[PATCH 5.5 115/367] crypto: ccree - fix backlog memory leak

Greg Kroah-Hartman
2020-02-10T13:04:50Z

From: Gilad Ben-Yossef <gilad@benyossef.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@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>

---
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);