From: Oleg Nesterov <oleg@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>,
Roland McGrath <roland@redhat.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] ptrace: mm_need_new_owner: use ->real_parent to search in the siblings
Date: Thu, 23 Apr 2009 23:19:20 +0200 [thread overview]
Message-ID: <20090423211920.GA22377@redhat.com> (raw)
"Search in the siblings" should use ->real_parent, not ->parent. If the
task is traced then ->parent == tracer, while the task's parent is always
->real_parent.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
--- PTRACE/kernel/exit.c~ 2009-04-09 00:39:10.000000000 +0200
+++ PTRACE/kernel/exit.c 2009-04-23 23:08:37.000000000 +0200
@@ -590,7 +590,7 @@ retry:
/*
* Search in the siblings
*/
- list_for_each_entry(c, &p->parent->children, sibling) {
+ list_for_each_entry(c, &p->real_parent->children, sibling) {
if (c->mm == mm)
goto assign_new_owner;
}
next reply other threads:[~2009-04-23 21:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-23 21:19 Oleg Nesterov [this message]
2009-04-23 23:25 ` [PATCH] ptrace: mm_need_new_owner: use ->real_parent to search in the siblings Roland McGrath
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