ref: 4fd55abb8e6dc11b257699cbd095fa5ef60e1ece
parent: e2da074d284df467443612e7187855b7cf373097
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sat Dec 7 00:38:31 EST 2013
kernel: fix pexit() Waitmsg memory leak. when a process got forked with RFNOWAIT, its p->parent will still point to the parent process, but its p->parentpid == 0. this causes the "parent still alive" check in pexit to get confused as it only checked p->pid == up->parentpid. this condition is *TRUE* in the case of RFNOWAIT when the parent process is actually dead (p->pid == 0) so we attached the wait structure to the dead parent leaking the memory.