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: 8602 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: 8602 Comm: syz.1.420 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff80009e0a7890 x29: ffff80009e0a7890 x28: 0000000000000001 x27: 1fffe0002079aa09 x26: dfff800000000000 x25: ffff80008fd3eae8 x24: 1ffff00011662448 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3122a0 x19: ffff80008b312240 x18: 00000000ffffffff x17: 7261702032312d20 x16: ffff800082defcc0 x15: 0000000000000001 x14: 1ffff00013c14e84 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000001431 x10: 0000000000ff0100 x9 : 488850b829129800 x8 : 488850b829129800 x7 : ffff800080565b88 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d6f80 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:2620 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2659 btrfs_quota_enable+0x210/0x2438 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5333 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c 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:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 200 hardirqs last enabled at (199): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (200): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (90): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (88): [] 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: 8602 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: 8602 Comm: syz.1.420 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff80009e0a7890 x29: ffff80009e0a7890 x28: 0000000000000001 x27: 1fffe0002079aa09 x26: dfff800000000000 x25: ffff80008fd3eaf0 x24: 1ffff00011662448 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3122c0 x19: ffff80008b312240 x18: 00000000ffffffff x17: 7261702032312d20 x16: ffff800082defcc0 x15: 0000000000000001 x14: 1ffff00013c14e84 x13: 0000000000000000 x12: 0000000000000000 x11: 000000000000147d x10: 0000000000ff0100 x9 : 488850b829129800 x8 : 488850b829129800 x7 : ffff800080565b88 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d6f80 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:2620 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2659 btrfs_quota_enable+0x210/0x2438 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5333 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c 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:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 288 hardirqs last enabled at (287): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (288): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (278): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (278): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (203): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'drop_subtree_threshold', no directory WARNING: CPU: 0 PID: 8602 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: 8602 Comm: syz.1.420 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff80009e0a7890 x29: ffff80009e0a7890 x28: 0000000000000001 x27: 1fffe0002079aa09 x26: dfff800000000000 x25: ffff80008fd3eaf8 x24: 1ffff00011662448 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b3122e0 x19: ffff80008b312240 x18: 00000000ffffffff x17: 7261702032312d20 x16: ffff800082defcc0 x15: 0000000000000001 x14: 1ffff00013c14e84 x13: 0000000000000000 x12: 0000000000000000 x11: 00000000000014ca x10: 0000000000ff0100 x9 : 488850b829129800 x8 : 488850b829129800 x7 : ffff800080565b88 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d6f80 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:2620 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2659 btrfs_quota_enable+0x210/0x2438 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5333 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c 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:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 616 hardirqs last enabled at (615): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (616): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (606): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (606): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (291): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'mode', no directory WARNING: CPU: 0 PID: 8602 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: 8602 Comm: syz.1.420 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff80009e0a7890 x29: ffff80009e0a7890 x28: 0000000000000001 x27: 1fffe0002079aa09 x26: dfff800000000000 x25: ffff80008fd3eb00 x24: 1ffff00011662448 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff80008b312320 x19: ffff80008b312240 x18: 00000000ffffffff x17: 7261702032312d20 x16: ffff800082defcc0 x15: 0000000000000001 x14: 1ffff00013c14e48 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000001517 x10: 0000000000ff0100 x9 : 488850b829129800 x8 : 488850b829129800 x7 : ffff800080565b88 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 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:2620 btrfs_sysfs_add_qgroups+0x238/0x268 fs/btrfs/sysfs.c:2659 btrfs_quota_enable+0x210/0x2438 fs/btrfs/qgroup.c:1022 btrfs_ioctl_quota_ctl+0x178/0x1bc fs/btrfs/ioctl.c:3667 btrfs_ioctl+0x86c/0xc3c fs/btrfs/ioctl.c:5333 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c 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:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 678 hardirqs last enabled at (677): [] vprintk_store+0x898/0xac8 kernel/printk/printk.c:2329 hardirqs last disabled at (678): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (668): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (668): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (619): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---