R13: 00007f79ad216038 R14: 00007f79ad215fa0 R15: 00007fff0ee3b558
 </TASK>
kobject: kobject_add_internal failed for qgroups (error: -12 parent: 395ef67a-297e-477c-816d-cd80a5b93e5d)
------------[ cut here ]------------
kernfs: can not remove 'enabled', no directory
WARNING: fs/kernfs/dir.c:1787 at kernfs_remove_by_name_ns+0xd8/0x140 fs/kernfs/dir.c:1786, CPU#1: syz.1.695/9217
Modules linked in:
CPU: 1 UID: 0 PID: 9217 Comm: syz.1.695 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:kernfs_remove_by_name_ns+0xdb/0x140 fs/kernfs/dir.c:1786
Code: 8d c0 ff f0 41 ff 07 4c 89 ff e8 f0 ee ff ff 4c 89 ff e8 58 8d ff ff 31 ed eb 25 e8 ef 4d 55 ff 48 8d 3d 68 a2 c6 0d 4c 89 fe <67> 48 0f b9 3a bd fe ff ff ff eb 1a e8 d4 4d 55 ff bd fe ff ff ff
RSP: 0018:ffffc9000478fb08 EFLAGS: 00010293
RAX: ffffffff827073e1 RBX: ffffffff8c16d4a0 RCX: ffff888037183d80
RDX: 0000000000000000 RSI: ffffffff8c16d500 RDI: ffffffff90371650
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cfd250 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8c16d500
FS:  00007f79addab6c0(0000) GS:ffff88812538d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb10b29e9c CR3: 0000000059902000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 kernfs_remove_by_name include/linux/kernfs.h:639 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0xfc/0x2e0 fs/sysfs/group.c:328
 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:352
 __kobject_del+0x84/0x330 lib/kobject.c:595
 kobject_del+0x45/0x60 lib/kobject.c:627
 btrfs_sysfs_del_qgroups+0x115/0x160 fs/btrfs/sysfs.c:2579
 btrfs_sysfs_add_qgroups+0x28b/0x2e0 fs/btrfs/sysfs.c:2618
 btrfs_quota_enable+0x282/0x2850 fs/btrfs/qgroup.c:1034
 btrfs_ioctl_quota_ctl+0x183/0x1c0 fs/btrfs/ioctl.c:3541
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f79acf9cdd9
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:00007f79addab028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f79ad215fa0 RCX: 00007f79acf9cdd9
RDX: 00002000000000c0 RSI: 00000000c0109428 RDI: 0000000000000004
RBP: 00007f79addab090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f79ad216038 R14: 00007f79ad215fa0 R15: 00007fff0ee3b558
 </TASK>
----------------
Code disassembly (best guess):
   0:	8d                   	lea    (bad),%eax
   1:	c0 ff f0             	sar    $0xf0,%bh
   4:	41 ff 07             	incl   (%r15)
   7:	4c 89 ff             	mov    %r15,%rdi
   a:	e8 f0 ee ff ff       	call   0xffffeeff
   f:	4c 89 ff             	mov    %r15,%rdi
  12:	e8 58 8d ff ff       	call   0xffff8d6f
  17:	31 ed                	xor    %ebp,%ebp
  19:	eb 25                	jmp    0x40
  1b:	e8 ef 4d 55 ff       	call   0xff554e0f
  20:	48 8d 3d 68 a2 c6 0d 	lea    0xdc6a268(%rip),%rdi        # 0xdc6a28f
  27:	4c 89 fe             	mov    %r15,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bd fe ff ff ff       	mov    $0xfffffffe,%ebp
  34:	eb 1a                	jmp    0x50
  36:	e8 d4 4d 55 ff       	call   0xff554e0f
  3b:	bd fe ff ff ff       	mov    $0xfffffffe,%ebp