kobject: kobject_add_internal failed for qgroups (error: -12 parent: c9fe44da-de57-406a-8241-57ec7d4412cf) ------------[ cut here ]------------ kernfs: can not remove 'enabled', no directory WARNING: CPU: 1 PID: 6761 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 Modules linked in: CPU: 1 UID: 0 PID: 6761 Comm: syz.0.26 Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 lr : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 sp : ffff8000a35678b0 x29: ffff8000a35678b0 x28: ffff0000c544f200 x27: 1fffe0001ed91a05 x26: dfff800000000000 x25: ffff80008fdf5428 x24: 1ffff0001167e23c x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3f1240 x19: ffff80008b3f11e0 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008ae63d08 x15: ffff700011ede144 x14: 1ffff00011ede144 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ede144 x10: 0000000000ff0100 x9 : f2d7b4c702b3dc00 x8 : f2d7b4c702b3dc00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a35671f8 x4 : ffff80008f766be0 x3 : ffff80008054d314 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 (P) kernfs_remove_by_name include/linux/kernfs.h:633 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x29c fs/sysfs/group.c:322 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:346 __kobject_del+0x90/0x2d4 lib/kobject.c:595 kobject_del+0x48/0x68 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x100/0x14c fs/btrfs/sysfs.c:2610 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2649 btrfs_quota_enable+0x224/0x1c70 fs/btrfs/qgroup.c:1030 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3673 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5323 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 62832 hardirqs last enabled at (62831): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (62831): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (62832): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (62708): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (62706): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'inconsistent', no directory WARNING: CPU: 0 PID: 6761 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 Modules linked in: CPU: 0 UID: 0 PID: 6761 Comm: syz.0.26 Tainted: G W 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 lr : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 sp : ffff8000a35678b0 x29: ffff8000a35678b0 x28: ffff0000c544f200 x27: 1fffe0001ed91a05 x26: dfff800000000000 x25: ffff80008fdf5430 x24: 1ffff0001167e23c x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3f1260 x19: ffff80008b3f11e0 x18: 1fffe000337d4076 x17: ffff80008f66e000 x16: ffff80008aefc458 x15: 0000000000000001 x14: 1fffe000337d6af0 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093163c08 x10: 0000000000000003 x9 : f2d7b4c702b3dc00 x8 : f2d7b4c702b3dc00 x7 : ffff800080488a2c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b538ee0 x0 : 0000000000000001 Call trace: kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 (P) kernfs_remove_by_name include/linux/kernfs.h:633 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x29c fs/sysfs/group.c:322 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:346 __kobject_del+0x90/0x2d4 lib/kobject.c:595 kobject_del+0x48/0x68 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x100/0x14c fs/btrfs/sysfs.c:2610 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2649 btrfs_quota_enable+0x224/0x1c70 fs/btrfs/qgroup.c:1030 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3673 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5323 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 63168 hardirqs last enabled at (63167): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] hardirqs last enabled at (63167): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5149 hardirqs last disabled at (63168): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (63138): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (63138): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (62835): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'drop_subtree_threshold', no directory WARNING: CPU: 0 PID: 6761 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 Modules linked in: CPU: 0 UID: 0 PID: 6761 Comm: syz.0.26 Tainted: G W 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 lr : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 sp : ffff8000a35678b0 x29: ffff8000a35678b0 x28: ffff0000c544f200 x27: 1fffe0001ed91a05 x26: dfff800000000000 x25: ffff80008fdf5438 x24: 1ffff0001167e23c x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3f1280 x19: ffff80008b3f11e0 x18: 1fffe000337d4076 x17: ffff80008f66e000 x16: ffff80008aefc458 x15: 0000000000000001 x14: 1fffe000337d6af0 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093163c08 x10: 0000000000000003 x9 : f2d7b4c702b3dc00 x8 : f2d7b4c702b3dc00 x7 : ffff800080488a2c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b538ee0 x0 : 0000000000000001 Call trace: kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 (P) kernfs_remove_by_name include/linux/kernfs.h:633 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x29c fs/sysfs/group.c:322 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:346 __kobject_del+0x90/0x2d4 lib/kobject.c:595 kobject_del+0x48/0x68 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x100/0x14c fs/btrfs/sysfs.c:2610 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2649 btrfs_quota_enable+0x224/0x1c70 fs/btrfs/qgroup.c:1030 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3673 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5323 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 63328 hardirqs last enabled at (63327): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] hardirqs last enabled at (63327): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5149 hardirqs last disabled at (63328): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (63308): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (63308): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (63279): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'mode', no directory WARNING: CPU: 1 PID: 6761 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 Modules linked in: CPU: 1 UID: 0 PID: 6761 Comm: syz.0.26 Tainted: G W 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 lr : kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 sp : ffff8000a35678b0 x29: ffff8000a35678b0 x28: ffff0000c544f200 x27: 1fffe0001ed91a05 x26: dfff800000000000 x25: ffff80008fdf5440 x24: 1ffff0001167e23c x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3f12c0 x19: ffff80008b3f11e0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008aefc458 x15: 0000000000000001 x14: 1fffe000337db2f0 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093163c08 x10: 0000000000000003 x9 : f2d7b4c702b3dc00 x8 : f2d7b4c702b3dc00 x7 : ffff800080488a2c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b538ee0 x0 : 0000000000000001 Call trace: kernfs_remove_by_name_ns+0xd0/0x14c fs/kernfs/dir.c:1706 (P) kernfs_remove_by_name include/linux/kernfs.h:633 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x29c fs/sysfs/group.c:322 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:346 __kobject_del+0x90/0x2d4 lib/kobject.c:595 kobject_del+0x48/0x68 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x100/0x14c fs/btrfs/sysfs.c:2610 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2649 btrfs_quota_enable+0x224/0x1c70 fs/btrfs/qgroup.c:1030 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3673 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5323 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 63496 hardirqs last enabled at (63495): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1544 [inline] hardirqs last enabled at (63495): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5149 hardirqs last disabled at (63496): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (63468): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (63468): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (63331): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---