kobject: kobject_add_internal failed for qgroups (error: -12 parent: 7e32c2af-f87a-45a1-bcba-64dea7c56a53) ------------[ cut here ]------------ kernfs: can not remove 'enabled', no directory WARNING: CPU: 1 PID: 8406 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: 8406 Comm: syz.0.304 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 63400005 (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 : ffff80009fac7890 x29: ffff80009fac7890 x28: ffff80009fac7b90 x27: 1fffe0001bd32205 x26: dfff800000000000 x25: ffff80008ff7cb28 x24: 1ffff000116a5638 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b52b220 x19: ffff80008b52b1c0 x18: 0000000000000000 x17: 7261702032312d20 x16: ffff80008b021028 x15: 0000000000000001 x14: 1ffff00013f58e80 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 23b343ab018db800 x8 : 23b343ab018db800 x7 : ffff800080565b6c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807e08b4 x2 : 0000000000000002 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:2616 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2655 btrfs_quota_enable+0x214/0x2208 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5318 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 346196 hardirqs last enabled at (346195): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (346196): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (346092): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (346090): [] 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: 1 PID: 8406 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: 8406 Comm: syz.0.304 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 63400005 (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 : ffff80009fac7890 x29: ffff80009fac7890 x28: ffff80009fac7b90 x27: 1fffe0001bd32205 x26: dfff800000000000 x25: ffff80008ff7cb30 x24: 1ffff000116a5638 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b52b240 x19: ffff80008b52b1c0 x18: 1fffe00033793888 x17: ffff80008f7ee000 x16: ffff80008b020f18 x15: 0000000000000001 x14: 1fffe00033796300 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093339c28 x10: 0000000000000003 x9 : 23b343ab018db800 x8 : 23b343ab018db800 x7 : ffff800080493090 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b678a40 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:2616 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2655 btrfs_quota_enable+0x214/0x2208 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5318 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 346430 hardirqs last enabled at (346429): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline] hardirqs last enabled at (346429): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5105 hardirqs last disabled at (346430): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (346414): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (346414): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (346199): [] __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: 8406 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: 8406 Comm: syz.0.304 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 63400005 (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 : ffff80009fac7890 x29: ffff80009fac7890 x28: ffff80009fac7b90 x27: 1fffe0001bd32205 x26: dfff800000000000 x25: ffff80008ff7cb38 x24: 1ffff000116a5638 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b52b260 x19: ffff80008b52b1c0 x18: 1fffe00033793888 x17: ffff80008f7ee000 x16: ffff80008b021028 x15: 0000000000000001 x14: 1ffff00013f58e80 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 23b343ab018db800 x8 : 23b343ab018db800 x7 : ffff800080565b6c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807e08b4 x2 : 0000000000000002 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:2616 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2655 btrfs_quota_enable+0x214/0x2208 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5318 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 346486 hardirqs last enabled at (346485): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (346486): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (346470): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (346470): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (346433): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'mode', no directory WARNING: CPU: 1 PID: 8406 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: 8406 Comm: syz.0.304 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 63400005 (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 : ffff80009fac7890 x29: ffff80009fac7890 x28: ffff80009fac7b90 x27: 1fffe0001bd32205 x26: dfff800000000000 x25: ffff80008ff7cb40 x24: 1ffff000116a5638 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b52b2a0 x19: ffff80008b52b1c0 x18: 1fffe00033793888 x17: ffff80008f7ee000 x16: ffff80008b021028 x15: 0000000000000001 x14: 1ffff00013f58e80 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 23b343ab018db800 x8 : 23b343ab018db800 x7 : ffff800080565b6c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807e08b4 x2 : 0000000000000002 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:2616 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2655 btrfs_quota_enable+0x214/0x2208 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5318 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 346708 hardirqs last enabled at (346707): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (346708): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (346694): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (346694): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (346489): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0): last unmount of filesystem 7e32c2af-f87a-45a1-bcba-64dea7c56a53