Author: kib
Date: Tue Mar 13 22:00:46 2012
New Revision: 232947
URL: http://svn.freebsd.org/changeset/base/232947
Log:
Lock the process around manipulations with p_flag.
Reported and reviewed by: jh
MFC after: 3 days
Modified:
head/sys/kern/kern_exit.c
Modified: head/sys/kern/kern_exit.c
==============================================================================
--- head/sys/kern/kern_exit.c Tue Mar 13 21:25:25 2012 (r232946)
+++ head/sys/kern/kern_exit.c Tue Mar 13 22:00:46 2012 (r232947)
@@ -738,10 +738,12 @@ proc_reap(struct thread *td, struct proc
LIST_REMOVE(p, p_list); /* off zombproc */
sx_xunlock(&allproc_lock);
LIST_REMOVE(p, p_sibling);
+ PROC_LOCK(p);
if (p->p_flag & P_ORPHAN) {
LIST_REMOVE(p, p_orphan);
p->p_flag &= ~P_ORPHAN;
}
+ PROC_UNLOCK(p);
leavepgrp(p);
#ifdef PROCDESC
if (p->p_procdesc != NULL)
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