rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { } 5 jiffies s: 28669 root: 0x0/.
usb 4-1: USB disconnect, device number 67
cm109 4-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 4-1: new high-speed USB device number 68 using dummy_hcd
usb 4-1: Using ep0 maxpacket: 16
usb 4-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 4-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0
usb 4-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=b6.8f
usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 4-1: Product: syz
usb 4-1: Manufacturer: syz
usb 4-1: SerialNumber: syz
usb 4-1: config 0 descriptor??
cm109 4-1:0.0: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.0/input/input1160
usb 5-1: USB disconnect, device number 68
cm109 5-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 5-1: new high-speed USB device number 69 using dummy_hcd
usb 5-1: Using ep0 maxpacket: 16
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0
usb 5-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=b6.8f
usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 5-1: Product: syz
usb 5-1: Manufacturer: syz
usb 5-1: SerialNumber: syz
usb 5-1: config 0 descriptor??
cm109 5-1:0.0: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.4/usb5/5-1/5-1:0.0/input/input1165
usb 3-1: USB disconnect, device number 71
cm109 3-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 3-1: new high-speed USB device number 72 using dummy_hcd
usb 3-1: Using ep0 maxpacket: 16
usb 3-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 3-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0
usb 3-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=b6.8f
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: config 0 descriptor??
cm109 3-1:0.0: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.2/usb3/3-1/3-1:0.0/input/input1178
usb 6-1: USB disconnect, device number 73
cm109 6-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 6-1: new high-speed USB device number 74 using dummy_hcd
usb 6-1: Using ep0 maxpacket: 16