key: Fix resource leak

commit a84a921978b7d56e0e4b87ffaca6367429b4d8ff upstream.

On an error iov may still have been reallocated and need freeing

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 0b3f5d72af1cecbd06b33c2151ec570a4cfaa2ee..b70eaa27f8970b84566c0f3fe7feb608db662132 100644 (file)
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1067,12 +1067,12 @@ long keyctl_instantiate_key_iov(key_serial_t id,
        ret = rw_copy_check_uvector(WRITE, _payload_iov, ioc,
                                    ARRAY_SIZE(iovstack), iovstack, &iov, 1);
        if (ret < 0)
-               return ret;
+               goto err;
        if (ret == 0)
                goto no_payload_free;
 
        ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid);
-
+err:
        if (iov != iovstack)
                kfree(iov);
        return ret;