rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P6713 } 4 jiffies s: 28269 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):
usb 6-1: USB disconnect, device number 67
cm109 6-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 6-1: new high-speed USB device number 68 using dummy_hcd
usb 6-1: Using ep0 maxpacket: 16
usb 6-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 6-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0
usb 6-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=b6.8f
usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 6-1: Product: syz
usb 6-1: Manufacturer: syz
usb 6-1: SerialNumber: syz
usb 6-1: config 0 descriptor??
cm109 6-1:0.0: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.5/usb6/6-1/6-1:0.0/input/input1156
usb 1-1: USB disconnect, device number 67
cm109 1-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 1-1: new high-speed USB device number 68 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 16
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0
usb 1-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=b6.8f
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: syz
usb 1-1: SerialNumber: syz
usb 1-1: config 0 descriptor??
cm109 1-1:0.0: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input1160
usb 4-1: USB disconnect, device number 70
cm109 4-1:0.0: cm109_toggle_buzzer_sync: usb_control_msg() failed -19
usb 4-1: new high-speed USB device number 71 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/input1164
usb 4-1: USB disconnect, device number 71