loop0: detected capacity change from 32768 to 0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-00918-g95ec54a420b8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:53 [inline]
 should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:154
 should_failslab+0xac/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4072 [inline]
 slab_alloc_node mm/slub.c:4148 [inline]
 kmem_cache_alloc_noprof+0x70/0x380 mm/slub.c:4175
 __kernfs_new_node+0xd8/0x870 fs/kernfs/dir.c:624
 kernfs_new_node+0x137/0x240 fs/kernfs/dir.c:700
 kernfs_create_dir_ns+0x43/0x120 fs/kernfs/dir.c:1061
 sysfs_create_dir_ns+0x189/0x3a0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x435/0x8d0 lib/kobject.c:240
 kobject_add_varg lib/kobject.c:374 [inline]
 kobject_init_and_add+0x124/0x190 lib/kobject.c:457
 btrfs_sysfs_add_qgroups+0x117/0x2f0 fs/btrfs/sysfs.c:2614
 btrfs_quota_enable+0x285/0x2190 fs/btrfs/qgroup.c:1030
 btrfs_ioctl_quota_ctl+0x144/0x1c0 fs/btrfs/ioctl.c:3668
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 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: 0033:0x7f89c0d85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f89c1add038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f89c0f76080 RCX: 00007f89c0d85d29
RDX: 00000000200000c0 RSI: 00000000c0109428 RDI: 0000000000000003
RBP: 00007f89c1add090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f89c0f76080 R15: 00007ffd27495468
 </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: CPU: 0 PID: 5328 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: 5328 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-00918-g95ec54a420b8 #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 a3 6a 5c ff 90 48 c7 c7 80 5c 1b 8c 4c 89 e6 e8 83 0c 1d ff 90 <0f> 0b 90 90 bb fe ff ff ff eb 12 e8 82 6a 5c ff bb fe ff ff ff 4c
RSP: 0018:ffffc9000d197b28 EFLAGS: 00010246
RAX: 48655289196a4500 RBX: ffffffff8eebb360 RCX: ffff88801f170000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81602982 R09: fffffbfff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: ffffffff8c4c4e40
R13: 0000000000000000 R14: ffffffff8c4c4de0 R15: 0000000000000000
FS:  00007f89c1add6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7221f95ed8 CR3: 00000000437b6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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:322
 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:346
 __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:2589
 btrfs_sysfs_add_qgroups+0x2bf/0x2f0 fs/btrfs/sysfs.c:2628
 btrfs_quota_enable+0x285/0x2190 fs/btrfs/qgroup.c:1030
 btrfs_ioctl_quota_ctl+0x144/0x1c0 fs/btrfs/ioctl.c:3668
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 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: 0033:0x7f89c0d85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f89c1add038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f89c0f76080 RCX: 00007f89c0d85d29
RDX: 00000000200000c0 RSI: 00000000c0109428 RDI: 0000000000000003
RBP: 00007f89c1add090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f89c0f76080 R15: 00007ffd27495468
 </TASK>