REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3050 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:d_really_is_negative include/linux/dcache.h:466 [inline]
RIP: 0010:reiserfs_xattr_jcreate_nblocks fs/reiserfs/xattr.h:78 [inline]
RIP: 0010:reiserfs_security_init+0x20b/0x440 fs/reiserfs/xattr_security.c:70
Code: 48 c1 ee 03 80 3c 0e 00 0f 85 f5 01 00 00 48 8b 9b 78 05 00 00 48 b9 00 00 00 00 00 fc ff df 48 8d 7b 58 48 89 fe 48 c1 ee 03 <80> 3c 0e 00 0f 85 f1 01 00 00 4c 01 c0 48 83 7b 58 00 74 03 4c 89
RSP: 0018:ffff8800ab12f7f8 EFLAGS: 00010202
RAX: 0000000000000036 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000280202 RSI: 000000000000000b RDI: 0000000000000058
RBP: ffff8800ab12f838 R08: 000000000000006c R09: ffffed00157af8b4
R10: ffff8800ab12f898 R11: ffff8800abd7c5a1 R12: ffff8800a8236600
R13: 0000000000000001 R14: ffff88009f390168 R15: 0000000000000000
FS:  00007f25d9a506c0(0000) GS:ffff8800bad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cc7720000 CR3: 00000000b58e2000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 reiserfs_mkdir+0x296/0x840 fs/reiserfs/namei.c:818
 xattr_mkdir.constprop.4+0x91/0xc0 fs/reiserfs/xattr.c:76
 create_privroot fs/reiserfs/xattr.c:859 [inline]
 reiserfs_xattr_init+0x39c/0xa40 fs/reiserfs/xattr.c:978
 reiserfs_fill_super+0x1ab4/0x26b0 fs/reiserfs/super.c:2177
 mount_bdev+0x26f/0x330 fs/super.c:1158
 get_super_block+0x10/0x20 fs/reiserfs/super.c:2605
 mount_fs+0x7f/0x1f0 fs/super.c:1261
 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2457 [inline]
 do_mount+0x376/0x26e0 fs/namespace.c:2787
 ksys_mount+0xb1/0xd0 fs/namespace.c:3003
 __do_sys_mount fs/namespace.c:3017 [inline]
 __se_sys_mount fs/namespace.c:3014 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3014
 do_syscall_64+0xca/0x340 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f25d9ecefda
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25d9a4fee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f25d9a4ff80 RCX: 00007f25d9ecefda
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 00007f25d9a4ff40
RBP: 0000000020000080 R08: 00007f25d9a4ff80 R09: 0000000000008008
R10: 0000000000008008 R11: 0000000000000246 R12: 0000000020000040
R13: 00007f25d9a4ff40 R14: 0000000000001138 R15: 00000000200000c0
Modules linked in:
---[ end trace 06f8764cd6874b11 ]---
RIP: 0010:d_really_is_negative include/linux/dcache.h:466 [inline]
RIP: 0010:reiserfs_xattr_jcreate_nblocks fs/reiserfs/xattr.h:78 [inline]
RIP: 0010:reiserfs_security_init+0x20b/0x440 fs/reiserfs/xattr_security.c:70
Code: 48 c1 ee 03 80 3c 0e 00 0f 85 f5 01 00 00 48 8b 9b 78 05 00 00 48 b9 00 00 00 00 00 fc ff df 48 8d 7b 58 48 89 fe 48 c1 ee 03 <80> 3c 0e 00 0f 85 f1 01 00 00 4c 01 c0 48 83 7b 58 00 74 03 4c 89
RSP: 0018:ffff8800ab12f7f8 EFLAGS: 00010202
RAX: 0000000000000036 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000280202 RSI: 000000000000000b RDI: 0000000000000058
RBP: ffff8800ab12f838 R08: 000000000000006c R09: ffffed00157af8b4
R10: ffff8800ab12f898 R11: ffff8800abd7c5a1 R12: ffff8800a8236600
R13: 0000000000000001 R14: ffff88009f390168 R15: 0000000000000000
FS:  00007f25d9a506c0(0000) GS:ffff8800bad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cc7720000 CR3: 00000000b58e2000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 c1 ee 03          	shr    $0x3,%rsi
   4:	80 3c 0e 00          	cmpb   $0x0,(%rsi,%rcx,1)
   8:	0f 85 f5 01 00 00    	jne    0x203
   e:	48 8b 9b 78 05 00 00 	mov    0x578(%rbx),%rbx
  15:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  1c:	fc ff df
  1f:	48 8d 7b 58          	lea    0x58(%rbx),%rdi
  23:	48 89 fe             	mov    %rdi,%rsi
  26:	48 c1 ee 03          	shr    $0x3,%rsi
* 2a:	80 3c 0e 00          	cmpb   $0x0,(%rsi,%rcx,1) <-- trapping instruction
  2e:	0f 85 f1 01 00 00    	jne    0x225
  34:	4c 01 c0             	add    %r8,%rax
  37:	48 83 7b 58 00       	cmpq   $0x0,0x58(%rbx)
  3c:	74 03                	je     0x41
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89