RCX: 0000000000147842
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc90002c47328 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802909fd60 RCX: ffffc9002b20b000
RDX: 0000000000000000 RSI: ffff88802909fd60 RDI: ffff88804c1e0540
RBP: 1ffff92000588e68 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000010000000 R11: 0000000000000002 R12: ffffffff8b3da2c0
R13: ffff88804c1e0540 R14: ffffc90002c47360 R15: 0000000010000000
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5ebcb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000068520000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi