KEYS: call_sbin_request_key() must write lock keyrings before modifying them

[pandora-kernel.git] / security / keys / request_key.c

diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index ea97c31..d8c1a6a 100644 (file)
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -94,7 +94,7 @@ static int call_sbin_request_key(struct key_construction *cons,
        }
 
        /* attach the auth key to the session keyring */
-       ret = __key_link(keyring, authkey);
+       ret = key_link(keyring, authkey);
        if (ret < 0)
                goto error_link;
 
@@ -339,8 +339,10 @@ static int construct_alloc_key(struct key_type *type,
 
 key_already_present:
        mutex_unlock(&key_construction_mutex);
-       if (dest_keyring)
+       if (dest_keyring) {
+               __key_link(dest_keyring, key_ref_to_ptr(key_ref));
                up_write(&dest_keyring->sem);
+       }
        mutex_unlock(&user->cons_lock);
        key_put(key);
        *_key = key = key_ref_to_ptr(key_ref);
@@ -431,6 +433,11 @@ struct key *request_key_and_link(struct key_type *type,
 
        if (!IS_ERR(key_ref)) {
                key = key_ref_to_ptr(key_ref);
+               if (dest_keyring) {
+                       construct_get_dest_keyring(&dest_keyring);
+                       key_link(dest_keyring, key);
+                       key_put(dest_keyring);
+               }
        } else if (PTR_ERR(key_ref) != -EAGAIN) {
                key = ERR_CAST(key_ref);
        } else  {