REISERFS (device loop4): Using r5 hash to sort names
reiserfs: enabling write barrier flush mode
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
BUG: unable to handle page fault for address: fffffbfff5aaca78
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8192 Comm: syz-executor.4 Not tainted 6.3.0-rc6-syzkaller-00173-g7a934f4bd7d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__d_entry_type include/linux/dcache.h:385 [inline]
RIP: 0010:d_can_lookup include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline]
RIP: 0010:do_open fs/namei.c:3536 [inline]
RIP: 0010:path_openat+0xca2/0x2750 fs/namei.c:3715
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 86 16 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 89 da 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 54 16 00 00 8b 2b bf 00 00 20
RSP: 0018:ffffc90015a67af8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffffffffad5653c7 RCX: ffffc9000d6bc000
RDX: 1ffffffff5aaca78 RSI: ffffffff81e6d6b0 RDI: 0000000000000005
RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88802a7c4cfc R14: 000000000004e042 R15: ffffc90015a67c38
FS:  00007f2e9e1e2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff5aaca78 CR3: 0000000021cbc000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 do_filp_open+0x1ba/0x410 fs/namei.c:3742
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_open fs/open.c:1372 [inline]
 __se_sys_open fs/open.c:1368 [inline]
 __x64_sys_open+0x11d/0x1c0 fs/open.c:1368
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2e9d48c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2e9e1e2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f2e9d5abf80 RCX: 00007f2e9d48c169
RDX: 0000000000000000 RSI: 000000000104e042 RDI: 0000000020000400
RBP: 00007f2e9d4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff545e57cf R14: 00007f2e9e1e2300 R15: 0000000000022000
 </TASK>
Modules linked in:
CR2: fffffbfff5aaca78
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:385 [inline]
RIP: 0010:d_can_lookup include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_dir include/linux/dcache.h:410 [inline]
RIP: 0010:do_open fs/namei.c:3536 [inline]
RIP: 0010:path_openat+0xca2/0x2750 fs/namei.c:3715
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 86 16 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 89 da 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 54 16 00 00 8b 2b bf 00 00 20
RSP: 0018:ffffc90015a67af8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffffffffad5653c7 RCX: ffffc9000d6bc000
RDX: 1ffffffff5aaca78 RSI: ffffffff81e6d6b0 RDI: 0000000000000005
RBP: 0000000000100000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88802a7c4cfc R14: 000000000004e042 R15: ffffc90015a67c38
FS:  00007f2e9e1e2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff5aaca78 CR3: 0000000021cbc000 CR4: 0000000000350ee0
----------------
Code disassembly (best guess), 7 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 86 16 00 00    	jne    0x1694
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	49 8b 5f 08          	mov    0x8(%r15),%rbx
  1c:	48 89 da             	mov    %rbx,%rdx
  1f:	48 c1 ea 03          	shr    $0x3,%rdx
* 23:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  27:	84 c0                	test   %al,%al
  29:	74 08                	je     0x33
  2b:	3c 03                	cmp    $0x3,%al
  2d:	0f 8e 54 16 00 00    	jle    0x1687
  33:	8b 2b                	mov    (%rbx),%ebp
  35:	bf                   	.byte 0xbf
  36:	00 00                	add    %al,(%rax)
  38:	20                   	.byte 0x20