linux-kernel - [PATCH 5.4 102/309] crypto: ccree

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Message-Id: <20200210122416.041864509@linuxfoundation.org>
Date:   Mon, 10 Feb 2020 04:30:58 -0800
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 5.4 102/309] crypto: ccree - fix backlog memory leak

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

commit 4df2ef25b3b3618fd708ab484fe6239abd130fec upstream.

Fix brown paper bag bug of not releasing backlog list item buffer
when backlog was consumed causing a memory leak when backlog is
used.

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_request_mgr.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/crypto/ccree/cc_request_mgr.c
+++ b/drivers/crypto/ccree/cc_request_mgr.c
@@ -404,6 +404,7 @@ static void cc_proc_backlog(struct cc_dr
 		spin_lock(&mgr->bl_lock);
 		list_del(&bli->list);
 		--mgr->bl_len;
+		kfree(bli);
 	}
 
 	spin_unlock(&mgr->bl_lock);