linux-kernel - [PATCH] crypto: sun8i-ss: fix result memory leak on error path

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Date:   Tue,  2 Mar 2021 17:41:45 +0100
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     dan.carpenter@...cle.com, davem@...emloft.net,
        herbert@...dor.apana.org.au, jernej.skrabec@...l.net,
        mripard@...nel.org, wens@...e.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] crypto: sun8i-ss: fix result memory leak on error path

This patch fixes a memory leak on an error path.

Fixes: d9b45418a917 ("crypto: sun8i-ss - support hash algorithms")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
---
 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index 11cbcbc83a7b..0b9aa24a5edd 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
@@ -438,8 +438,8 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
 	kfree(pad);
 
 	memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
-	kfree(result);
 theend:
+	kfree(result);
 	crypto_finalize_hash_request(engine, breq, err);
 	return 0;
 }
-- 
2.26.2