linux-kernel - [PATCH 4.19 045/105] crypto: ccree

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Date:   Mon, 20 May 2019 14:13:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Gilad Ben-Yossef <gilad@...yossef.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.19 045/105] crypto: ccree - fix mem leak on error path

From: Gilad Ben-Yossef <gilad@...yossef.com>

commit d574b707c873d6ef1a2a155f8cfcfecd821e9a2e upstream.

Fix a memory leak on the error path of IV generation code.

Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
Cc: stable@...r.kernel.org # v4.19+
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/crypto/ccree/cc_ivgen.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/drivers/crypto/ccree/cc_ivgen.c
+++ b/drivers/crypto/ccree/cc_ivgen.c
@@ -154,9 +154,6 @@ void cc_ivgen_fini(struct cc_drvdata *dr
 	}
 
 	ivgen_ctx->pool = NULL_SRAM_ADDR;
-
-	/* release "this" context */
-	kfree(ivgen_ctx);
 }
 
 /*!
@@ -174,10 +171,12 @@ int cc_ivgen_init(struct cc_drvdata *drv
 	int rc;
 
 	/* Allocate "this" context */
-	ivgen_ctx = kzalloc(sizeof(*ivgen_ctx), GFP_KERNEL);
+	ivgen_ctx = devm_kzalloc(device, sizeof(*ivgen_ctx), GFP_KERNEL);
 	if (!ivgen_ctx)
 		return -ENOMEM;
 
+	drvdata->ivgen_handle = ivgen_ctx;
+
 	/* Allocate pool's header for initial enc. key/IV */
 	ivgen_ctx->pool_meta = dma_alloc_coherent(device, CC_IVPOOL_META_SIZE,
 						  &ivgen_ctx->pool_meta_dma,
@@ -196,8 +195,6 @@ int cc_ivgen_init(struct cc_drvdata *drv
 		goto out;
 	}
 
-	drvdata->ivgen_handle = ivgen_ctx;
-
 	return cc_init_iv_sram(drvdata);
 
 out: