------------[ cut here ]------------
percpu ref (css_release) <= 0 (0) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#0: systemd/1
Modules linked in:
CPU: 0 UID: 0 PID: 1 Comm: systemd 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:ffff88806ce08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff8880094f8000 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 8000000000000000 R08: 0000000000000001 R09: ffffed100d9c117f
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803c72a800
R13: ffff88803c72a820 R14: 0000000000000002 R15: 0000000000000003
FS:  00007f37c6f94900(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005641ec5aa170 CR3: 000000000ef2f000 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:lock_acquire+0x122/0x2f0
Code: 00 00 65 8b 05 b7 92 32 06 85 c0 0f 85 b6 00 00 00 65 48 8b 05 f7 52 32 06 8b 90 54 0a 00 00 85 d2 0f 85 a0 00 00 00 9c 41 5f <fa> 65 ff 05 8e 92 32 06 6a 00 41 81 e7 00 02 00 00 41 89 d8 44 89
RSP: 0018:ffff8880095477b0 EFLAGS: 00000246
RAX: ffff8880094f8000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8135841d RDI: fffffbfff0b838ec
RBP: ffffffff85c1c760 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000003be53 R11: 00000000000c5e52 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 unwind_next_frame+0xcd/0x2540
 arch_stack_walk+0x86/0xf0
 stack_trace_save+0x8e/0xc0
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 __kasan_slab_alloc+0x59/0x70
 kmem_cache_alloc_noprof+0x205/0x690
 __alloc_object+0x2b/0x2c0
 __create_object+0x1d/0x80
 kmem_cache_alloc_noprof+0x414/0x690
 getname_flags.part.0+0x48/0x540
 getname_flags+0x95/0xe0
 __do_sys_newstat+0x76/0x120
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f37c77613a6
Code: 00 00 75 05 48 83 c4 18 c3 e8 96 f2 01 00 66 0f 1f 44 00 00 41 89 f8 48 89 f7 48 89 d6 41 83 f8 01 77 29 b8 04 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 02 c3 90 48 8b 15 b9 fa 0c 00 f7 d8 64 89 02
RSP: 002b:00007ffd7e57dd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f37c77613a6
RDX: 00007ffd7e57dd90 RSI: 00007ffd7e57dd90 RDI: 00007f37c77fe4be
RBP: 00007f37c77fe4be R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ffd7e57ded0 R15: 000056420e15fee0
 </TASK>
irq event stamp: 6401988
hardirqs last  enabled at (6401996): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (6402005): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (6400750): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (6400979): [<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 ffff88803c72a800 pointer offset 0 size 64
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	65 8b 05 b7 92 32 06 	mov    %gs:0x63292b7(%rip),%eax        # 0x63292c0
   9:	85 c0                	test   %eax,%eax
   b:	0f 85 b6 00 00 00    	jne    0xc7
  11:	65 48 8b 05 f7 52 32 	mov    %gs:0x63252f7(%rip),%rax        # 0x6325310
  18:	06
  19:	8b 90 54 0a 00 00    	mov    0xa54(%rax),%edx
  1f:	85 d2                	test   %edx,%edx
  21:	0f 85 a0 00 00 00    	jne    0xc7
  27:	9c                   	pushfq
  28:	41 5f                	pop    %r15
* 2a:	fa                   	cli <-- trapping instruction
  2b:	65 ff 05 8e 92 32 06 	incl   %gs:0x632928e(%rip)        # 0x63292c0
  32:	6a 00                	pushq  $0x0
  34:	41 81 e7 00 02 00 00 	and    $0x200,%r15d
  3b:	41 89 d8             	mov    %ebx,%r8d
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89