loop0: detected capacity change from 0 to 512
------------[ cut here ]------------
EA inode 11 i_nlink=0
WARNING: fs/ext4/xattr.c:1059 at ext4_xattr_inode_update_ref+0x4cc/0x590 fs/ext4/xattr.c:1057, CPU#0: syz.0.0/5337
Modules linked in:
CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ext4_xattr_inode_update_ref+0x50c/0x590 fs/ext4/xattr.c:1057
Code: 08 4c 89 e7 e8 85 13 96 ff 4d 8b 24 24 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 75 73 41 8b 55 00 48 89 df 4c 89 e6 <67> 48 0f b9 3a e9 5f fe ff ff e8 15 f0 0d 09 44 89 e9 80 e1 07 80
RSP: 0018:ffffc9000f08f260 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff90386070 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 000000000000000b RDI: ffffffff90386070
RBP: ffffc9000f08f350 R08: ffff888047d3a02f R09: 1ffff11008fa7405
R10: dffffc0000000000 R11: ffffed1008fa7406 R12: 000000000000000b
R13: ffff888047d39e88 R14: 0000000000000000 R15: 1ffff11008fa73d1
FS:  00007f79e53a26c0(0000) GS:ffff88808c85e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bfe6f87b60 CR3: 000000001277b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1082 [inline]
 ext4_xattr_inode_dec_ref_all+0x7c0/0xec0 fs/ext4/xattr.c:1228
 ext4_xattr_delete_inode+0xb42/0xd10 fs/ext4/xattr.c:2952
 ext4_evict_inode+0xc31/0x10c0 fs/ext4/inode.c:284
 evict+0x624/0xb50 fs/inode.c:828
 ext4_orphan_cleanup+0xc7a/0x14c0 fs/ext4/orphan.c:472
 __ext4_fill_super fs/ext4/super.c:5701 [inline]
 ext4_fill_super+0x5cb7/0x65c0 fs/ext4/super.c:5824
 get_tree_bdev_flags+0x430/0x4f0 fs/super.c:1634
 vfs_get_tree+0x92/0x2a0 fs/super.c:1694
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3765 [inline]
 do_new_mount+0x319/0xdc0 fs/namespace.c:3841
 do_mount fs/namespace.c:4174 [inline]
 __do_sys_mount fs/namespace.c:4390 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4367
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f79e459e0ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f79e53a1e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f79e53a1ea0 RCX: 00007f79e459e0ca
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007f79e53a1e60
RBP: 0000200000000040 R08: 00007f79e53a1ea0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f79e53a1e60 R14: 000000000000047a R15: 0000200000000b40
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 4c 89 e7          	or     %cl,-0x19(%rcx,%rcx,4)
   4:	e8 85 13 96 ff       	call   0xff96138e
   9:	4d 8b 24 24          	mov    (%r12),%r12
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df
  17:	41 0f b6 04 07       	movzbl (%r15,%rax,1),%eax
  1c:	84 c0                	test   %al,%al
  1e:	75 73                	jne    0x93
  20:	41 8b 55 00          	mov    0x0(%r13),%edx
  24:	48 89 df             	mov    %rbx,%rdi
  27:	4c 89 e6             	mov    %r12,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 5f fe ff ff       	jmp    0xfffffe93
  34:	e8 15 f0 0d 09       	call   0x90df04e
  39:	44 89 e9             	mov    %r13d,%ecx
  3c:	80 e1 07             	and    $0x7,%cl
  3f:	80                   	.byte 0x80