svn commit: r365813 - head/sys/kern

[Konstantin Belousov]

Author: kib
Date: Wed Sep 16 21:40:32 2020
New Revision: 365813
URL: https://svnweb.freebsd.org/changeset/base/365813

Log:
  Assert that P_TREE_GRPEXITED is set only once.
  
  Tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week
  Differential revision:	https://reviews.freebsd.org/D26416

Modified:
  head/sys/kern/kern_proc.c

Modified: head/sys/kern/kern_proc.c
==============================================================================
--- head/sys/kern/kern_proc.c	Wed Sep 16 21:38:24 2020	(r365812)
+++ head/sys/kern/kern_proc.c	Wed Sep 16 21:40:32 2020	(r365813)
@@ -851,6 +851,7 @@ fixjobc_kill(struct proc *p)
 	 * It is marked by the flag because p is only physically
 	 * removed from its process group on wait(2).
 	 */
+	MPASS((p->p_treeflag & P_TREE_GRPEXITED) == 0);
 	p->p_treeflag |= P_TREE_GRPEXITED;
 
 	/*