------------[ cut here ]------------
percpu ref (io_ring_ctx_ref_free) <= 0 (-4294967295) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#0: modprobe/3846
Modules linked in:
CPU: 0 UID: 0 PID: 3846 Comm: modprobe 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
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
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
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
RSP: 0018:ffff88806ce08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff888018b40000 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 7fffffff00000000 R08: 0000000000000001 R09: ffffed100d9c4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803b0a5600
R13: ffff88803b0a5620 R14: 0000000000000002 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ab63c37f4 CR3: 000000003b993000 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:__alloc_object+0x7/0x2c0
Code: 48 8b 02 48 c1 e8 02 83 e0 01 e9 f4 c3 0a 03 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 4c 8b 05 51 26 83 06 <41> 55 41 54 55 4d 85 c0 0f 84 12 01 00 00 81 e7 e0 0c 00 01 89 fe
RSP: 0018:ffff888009a67ad0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000002800
RDX: 0000000000000001 RSI: 0000000000000020 RDI: 0000000000002800
RBP: ffff888009a67b80 R08: ffff888008c4b780 R09: 0000000000000000
R10: ffffed100189b4c0 R11: 0000000000000000 R12: ffff88800c4da600
R13: 0000000000000020 R14: 0000000000000001 R15: ffff888008c41780
 __create_object+0x1d/0x80
 __kmalloc_cache_noprof+0x42a/0x690
 kmem_cache_free+0x134/0x540
 exit_mmap+0x47f/0xaa0
 mmput+0xd5/0x390
 do_exit+0x79d/0x2970
 do_group_exit+0xd3/0x2a0
 __x64_sys_exit_group+0x3e/0x50
 x64_sys_call+0x18c5/0x18d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faca7931699
Code: Unable to access opcode bytes at 0x7faca793166f.
RSP: 002b:00007ffc6b723d18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007faca7a26610 RCX: 00007faca7931699
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffff80 R09: 0000000000000001
R10: 0000000000000004 R11: 0000000000000246 R12: 00007faca7a26610
R13: 0000000000000001 R14: 00007faca7a26ae8 R15: 0000000000000000
 </TASK>
irq event stamp: 6554
hardirqs last  enabled at (6564): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (6571): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (5440): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (5871): [<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 ffff88803b0a5600 pointer offset 0 size 64
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
----------------
Code disassembly (best guess):
   0:	48 8b 02             	mov    (%rdx),%rax
   3:	48 c1 e8 02          	shr    $0x2,%rax
   7:	83 e0 01             	and    $0x1,%eax
   a:	e9 f4 c3 0a 03       	jmpq   0x30ac403
   f:	0f 1f 40 00          	nopl   0x0(%rax)
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	4c 8b 05 51 26 83 06 	mov    0x6832651(%rip),%r8        # 0x683267b
* 2a:	41 55                	push   %r13 <-- trapping instruction
  2c:	41 54                	push   %r12
  2e:	55                   	push   %rbp
  2f:	4d 85 c0             	test   %r8,%r8
  32:	0f 84 12 01 00 00    	je     0x14a
  38:	81 e7 e0 0c 00 01    	and    $0x1000ce0,%edi
  3e:	89 fe                	mov    %edi,%esi