rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-....
 } 2670 jiffies s: 23205 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
NMI backtrace for cpu 0
CPU: 0 PID: 5298 Comm: kworker/0:4 Not tainted 6.7.0-rc5-syzkaller-00172-g933bb7b878dd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: usb_hub_wq hub_event
RIP: 0010:io_serial_in+0x87/0xa0 drivers/tty/serial/8250/8250_port.c:411
Code: 70 c7 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 16 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 e8 cc fa 14 ff eb a6 e8 25 fb 14 ff eb e3
RSP: 0018:ffffc900000073c8 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff828682a0 RDI: ffffffff8c154fa0
RBP: ffffffff8c154f60 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 205d304320202020 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff182aa46 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555fc7818 CR3: 000000013bac6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_in drivers/tty/serial/8250/8250.h:117 [inline]
 serial_lsr_in drivers/tty/serial/8250/8250.h:139 [inline]
 wait_for_lsr+0xd7/0x180 drivers/tty/serial/8250/8250_port.c:2081
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3366 [inline]
 serial8250_console_write+0xc79/0x1060 drivers/tty/serial/8250/8250_port.c:3444
 console_emit_next_record kernel/printk/printk.c:2901 [inline]
 console_flush_all+0x4d5/0xd50 kernel/printk/printk.c:2967
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4850 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861
 __dev_printk+0xf5/0x270 drivers/base/core.c:4873
 _dev_err+0xe5/0x120 drivers/base/core.c:4916
 wdm_int_callback+0x7d1/0xaa0 drivers/usb/class/cdc-wdm.c:276
 __usb_hcd_giveback_urb+0x359/0x5c0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x389/0x430 drivers/usb/core/hcd.c:1733
 dummy_timer+0x1415/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 call_timer_fn+0x193/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x20a/0x94b kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:console_flush_all+0xa0c/0xd50 kernel/printk/printk.c:2973
Code: e8 f9 59 23 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 77 9f 1c 00 48 85 db 0f 85 74 01 00 00 e8 d9 a3 1c 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 4b 02 00 00 41
RSP: 0018:ffffc90001f4f558 EFLAGS: 00000246
RAX: fffff520003e9ed2 RBX: 0000000000000000 RCX: ffffc9000c81c000
RDX: 0000000000040000 RSI: ffffffff81314f17 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d304320202020 R12: 0000000000000001
R13: ffffffff88357b58 R14: ffffffff88357b00 R15: ffffc90001f4f690
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4850 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861
 __dev_printk+0xf5/0x270 drivers/base/core.c:4873
 _dev_err+0xe5/0x120 drivers/base/core.c:4916
 hub_port_init+0x7e4/0x3a50 drivers/usb/core/hub.c:4966
 hub_port_connect drivers/usb/core/hub.c:5394 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
 port_event drivers/usb/core/hub.c:5765 [inline]
 hub_event+0x2c20/0x4f40 drivers/usb/core/hub.c:5847
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
yealink 6-1:36.0: urb_ctl_callback - urb status -71
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: wdm_int_callback - usb_submit_urb failed with result -1
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_irq_callback - urb status -71
yealink 6-1:36.0: unexpected response 0
yealink 6-1:36.0: urb_ctl_callback - urb status -71
yealink 6-1:36.0: urb_ctl_callback - usb_submit_urb failed -19
usb 3-1: new high-speed USB device number 88 using dummy_hcd
usb 3-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Product: syz
usb 3-1: Manufacturer: syz
usb 3-1: SerialNumber: syz
usb 3-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
usb 3-1: USB disconnect, device number 88
cdc_ether 6-1:1.0 usb0: CDC: unexpected notification 0e!
cdc_ether 6-1:1.0 usb0: CDC: unexpected notification d7!
cdc_ether 6-1:1.0 usb0: CDC: unexpected notification 03!
usb 3-1: ath9k_htc: USB layer deinitialized
usb 3-1: new high-speed USB device number 89 using dummy_hcd
usb 3-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Product: syz
usb 3-1: Manufacturer: syz
usb 3-1: SerialNumber: syz
usb 3-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
usb 4-1: USB disconnect, device number 18