__x64_sys_mkdir+0xf3/0x140
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
percpu ref (css_release) <= 0 (-2451) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#1: systemd-udevd/7693
Modules linked in:
CPU: 1 UID: 0 PID: 7693 Comm: systemd-udevd Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x3cc/0x480
Code: 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 9e 00 00 00 49 8b 75 e8 48 c7 c7 80 97 e2 84 e8 75 c5 e9 fe 90 <0f> 0b 90 90 e9 2b ff ff ff e8 f6 de 5f ff e9 9e fe ff ff e8 7c df
RSP: 0018:ffff88806cf08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff888035985280 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 7ffffffffffff66c R08: 0000000000000001 R09: ffffed100d9e4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880205ad980
R13: ffff8880205ad9a0 R14: 0000000000000002 R15: 0000000000000003
FS:  00007f556b5558c0(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056486c9b1c20 CR3: 000000000b6f0000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rcu_core+0x7c8/0x1800
 handle_softirqs+0x1b1/0x770
 __irq_exit_rcu+0xc4/0x100
 irq_exit_rcu+0x9/0x20
 sysvec_apic_timer_interrupt+0x70/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__seccomp_filter+0x530/0xfa0
Code: e8 45 ab fe ff 48 8b 7c 24 08 48 8d 74 24 48 e8 16 c9 ff ff 31 ff 89 c3 89 c6 e8 5b a6 fe ff 85 db 0f 85 cd 04 00 00 45 31 ed <e8> 1b ab fe ff 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 10 c7 00
RSP: 0018:ffff88803db17dd8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888019caf000 RCX: ffffffff81753876
RDX: ffff888035985280 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffed1003395e05
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffffffffffff
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 __secure_computing+0x1ac/0x290
 syscall_trace_enter+0x8d/0x240
 do_syscall_64+0x2ac/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f556ba148f7
Code: f0 ff ff 73 01 c3 48 8b 0d 96 f5 0b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 fe 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 69 f5 0b 00 f7 d8 64 89 01 48
RSP: 002b:00007fff1919d188 EFLAGS: 00000206 ORIG_RAX: 00000000000000fe
RAX: ffffffffffffffda RBX: 0000562ce152b270 RCX: 00007f556ba148f7
RDX: 0000000000000008 RSI: 0000562ce1d98600 RDI: 0000000000000009
RBP: 0000562ce1d9dde0 R08: 0000562cb9c0f660 R09: 0000000000000000
R10: 00007f556b5556c0 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000ca4 R15: 00007fff1919d250
 </TASK>
irq event stamp: 4678
hardirqs last  enabled at (4688): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (4695): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (3782): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (4071): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
percpu_ref_switch_to_atomic_rcu: percpu_ref_switch_to_atomic_rcu(): percpu_ref underflow slab kmalloc-64 start ffff8880205ad980 pointer offset 0 size 64
percpu_ref_switch_to_atomic_rcu: percpu_ref_switch_to_atomic_rcu(): percpu_ref underflow slab kmalloc-64 start ffff88800d016300 pointer offset 0 size 64
----------------
Code disassembly (best guess):
   0:	e8 45 ab fe ff       	callq  0xfffeab4a
   5:	48 8b 7c 24 08       	mov    0x8(%rsp),%rdi
   a:	48 8d 74 24 48       	lea    0x48(%rsp),%rsi
   f:	e8 16 c9 ff ff       	callq  0xffffc92a
  14:	31 ff                	xor    %edi,%edi
  16:	89 c3                	mov    %eax,%ebx
  18:	89 c6                	mov    %eax,%esi
  1a:	e8 5b a6 fe ff       	callq  0xfffea67a
  1f:	85 db                	test   %ebx,%ebx
  21:	0f 85 cd 04 00 00    	jne    0x4f4
  27:	45 31 ed             	xor    %r13d,%r13d
* 2a:	e8 1b ab fe ff       	callq  0xfffeab4a <-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df
  39:	48 03 44 24 10       	add    0x10(%rsp),%rax
  3e:	c7                   	.byte 0xc7