From: Zhao Hongjiang <zhaohongjiang37-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Eric W. Biederman" <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: PATCH userns: release the reference of user_ns when destroying a pid_ns
Date: Fri, 02 Nov 2012 20:36:14 +0800 [thread overview]
Message-ID: <5093BE3E.6020505@gmail.com> (raw)
From: Zhao Hongjiang <zhaohongjiang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
We should release the reference of user_ns which belong to the pid_ns when the
pid_ns's reference is down to zero, because when we create a new pid_ns we get the
reference of the user_ns.
Signed-off-by: Zhao Hongjiang <zhaohongjiang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
---
kernel/pid_namespace.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 2d6010a..f303462 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -127,6 +127,7 @@ static void destroy_pid_namespace(struct pid_namespace *ns)
{
int i;
+ put_user_ns(ns->user_ns);
proc_free_inum(ns->proc_inum);
for (i = 0; i < PIDMAP_ENTRIES; i++)
kfree(ns->pidmap[i].page);
-- 1.7.1
reply other threads:[~2012-11-02 12:36 UTC|newest]
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