D31561.id93831.diff
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D31561.id93831.diff
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	Index: sys/compat/linux/linux_misc.c
	===================================================================
	--- sys/compat/linux/linux_misc.c
	+++ sys/compat/linux/linux_misc.c
	@@ -1055,6 +1055,7 @@
	int
	linux_wait4(struct thread td, struct linux_wait4_args args)
	{
	+ struct proc *p;
	int options, id, idtype;

	if (args->options & ~(LINUX_WUNTRACED \| LINUX_WNOHANG \|
	@@ -1084,6 +1085,12 @@
	} else if (args->pid < 0) {
	idtype = P_PGID;
	id = (id_t)-args->pid;
	+ } else if (args->pid == 0) {
	+ idtype = P_PGID;
	+ p = td->td_proc;
	+ PROC_LOCK(p);
	+ id = p->p_pgrp->pg_id;
	+ PROC_UNLOCK(p);
	} else {
	idtype = P_PID;
	id = (id_t)args->pid;