From: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
Date: Thu, 9 Jun 2016 08:19:47 +0000 (+0100)
Subject: mempool: fix local cache initialization
X-Git-Tag: spdx-start~6751
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=43b194b43344b262b00f6c8a24443b46ed82009b;p=dpdk.git

mempool: fix local cache initialization

The mempool local cache was not initialized properly leading to
undefined behavior in cases where the allocated memory was used
previously and left with data.

Fixes: 213af31e0960 ("mempool: reduce structure size if no cache needed")

Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
---

diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 22a564570d..af71edde01 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -787,7 +787,7 @@ rte_mempool_create_empty(const char *name, unsigned n, unsigned elt_size,
 
 	/* init the mempool structure */
 	mp = mz->addr;
-	memset(mp, 0, sizeof(*mp));
+	memset(mp, 0, MEMPOOL_HEADER_SIZE(mp, cache_size));
 	ret = snprintf(mp->name, sizeof(mp->name), "%s", name);
 	if (ret < 0 || ret >= (int)sizeof(mp->name)) {
 		rte_errno = ENAMETOOLONG;