Bluetooth: hci4: command tx timeout
Bluetooth: hci1: command tx timeout
Bluetooth: hci3: command tx timeout
------------[ cut here ]------------
percpu ref (css_release) <= 0 (-7) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#0: modprobe/906
Modules linked in:
CPU: 0 UID: 0 PID: 906 Comm: modprobe Tainted: G        W           6.17.0-rc4-next-20250901 #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 c0 99 e2 84 e8 25 ac e9 fe 90 <0f> 0b 90 90 e9 2b ff ff ff e8 56 de 5f ff e9 9e fe ff ff e8 dc de
RSP: 0018:ffff88806ce08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff88801652b700 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 7ffffffffffffff8 R08: 0000000000000001 R09: ffffed100d9c117f
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888009ddf180
R13: ffff888009ddf1a0 R14: 0000000000000002 R15: 0000000000000003
FS:  00007f70575da540(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f70576774a0 CR3: 000000000cc84000 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:__x64_sys_fcntl+0xd2/0x1f0
Code: 00 00 00 00 fc ff df 48 83 e5 fc 48 8d 7d 40 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e f5 00 00 00 44 8b 65 40 <31> ff 41 81 e4 00 40 00 00 44 89 e6 e8 6d 20 b9 ff 45 85 e4 0f 85
RSP: 0018:ffff888044b2fef8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888017401340 RCX: ffffffff81bad124
RDX: 1ffff11002e80270 RSI: ffffffff81bad132 RDI: ffff888017401380
RBP: ffff888017401340 R08: 0000000000000000 R09: ffffed1002ec1f80
R10: ffff888017401340 R11: 0000000000000000 R12: 000000000c4a801d
R13: 0000000000000003 R14: 00005651597ce402 R15: 0000000000000000
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f70576f6e70
Code: 01 00 0f 1f 84 00 00 00 00 00 48 83 ec 18 64 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 fe 09 74 27 b8 48 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 40 48 8b 4c 24 08 64 48 2b 0c 25 28 00 00 00
RSP: 002b:00007ffdc2c7f1c0 EFLAGS: 00000297 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f70576f6e70
RDX: 00005651597ce402 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 00007ffdc2c7f110
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000008
R13: 0000000000000000 R14: 00007ffdc2c7f320 R15: 000056519119e560
 </TASK>
irq event stamp: 5200
hardirqs last  enabled at (5208): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (5217): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (3832): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (4335): [<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 ffff888009ddf180 pointer offset 0 size 64
Bluetooth: hci0: command tx timeout
Bluetooth: hci2: command tx timeout
Bluetooth: hci4: command tx timeout
Bluetooth: hci6: command tx timeout
Bluetooth: hci5: command tx timeout
Bluetooth: hci7: command tx timeout
Bluetooth: hci3: command tx timeout
Bluetooth: hci1: command tx timeout
----------------
Code disassembly (best guess), 6 bytes skipped:
   0:	df 48 83             	fisttps -0x7d(%rax)
   3:	e5 fc                	in     $0xfc,%eax
   5:	48 8d 7d 40          	lea    0x40(%rbp),%rdi
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	48 c1 ea 03          	shr    $0x3,%rdx
  10:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  14:	84 c0                	test   %al,%al
  16:	74 08                	je     0x20
  18:	3c 03                	cmp    $0x3,%al
  1a:	0f 8e f5 00 00 00    	jle    0x115
  20:	44 8b 65 40          	mov    0x40(%rbp),%r12d
* 24:	31 ff                	xor    %edi,%edi <-- trapping instruction
  26:	41 81 e4 00 40 00 00 	and    $0x4000,%r12d
  2d:	44 89 e6             	mov    %r12d,%esi
  30:	e8 6d 20 b9 ff       	callq  0xffb920a2
  35:	45 85 e4             	test   %r12d,%r12d
  38:	0f                   	.byte 0xf
  39:	85                   	.byte 0x85