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authorDavid S. Miller <davem@davemloft.net>2009-04-16 17:35:26 -0700
committerDavid S. Miller <davem@davemloft.net>2009-04-16 17:35:26 -0700
commita54bfa40fd16aeb90bc556189221576f746f8567 (patch)
tree176bb7a99ffab5f42f0dd4e9671f335be3f3efa0 /security/keys/request_key.c
parentfe957c40ec5e2763b9977c565beab3bde3aaf85b (diff)
parent134ffb4cad92a6aa534e55a9be145bca780a32c1 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'security/keys/request_key.c')
-rw-r--r--security/keys/request_key.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index 22a31582bfa..03fe63ed55b 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -311,7 +311,8 @@ static int construct_alloc_key(struct key_type *type,
set_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags);
- down_write(&dest_keyring->sem);
+ if (dest_keyring)
+ down_write(&dest_keyring->sem);
/* attach the key to the destination keyring under lock, but we do need
* to do another check just in case someone beat us to it whilst we
@@ -322,10 +323,12 @@ static int construct_alloc_key(struct key_type *type,
if (!IS_ERR(key_ref))
goto key_already_present;
- __key_link(dest_keyring, key);
+ if (dest_keyring)
+ __key_link(dest_keyring, key);
mutex_unlock(&key_construction_mutex);
- up_write(&dest_keyring->sem);
+ if (dest_keyring)
+ up_write(&dest_keyring->sem);
mutex_unlock(&user->cons_lock);
*_key = key;
kleave(" = 0 [%d]", key_serial(key));