[PATCH 10/15] KEYS: checking the input id parameters before finding asymmetric key

[David Howells]

From: Lee, Chun-Yi <joeyli.ker...@gmail.com>

For finding asymmetric key, the input id_0 and id_1 parameters can
not be NULL at the same time. This patch adds the BUG_ON checking
for id_0 and id_1.

Cc: David Howells <dhowe...@redhat.com>
Cc: Herbert Xu <herb...@gondor.apana.org.au>
Cc: "David S. Miller" <da...@davemloft.net>
Signed-off-by: "Lee, Chun-Yi" <j...@suse.com>
Signed-off-by: David Howells <dhowe...@redhat.com>
---

 crypto/asymmetric_keys/asymmetric_type.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/crypto/asymmetric_keys/asymmetric_type.c 
b/crypto/asymmetric_keys/asymmetric_type.c
index a597f5c5a222..39aecad286fe 100644
--- a/crypto/asymmetric_keys/asymmetric_type.c
+++ b/crypto/asymmetric_keys/asymmetric_type.c
@@ -57,6 +57,8 @@ struct key *find_asymmetric_key(struct key *keyring,
        char *req, *p;
        int len;
 
+       BUG_ON(!id_0 && !id_1);
+
        if (id_0) {
                lookup = id_0->data;
                len = id_0->len;