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: CPU: 0 PID: 5116 at fs/kernfs/dir.c:1684 kernfs_remove_by_name_ns+0xfe/0x160 fs/kernfs/dir.c:1683 Modules linked in: CPU: 0 UID: 0 PID: 5116 Comm: syz-executor174 Not tainted 6.12.0-rc4-syzkaller-00085-g4e46774408d9 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:kernfs_remove_by_name_ns+0xfe/0x160 fs/kernfs/dir.c:1683 Code: 48 89 df e8 34 ee ff ff 48 89 df e8 bc 8d ff ff 31 db eb 2b e8 83 33 58 ff 90 48 c7 c7 40 dd 1b 8c 4c 89 e6 e8 03 2d 19 ff 90 <0f> 0b 90 90 bb fe ff ff ff eb 12 e8 62 33 58 ff bb fe ff ff ff 4c RSP: 0018:ffffc9000afe7b28 EFLAGS: 00010246 RAX: ba72896fcdc7d400 RBX: ffffffff8eebbf60 RCX: ffff888000a94880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8155d402 R09: 1ffff11003f8519a R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffffffff8c4d0bc0 R13: 0000000000000000 R14: ffffffff8c4d0b60 R15: 0000000000000000 FS: 000055556b7a8480(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005614b50bf0e0 CR3: 0000000040cc4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kernfs_remove_by_name include/linux/kernfs.h:625 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xfe/0x2c0 fs/sysfs/group.c:319 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:343 __kobject_del+0x84/0x310 lib/kobject.c:595 kobject_del+0x45/0x60 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x114/0x160 fs/btrfs/sysfs.c:2453 btrfs_sysfs_add_qgroups+0x2bf/0x2f0 fs/btrfs/sysfs.c:2492 btrfs_quota_enable+0x27c/0x2090 fs/btrfs/qgroup.c:1047 btrfs_ioctl_quota_ctl+0x144/0x1c0 fs/btrfs/ioctl.c:3763 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faf1d8eec59 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 1a 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffe7ded3f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007faf1d8eec59 RDX: 0000000020000200 RSI: 00000000c0109428 RDI: 0000000000000003 RBP: 00007fffe7ded400 R08: 00007fffe7ded197 R09: 0000000000000037 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fffe7ded450 R13: 00007fffe7ded43c R14: 431bde82d7b634db R15: 00007faf1d93001d