yealink 9-1:36.0: urb_irq_callback - urb status -71
yealink 9-1:36.0: unexpected response 0
yealink 9-1:36.0: urb_ctl_callback - urb status -71
------------[ cut here ]------------
1
WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:1049, CPU#0: kworker/0:5/5934
Modules linked in:
CPU: 0 UID: 0 PID: 5934 Comm: kworker/0:5 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:1049
Code: 88 61 01 00 00 be 04 00 00 00 48 c7 c7 80 53 1e 9b e8 f0 bf 87 00 b8 01 00 00 00 87 05 25 7e 30 19 85 c0 0f 85 3d 01 00 00 90 <0f> 0b 90 48 c7 c3 04 16 da 90 48 81 fd 80 2b 7f 8e 74 5a 48 b8 00
RSP: 0000:ffffc90000007df8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000002904 RCX: ffffffff81edd550
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9b1e5380
RBP: ffffffff8e7f2b80 R08: 0000000000000001 R09: fffffbfff363ca70
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1c82250
R13: 0000000000000246 R14: ffffffff8e40c108 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888124335000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c68e89b23 CR3: 00000000750d6000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:1012 [inline]
 rcu_core+0x2cb/0x10d0 kernel/rcu/tree.c:2864
 handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_flush_one_record+0xac3/0xe50 kernel/printk/printk.c:3270
Code: 00 e8 21 58 29 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 cf 53 21 00 48 85 ed 0f 85 d7 01 00 00 e8 e1 58 21 00 fb 4c 89 e8 <48> c1 e8 03 42 80 3c 38 00 0f 85 64 03 00 00 48 8b 0c 24 48 8b 6b
RSP: 0000:ffffc9000494f390 EFLAGS: 00000246
RAX: ffffffff8f514918 RBX: ffffffff8f5148c0 RCX: ffffc9001982b000
RDX: 0000000000100000 RSI: ffffffff81e79fdf RDI: ffff88801f304980
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000006d78
R13: ffffffff8f514918 R14: ffffc9000494f410 R15: dffffc0000000000
 console_flush_all kernel/printk/printk.c:3343 [inline]
 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
 console_unlock+0x103/0x260 kernel/printk/printk.c:3413
 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479
 dev_vprintk_emit+0x394/0x3e0 drivers/base/core.c:4914
 dev_printk_emit+0xd2/0x10d drivers/base/core.c:4925
 __dev_printk+0xcb/0x100 drivers/base/core.c:4937
 _dev_info+0xef/0x127 drivers/base/core.c:4983
 hub_port_init.cold+0x323/0x374 drivers/usb/core/hub.c:4996
 hub_port_connect drivers/usb/core/hub.c:5496 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x2f27/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x19a0 kernel/workqueue.c:3288
 process_scheduled_works kernel/workqueue.c:3371 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3452
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 e8                	add    %ch,%al
   2:	21 58 29             	and    %ebx,0x29(%rax)
   5:	00 9c 5d 81 e5 00 02 	add    %bl,0x200e581(%rbp,%rbx,2)
   c:	00 00                	add    %al,(%rax)
   e:	31 ff                	xor    %edi,%edi
  10:	48 89 ee             	mov    %rbp,%rsi
  13:	e8 cf 53 21 00       	call   0x2153e7
  18:	48 85 ed             	test   %rbp,%rbp
  1b:	0f 85 d7 01 00 00    	jne    0x1f8
  21:	e8 e1 58 21 00       	call   0x215907
  26:	fb                   	sti
  27:	4c 89 e8             	mov    %r13,%rax
* 2a:	48 c1 e8 03          	shr    $0x3,%rax <-- trapping instruction
  2e:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  33:	0f 85 64 03 00 00    	jne    0x39d
  39:	48 8b 0c 24          	mov    (%rsp),%rcx
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b
  3f:	6b                   	.byte 0x6b