Duplicated Android device id?!

gistfile1.txt

#!/bin/bash

usbreset_serials() {
	echo Resetting.. May cause devices to move - files to ioctl/vanish.
	xargs -t |
	sed 's/\/serial/\/uevent/g' |
	xargs -tr grep -h DEVNAME= |
	sed 's/DEVNAME=/\/dev\//' |
	xargs -trn1 sudo $(dirname $0)/usbreset
}

ANDROIDS=$(grep -li android /sys/bus/usb/devices/*/product | sed -e 's/product$//')
echo Found $(echo -$ANDROIDS | wc -w) /sys/bus/usb/devices matching android.

# Check vs duplicate serial numbers !?
for i in $ANDROIDS ; do
	if [ -s $i/serial ] ; then
		SERIAL=$(cat $i/serial)
		MATCHES=$(grep -l $SERIAL /sys/bus/usb/devices/*/serial)
		if [ $(echo $MATCHES | wc -w) -ne 1 ] ; then
			echo Duplicates found for $SERIAL: $MATCHES
			echo $MATCHES | usbreset_serials
		fi
	else
		echo Empty serial file! $i/serial
	fi
done

fgrep -l "$(adb devices|awk '/offline/{print $1}'; echo DUMMY)" /sys/bus/usb/devices/*/serial |
	usbreset_serials

huh.txt

automation2.d4:~> grep -li android /sys/bus/usb/devices/*/product | sed -e 's/product/serial/' | xargs grep . | fgrep -F "$(adb devices | awk '/device$/{print $1}')"
/sys/bus/usb/devices/1-1.4.4.4.1/serial:ad0717021c004d53c0
/sys/bus/usb/devices/1-1.4.4.4.2/serial:ad07170216aa8a8b69
/sys/bus/usb/devices/1-1.4.4.4.3.1/serial:ad0717021c0042fa80    <---- duplicate!?
/sys/bus/usb/devices/1-1.4.4.4.3.2/serial:ad07170216aa9e9220
/sys/bus/usb/devices/1-1.4.4.4.3.3/serial:ad0717021cac466269
/sys/bus/usb/devices/1-1.4.4.4.6/serial:ad07170215ad6902ce
/sys/bus/usb/devices/1-1.4.4.4.7.2/serial:ad0517021c8b697b63
/sys/bus/usb/devices/1-1.4.4.4.7.4/serial:ad0717021c0042fa80   <---- duplicate!?
automation2.d4:~> adb devices | awk '/device$/{print $1}'|cat -n
     1	ad0717021cac466269
     2	ad0717021c0042fa80
     3	ad0517021c8b697b63
     4	ad0717021c004d53c0
     5	ad07170216aa9e9220
     6	ad07170216aa8a8b69
     7	ad07170215ad6902ce
automation2.d4:~> cat /sys/bus/usb/devices/1-1.4.4.4.3.1/product /sys/bus/usb/devices/1-1.4.4.4.7.4/product 
SAMSUNG_Android
SAMSUNG_Android
automation2.d4:~> uname -a
Linux automation2 4.14.75-0.2-default #1 SMP PREEMPT Mon Nov 13 14:53:06 UTC 2017 (c152297) x86_64 x86_64 x86_64 GNU/Linux

usbreset.c

/* usbreset -- send a USB port reset to a USB device */
/** cc usbreset.c -o usbreset **/

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>

#include <linux/usbdevice_fs.h>


int main(int argc, char **argv)
{
    const char *filename;
    int fd;
    int rc;

    if (argc != 2) {
        fprintf(stderr, "Usage: usbreset device-filename\n");
        return 1;
    }
    filename = argv[1];

    fd = open(filename, O_WRONLY);
    if (fd < 0) {
        perror("Error opening output file");
        return 1;
    }

    printf("Resetting USB device %s\n", filename);
    rc = ioctl(fd, USBDEVFS_RESET, 0);
    if (rc < 0) {
        perror("Error in ioctl");
        return 1;
    }
    printf("Reset successful\n");

    close(fd);
    return 0;
}