--- /sys/src/9/pc64/main.c	Wed Sep  4 02:49:09 2019+++ ../frontmods/pc64/main.c	Wed Sep  4 02:53:39 2019@@ -197,6 +197,8 @@ 	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;