linux-kernel - [PATCH 4.15 051/128] crypto: cavium

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Message-Id: <20180316152339.388038370@linuxfoundation.org>
Date:   Fri, 16 Mar 2018 16:23:12 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.15 051/128] crypto: cavium - fix memory leak on info

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Colin Ian King <colin.king@...onical.com>


[ Upstream commit 87aae50af730a28dc1d8846d86dca5e9aa724a9f ]

The object info is being leaked on an error return path, fix this
by setting ret to -ENOMEM and exiting via the request_cleanup path
that will free info.

Detected by CoverityScan, CID#1408439 ("Resource Leak")

Fixes: c694b233295b ("crypto: cavium - Add the Virtual Function driver for CPT")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/crypto/cavium/cpt/cptvf_reqmanager.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/crypto/cavium/cpt/cptvf_reqmanager.c
+++ b/drivers/crypto/cavium/cpt/cptvf_reqmanager.c
@@ -459,7 +459,8 @@ int process_request(struct cpt_vf *cptvf
 	info->completion_addr = kzalloc(sizeof(union cpt_res_s), GFP_KERNEL);
 	if (unlikely(!info->completion_addr)) {
 		dev_err(&pdev->dev, "Unable to allocate memory for completion_addr\n");
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto request_cleanup;
 	}
 
 	result = (union cpt_res_s *)info->completion_addr;