linux-kernel - [PATCH 2/3] crypto: Fix potential leak in test_aead_speed() if crypto_alloc

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Date:	Mon, 21 Apr 2014 20:46:40 +0200
From:	Christian Engelmayer <cengelma@....at>
To:	tim.c.chen@...ux.intel.com
Cc:	herbert@...dor.apana.org.au, davem@...emloft.net,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] crypto: Fix potential leak in test_aead_speed() if
 crypto_alloc_aead() fails

Fix a potential memory leak in the error handling of test_aead_speed(). In case
crypto_alloc_aead() fails, the function returns without going through the
centralized cleanup path. Reported by Coverity - CID 1163870.

Signed-off-by: Christian Engelmayer <cengelma@....at>
---
 crypto/tcrypt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 1856d7f..1849155 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -313,7 +313,7 @@ static void test_aead_speed(const char *algo, int enc, unsigned int sec,
 	if (IS_ERR(tfm)) {
 		pr_err("alg: aead: Failed to load transform for %s: %ld\n", algo,
 		       PTR_ERR(tfm));
-		return;
+		goto out_notfm;
 	}
 
 	req = aead_request_alloc(tfm, GFP_KERNEL);
@@ -391,6 +391,7 @@ static void test_aead_speed(const char *algo, int enc, unsigned int sec,
 
 out:
 	crypto_free_aead(tfm);
+out_notfm:
 	kfree(sg);
 out_nosg:
 	testmgr_free_buf(xoutbuf);
-- 
1.9.1

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