crypto: ccree - fix backlog memory leak

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@benyossef.com>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/crypto/ccree/cc_request_mgr.c b/drivers/crypto/ccree/cc_request_mgr.c
index 83a8aaa..36a79c1 100644 (file)
--- a/drivers/crypto/ccree/cc_request_mgr.c
+++ b/drivers/crypto/ccree/cc_request_mgr.c
@@ -403,6 +403,7 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
                spin_lock(&mgr->bl_lock);
                list_del(&bli->list);
                --mgr->bl_len;
+               kfree(bli);
        }
 
        spin_unlock(&mgr->bl_lock);