It's a little script daemon that monitors gpsdriver and kills it when has leaked enough memory to grow in size, which happens every 1.5-2 hours, but it won't interfere with gps usage.
KILL=$(busybox awk -v MMAX="$MMAX" '($1 == "VmSize:") {if ($2>MMAX) print 1 }' \ /proc/$PID/status) 2>/dev/null