--- /sys/src/9/pc/main.c	Mon Dec  3 11:04:31 2018+++ ../frontmods/pc/main.c	Fri Dec  7 23:24:23 2018@@ -157,6 +157,8 @@ 	p->pgrp = newpgrp(); 	p->egrp = smalloc(sizeof(Egrp)); 	p->egrp->ref = 1;+	p->sgrp = smalloc(sizeof(Sgrp));+	p->sgrp->ref = 1; 	p->fgrp = dupfgrp(nil); 	p->rgrp = newrgrp(); 	p->procmode = 0640;