rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-.... } 2648 jiffies s: 7053 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 PID: 5242 Comm: kworker/0:3 Not tainted 6.7.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: events request_firmware_work_func
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:417
Code: 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 18 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 e8 e5 09 15 ff eb a4 e8 3e 0a 15 ff eb e1 66
RSP: 0018:ffffc90000007420 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff82865d35 RDI: ffffffff8c175f60
RBP: ffffffff8c175f20 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 205d323254202020 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c175f70 R15: 0000000000000018
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a15dd5440 CR3: 0000000111f8a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_out drivers/tty/serial/8250/8250.h:122 [inline]
 serial8250_clear_IER+0x98/0xb0 drivers/tty/serial/8250/8250_port.c:710
 serial8250_console_write+0x18e/0x1060 drivers/tty/serial/8250/8250_port.c:3409
 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_warn+0xe5/0x120 drivers/base/core.c:4917
 usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1771
 __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:645
RIP: 0010:console_flush_all+0xa0c/0xd50 kernel/printk/printk.c:2973
Code: e8 a9 59 23 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 07 9f 1c 00 48 85 db 0f 85 74 01 00 00 e8 69 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:ffffc90001cff558 EFLAGS: 00000293
RAX: fffff5200039fed2 RBX: 0000000000000000 RCX: ffffffff81314f39
RDX: ffff888101f20000 RSI: ffffffff81314f47 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d304320202020 R12: 0000000000000001
R13: ffffffff88357098 R14: ffffffff88357040 R15: ffffc90001cff690
 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
 ath9k_init_htc_services.constprop.0+0xf1/0x820 drivers/net/wireless/ath/ath9k/htc_drv_init.c:220
 ath9k_htc_probe_device+0x23f/0x25f0 drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
 ath9k_htc_hw_init+0x33/0x70 drivers/net/wireless/ath/ath9k/htc_hst.c:529
 ath9k_hif_usb_firmware_cb+0x272/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1273
 request_firmware_work_func+0x13a/0x240 drivers/base/firmware_loader/main.c:1163
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 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>
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
usb 4-1: new high-speed USB device number 18 using dummy_hcd
usb 4-1: config index 0 descriptor too short (expected 23569, got 27)
usb 4-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 4-1: New USB device found, idVendor=03eb, idProduct=0002, bcdDevice=ba.c0
usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 4-1: config 0 descriptor??
rc_core: IR keymap rc-hauppauge not found
Registered IR keymap rc-empty
rc rc0: IgorPlug-USB IR Receiver as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.0/rc/rc0
input: IgorPlug-USB IR Receiver as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.0/rc/rc0/input148
igorplugusb 4-1:0.0: receive overflow invalid: 132
usb 2-1: USB disconnect, device number 15
powermate: config urb returned -71
powermate: usb_submit_urb(config) failed
usb 1-1: new high-speed USB device number 13 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 23
usb 1-1: New USB device found, idVendor=047f, idProduct=ffff, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??