cred: Refcount the user_ns pointed to by the cred.

struct user_struct will shortly loose it's user_ns reference
so make the cred user_ns reference a proper reference complete
with reference counting.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 70febff06da9..447fb7618ff3 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -858,7 +858,7 @@ void key_replace_session_keyring(void)
         new-> sgid      = old-> sgid;
         new->fsgid      = old->fsgid;
         new->user       = get_uid(old->user);
-        new->user_ns    = new->user_ns;
+        new->user_ns    = get_user_ns(new->user_ns);
         new->group_info = get_group_info(old->group_info);
 
         new->securebits = old->securebits;