loop6: detected capacity change from 0 to 8
SQUASHFS error: Unable to read directory block [0:26]
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 1 UID: 0 PID: 6910 Comm: syz.6.153 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:lookup_open+0x890/0x16e0 fs/namei.c:4648
Code: 09 00 00 e8 a2 60 68 ff 49 81 ff 01 f0 ff ff 0f 83 2a ff ff ff 4d 8d 77 68 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 92 54 e8 ff 49 83 3e 00 74 07 e8 67
RSP: 0018:ffffc90004ce79c0 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000040 RCX: dffffc0000000000
RDX: ffffc90003bb9000 RSI: 000000000000051e RDI: 000000000000051f
RBP: 00000000ffffffe2 R08: ffff8880581968db R09: 1ffff1100b032d1b
R10: dffffc0000000000 R11: ffffed100b032d1c R12: 1ffff1100acf6e4c
R13: ffffc90004ce7e00 R14: 0000000000000070 R15: 0000000000000008
FS:  00007efdd07e56c0(0000) GS:ffff8881234cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e18ff8 CR3: 0000000078b6a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 open_last_lookups fs/namei.c:4880 [inline]
 path_openat+0x7a5/0x20e0 fs/namei.c:5119
 do_file_open+0x23e/0x4a0 fs/namei.c:5151
 do_sys_openat2+0x115/0x200 fs/open.c:1492
 do_sys_open fs/open.c:1498 [inline]
 __do_sys_openat fs/open.c:1838 [inline]
 __se_sys_openat fs/open.c:1833 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1833
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x171/0x540 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x00007efdcf9a94d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efdd07e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007efdcfc25fa0 RCX: 00007efdcf9a94d9
RDX: 0000000000101042 RSI: 00002000000002c0 RDI: ffffffffffffff9c
RBP: 00007efdcfa3804e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000106 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efdcfc26038 R14: 00007efdcfc25fa0 R15: 00007ffdc3e0ccb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lookup_open+0x890/0x16e0 fs/namei.c:4648
Code: 09 00 00 e8 a2 60 68 ff 49 81 ff 01 f0 ff ff 0f 83 2a ff ff ff 4d 8d 77 68 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 92 54 e8 ff 49 83 3e 00 74 07 e8 67
RSP: 0018:ffffc90004ce79c0 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000040 RCX: dffffc0000000000
RDX: ffffc90003bb9000 RSI: 000000000000051e RDI: 000000000000051f
RBP: 00000000ffffffe2 R08: ffff8880581968db R09: 1ffff1100b032d1b
R10: dffffc0000000000 R11: ffffed100b032d1c R12: 1ffff1100acf6e4c
R13: ffffc90004ce7e00 R14: 0000000000000070 R15: 0000000000000008
FS:  00007efdd07e56c0(0000) GS:ffff8881234cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e18ff8 CR3: 0000000078b6a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	e8 a2 60 68 ff       	call   0xff6860a9
   7:	49 81 ff 01 f0 ff ff 	cmp    $0xfffffffffffff001,%r15
   e:	0f 83 2a ff ff ff    	jae    0xffffff3e
  14:	4d 8d 77 68          	lea    0x68(%r15),%r14
  18:	4c 89 f0             	mov    %r14,%rax
  1b:	48 c1 e8 03          	shr    $0x3,%rax
  1f:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  26:	fc ff df
* 29:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 f7             	mov    %r14,%rdi
  32:	e8 92 54 e8 ff       	call   0xffe854c9
  37:	49 83 3e 00          	cmpq   $0x0,(%r14)
  3b:	74 07                	je     0x44
  3d:	e8                   	.byte 0xe8
  3e:	67                   	addr32