From: Yang Li <yang.lee@linux.alibaba.com>
To: clabbe.montjoie@gmail.com
Cc: herbert@gondor.apana.org.au, davem@davemloft.net,
mripard@kernel.org, wens@csie.org, jernej.skrabec@siol.net,
linux-crypto@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Yang Li <yang.lee@linux.alibaba.com>
Subject: [PATCH v2] crypto: sun8i-ce: use kfree_sensitive() instead of
Date: Tue, 2 Mar 2021 17:09:05 +0800 [thread overview]
Message-ID: <1614676145-93512-1-git-send-email-yang.lee@linux.alibaba.com> (raw)
Use kfree_sensitive() instead of using kfree() to make the intention
of the API more explicit.
fixed the following coccicheck:
./drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c:30:16-17: WARNING
opportunity for kfree_sensitive/kvfree_sensitive (memset at line 29)
./drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c:42:16-17: WARNING
opportunity for kfree_sensitive/kvfree_sensitive (memset at line 41)
./drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c:161:8-9: WARNING
opportunity for kfree_sensitive/kvfree_sensitive (memset at line 109)
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
--
Changes in v2
-Change the appropriate title
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
index cfde9ee..8259d52 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
@@ -27,7 +27,7 @@ void sun8i_ce_prng_exit(struct crypto_tfm *tfm)
struct sun8i_ce_rng_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
memzero_explicit(ctx->seed, ctx->slen);
- kfree(ctx->seed);
+ kfree_sensitive(ctx->seed);
ctx->seed = NULL;
ctx->slen = 0;
}
@@ -39,7 +39,7 @@ int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed,
if (ctx->seed && ctx->slen != slen) {
memzero_explicit(ctx->seed, ctx->slen);
- kfree(ctx->seed);
+ kfree_sensitive(ctx->seed);
ctx->slen = 0;
ctx->seed = NULL;
}
@@ -158,7 +158,7 @@ int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src,
}
memzero_explicit(d, todo);
err_iv:
- kfree(d);
+ kfree_sensitive(d);
err_mem:
return err;
}
--
1.8.3.1
next reply other threads:[~2021-03-02 9:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 9:09 Yang Li [this message]
2021-03-02 9:39 ` [PATCH v2] crypto: sun8i-ce: use kfree_sensitive() instead of Herbert Xu
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