From: Colin King <colin.king@canonical.com>
To: Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
linux-crypto@vger.kernel.org, linux-s390@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] s390/crypto: initialize ret to zero to avoid returning garbage value
Date: Mon, 5 Sep 2016 17:21:18 +0100 [thread overview]
Message-ID: <20160905162118.16510-1-colin.king@canonical.com> (raw)
From: Colin Ian King <colin.king@canonical.com>
static analysis with cppcheck detected that ret is not initialized
and hence garbage is potentially being returned in the case where
prng_data->ppnows.reseed_counter <= prng_reseed_limit.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
arch/s390/crypto/prng.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index 79e3a1f..a21fdf4 100644
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -412,7 +412,7 @@ static int prng_sha512_reseed(void)
static int prng_sha512_generate(u8 *buf, size_t nbytes)
{
- int ret;
+ int ret = 0;
/* reseed needed ? */
if (prng_data->ppnows.reseed_counter > prng_reseed_limit) {
--
2.9.3
next reply other threads:[~2016-09-05 16:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-05 16:21 Colin King [this message]
2016-09-06 7:10 ` [PATCH] s390/crypto: initialize ret to zero to avoid returning garbage value Martin Schwidefsky
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