[PATCH 1/2] crypto: asymmetric_keys: set error code on failure

From: David Howells
Date: Mon Dec 12 2016 - 11:16:59 EST

From: Pan Bian <bianpan2016@xxxxxxx>

In function public_key_verify_signature(), returns variable ret on
error paths. When the call to kmalloc() fails, the value of ret is 0,
and it is not set to an errno before returning. This patch fixes the

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188891

Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>

crypto/asymmetric_keys/public_key.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c
index fd76b5fc3b3a..d3a989e718f5 100644
--- a/crypto/asymmetric_keys/public_key.c
+++ b/crypto/asymmetric_keys/public_key.c
@@ -121,6 +121,7 @@ int public_key_verify_signature(const struct public_key *pkey,
if (ret)
goto error_free_req;

+ ret = -ENOMEM;
outlen = crypto_akcipher_maxsize(tfm);
output = kmalloc(outlen, GFP_KERNEL);
if (!output)