plug in pl2303 device
screen /dev/ttyUSB0
unplug


usb 1-1: new full speed USB device using uhci_hcd and address 5
usb 1-1: new device found, idVendor=067b, idProduct=2303
usb 1-1: new device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: configuration #1 chosen from 1 choice
pl2303 1-1:1.0: pl2303 converter detected
usb 1-1: pl2303 converter now attached to ttyUSB0
usb 1-1: USB disconnect, address 5
pl2303 1-1:1.0: device disconnected
pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
Slab corruption: start=c13e0934, len=1024
Redzone: 0x5a2cf071/0x5a2cf071.
Last user: [<c020a41e>](device_release+0x14/0x41)
010: 6b 6b 6b 6b 6b 6b 6b 6b 6c 6b 6b 6b 6b 6b 6b 6b
Prev obj: start=c13e0528, len=1024
Redzone: 0x170fc2a5/0x170fc2a5.
Last user: [<c0134504>](audit_alloc+0x5e/0xba)
000: 01 00 00 00 02 00 00 00 00 00 00 00 bb 3c 0c 44
010: 48 d9 e1 24 ff ff ff ff 8e 00 00 00 04 00 00 00
Next obj: start=c13e0d40, len=1024
Redzone: 0x170fc2a5/0x170fc2a5.
Last user: [<c0134504>](audit_alloc+0x5e/0xba)
000: 01 00 00 00 02 00 00 00 00 00 00 00 0e 3d 0c 44
010: 3a 36 95 2c ff ff ff ff 66 00 00 00 0b 00 00 00