RDX: 0000200000000580 RSI: 00000000c0109428 RDI: 0000000000000003 RBP: 00007f052a746090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f052c736038 R14: 00007f052c735fa0 R15: 00007ffd46701aa8 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: fs/kernfs/dir.c:1710 at kernfs_remove_by_name_ns+0xc7/0x130 fs/kernfs/dir.c:1709, CPU#1: syz.1.662/14563 Modules linked in: CPU: 1 UID: 0 PID: 14563 Comm: syz.1.662 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:kernfs_remove_by_name_ns+0xca/0x130 fs/kernfs/dir.c:1709 Code: 8c c8 ff f0 41 ff 06 4c 89 f7 e8 e1 f1 ff ff 4c 89 f7 e8 e9 96 ff ff 31 ed eb 25 e8 a0 53 66 ff 48 8d 3d c9 8d 87 0c 4c 89 f6 <67> 48 0f b9 3a bd fe ff ff ff eb 12 e8 85 53 66 ff bd fe ff ff ff RSP: 0018:ffffc9000551fb10 EFLAGS: 00010293 RAX: ffffffff82595650 RBX: ffffffff8b2f9780 RCX: ffff88802e9e8000 RDX: 0000000000000000 RSI: ffffffff8b2f97e0 RDI: ffffffff8ee0e420 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1017124923 R12: 0000000000000000 R13: ffffffff8db6e9a0 R14: ffffffff8b2f97e0 R15: 0000000000000000 FS: 00007f052a7466c0(0000) GS:ffff888126def000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f763fff CR3: 0000000055a70000 CR4: 00000000003526f0 Call Trace: kernfs_remove_by_name include/linux/kernfs.h:633 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xfc/0x2f0 fs/sysfs/group.c:328 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:352 __kobject_del+0x84/0x330 lib/kobject.c:595 kobject_del+0x45/0x60 lib/kobject.c:627 btrfs_sysfs_del_qgroups+0x115/0x160 fs/btrfs/sysfs.c:2672 btrfs_sysfs_add_qgroups+0x286/0x2b0 fs/btrfs/sysfs.c:2711 btrfs_quota_enable+0x25d/0x28f0 fs/btrfs/qgroup.c:1002 btrfs_ioctl_quota_ctl+0x186/0x1c0 fs/btrfs/ioctl.c:3613 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f052c4df749 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:00007f052a746038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f052c735fa0 RCX: 00007f052c4df749 RDX: 0000200000000580 RSI: 00000000c0109428 RDI: 0000000000000003 RBP: 00007f052a746090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f052c736038 R14: 00007f052c735fa0 R15: 00007ffd46701aa8 ---------------- Code disassembly (best guess): 0: 8c c8 mov %cs,%eax 2: ff f0 push %rax 4: 41 ff 06 incl (%r14) 7: 4c 89 f7 mov %r14,%rdi a: e8 e1 f1 ff ff call 0xfffff1f0 f: 4c 89 f7 mov %r14,%rdi 12: e8 e9 96 ff ff call 0xffff9700 17: 31 ed xor %ebp,%ebp 19: eb 25 jmp 0x40 1b: e8 a0 53 66 ff call 0xff6653c0 20: 48 8d 3d c9 8d 87 0c lea 0xc878dc9(%rip),%rdi # 0xc878df0 27: 4c 89 f6 mov %r14,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: bd fe ff ff ff mov $0xfffffffe,%ebp 34: eb 12 jmp 0x48 36: e8 85 53 66 ff call 0xff6653c0 3b: bd fe ff ff ff mov $0xfffffffe,%ebp