kernfs: can not remove 'enabled', no directory
WARNING: CPU: 1 PID: 27718 at fs/kernfs/dir.c:1674 kernfs_remove_by_name_ns+0x110/0x130 fs/kernfs/dir.c:1674
Modules linked in:
CPU: 1 PID: 27718 Comm: syz-executor.2 Not tainted 6.8.0-rc2-syzkaller-00397-g56897d51886f #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:kernfs_remove_by_name_ns+0x110/0x130 fs/kernfs/dir.c:1674
Code: 6a ff bb fe ff ff ff 89 d8 5b 5d 41 5c 41 5d c3 cc cc cc cc e8 c1 e9 6a ff 90 48 c7 c7 a0 8c 00 8b 4c 89 e6 e8 b1 6b 2f ff 90 <0f> 0b 90 90 eb cd e8 d5 78 c5 ff e9 54 ff ff ff e8 cb 78 c5 ff e9
RSP: 0018:ffffc90024887910 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90028c00000
RDX: 0000000000040000 RSI: ffffffff81505f16 RDI: 0000000000000001
RBP: ffffffff8dd20b40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: ffffffff8b361800
R13: 0000000000000000 R14: ffffffff8b3616e0 R15: ffff888049e5d798
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5f02b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002d82a000 CR3: 000000004bb46000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kernfs_remove_by_name include/linux/kernfs.h:623 [inline]
 remove_files+0x96/0x1c0 fs/sysfs/group.c:28
 sysfs_remove_group+0x8b/0x180 fs/sysfs/group.c:292
 sysfs_remove_groups fs/sysfs/group.c:316 [inline]
 sysfs_remove_groups+0x60/0xa0 fs/sysfs/group.c:308
 __kobject_del+0x83/0x1f0 lib/kobject.c:592
 kobject_del lib/kobject.c:624 [inline]
 kobject_del+0x3f/0x60 lib/kobject.c:616
 btrfs_sysfs_del_qgroups fs/btrfs/sysfs.c:2325 [inline]
 btrfs_sysfs_del_qgroups+0x119/0x1a0 fs/btrfs/sysfs.c:2313
 btrfs_sysfs_add_qgroups+0x21c/0x2b0 fs/btrfs/sysfs.c:2364
 btrfs_quota_enable+0x35d/0x1ef0 fs/btrfs/qgroup.c:1037
 btrfs_ioctl_quota_ctl fs/btrfs/ioctl.c:3721 [inline]
 btrfs_ioctl+0x692c/0x8180 fs/btrfs/ioctl.c:4685
 __do_compat_sys_ioctl+0x2c3/0x330 fs/ioctl.c:971
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x7c/0x120 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x33/0x80 arch/x86/entry/common.c:346
 entry_SYSENTER_compat_after_hwframe+0x7c/0x86
RIP: 0023:0xf7308579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5f025ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c0109428
RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi