rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 1-....
 } 2653 jiffies s: 55553 root: 0x0/.
rcu: blocking rcu_node structures (internal RCU debug):
usb 1-1: USB disconnect, device number 73
usb 1-1: new high-speed USB device number 74 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input2357
rc_core: IR keymap rc-imon-pad not found
Registered IR keymap rc-empty
imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support
imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol
rc rc3: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc3
input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc3/input2359
imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:74> initialized
usb 1-1: USB disconnect, device number 74
usb 1-1: new high-speed USB device number 75 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7
usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input2371
rc_core: IR keymap rc-imon-pad not found
Registered IR keymap rc-empty
imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support
imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol
rc rc2: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc2
input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc2/input2372
imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:75> initialized