REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
CPU: 1 PID: 6042 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:d_really_is_negative include/linux/dcache.h:473 [inline]
RIP: 0010:reiserfs_xattr_jcreate_nblocks fs/reiserfs/xattr.h:78 [inline]
RIP: 0010:reiserfs_security_init+0x218/0x480 fs/reiserfs/xattr_security.c:70
Code: 48 c1 e9 03 80 3c 11 00 0f 85 31 02 00 00 48 8b 9b a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 7b 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 e5 01 00 00 4c 01 c0 48 83 7b 68 00 74 03 4c 89
RSP: 0018:ffffc9000189f968 EFLAGS: 00010212
RAX: 0000000000000036 RBX: 0000000000000000 RCX: 000000000000000d
RDX: dffffc0000000000 RSI: 0000000000280202 RDI: 0000000000000068
RBP: 000000000000057d R08: 000000000000006c R09: ffffc9000189fa08
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888032a087a0
R13: ffff888018ee2000 R14: 0000000000000000 R15: ffff888032a08620
FS:  00007f0dc926f700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a53723378 CR3: 000000001e78e000 CR4: 0000000000350ee0
Call Trace:
 reiserfs_mkdir+0x280/0x860 fs/reiserfs/namei.c:821
 create_privroot fs/reiserfs/xattr.c:889 [inline]
 reiserfs_xattr_init+0x412/0xa60 fs/reiserfs/xattr.c:1011
 reiserfs_fill_super+0x1c53/0x2670 fs/reiserfs/super.c:2177
 mount_bdev+0x2cb/0x3b0 fs/super.c:1366
 legacy_get_tree+0xfa/0x1f0 fs/fs_context.c:592
 vfs_get_tree+0x7f/0x2c0 fs/super.c:1496
 do_new_mount fs/namespace.c:2881 [inline]
 path_mount+0x7f3/0x1b30 fs/namespace.c:3211
 do_mount fs/namespace.c:3224 [inline]
 __do_sys_mount fs/namespace.c:3432 [inline]
 __se_sys_mount fs/namespace.c:3409 [inline]
 __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3409
 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f0dc9afb8fa
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0dc926ef88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0dc9afb8fa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0dc926efe0
RBP: 00007f0dc926f020 R08: 00007f0dc926f020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f0dc926efe0 R15: 0000000020010dc0
Modules linked in:
---[ end trace c89d511af6e1a904 ]---
RIP: 0010:d_really_is_negative include/linux/dcache.h:473 [inline]
RIP: 0010:reiserfs_xattr_jcreate_nblocks fs/reiserfs/xattr.h:78 [inline]
RIP: 0010:reiserfs_security_init+0x218/0x480 fs/reiserfs/xattr_security.c:70
Code: 48 c1 e9 03 80 3c 11 00 0f 85 31 02 00 00 48 8b 9b a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 7b 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 e5 01 00 00 4c 01 c0 48 83 7b 68 00 74 03 4c 89
RSP: 0018:ffffc9000189f968 EFLAGS: 00010212
RAX: 0000000000000036 RBX: 0000000000000000 RCX: 000000000000000d
RDX: dffffc0000000000 RSI: 0000000000280202 RDI: 0000000000000068
RBP: 000000000000057d R08: 000000000000006c R09: ffffc9000189fa08
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888032a087a0
R13: ffff888018ee2000 R14: 0000000000000000 R15: ffff888032a08620
FS:  00007f0dc926f700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dbfce39098 CR3: 000000001e78e000 CR4: 0000000000350ee0
----------------
Code disassembly (best guess):
   0:	48 c1 e9 03          	shr    $0x3,%rcx
   4:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   8:	0f 85 31 02 00 00    	jne    0x23f
   e:	48 8b 9b a0 05 00 00 	mov    0x5a0(%rbx),%rbx
  15:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  1c:	fc ff df
  1f:	48 8d 7b 68          	lea    0x68(%rbx),%rdi
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 e5 01 00 00    	jne    0x219
  34:	4c 01 c0             	add    %r8,%rax
  37:	48 83 7b 68 00       	cmpq   $0x0,0x68(%rbx)
  3c:	74 03                	je     0x41
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89