[S390] cio: fix potential overflow in chpid descriptor

[net-next-2.6.git] / drivers / s390 / cio / chsc.c

diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index ce7cb87479fe3b8aed786eeea182549da7352b35..407d0e9adfaf96a0d4362f8e56c986f0c17700fa 100644 (file)
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -713,7 +713,7 @@ int chsc_determine_base_channel_path_desc(struct chp_id chpid,
        ret = chsc_determine_channel_path_desc(chpid, 0, 0, 0, 0, chsc_resp);
        if (ret)
                goto out_free;
-       memcpy(desc, &chsc_resp->data, chsc_resp->length);
+       memcpy(desc, &chsc_resp->data, sizeof(*desc));
 out_free:
        kfree(chsc_resp);
        return ret;