[dpdk-stable] patch 'test/table: fix build with GCC 11' has been queued to stable release 20.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 20.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/14/21. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/steevenlee/dpdk

This queued commit can be viewed at:
https://github.com/steevenlee/dpdk/commit/64ac670fa007b2e0005cb16416324745ccc5a1ad

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 64ac670fa007b2e0005cb16416324745ccc5a1ad Mon Sep 17 00:00:00 2001
From: Ferruh Yigit <ferruh.yigit at intel.com>
Date: Mon, 17 May 2021 16:57:39 +0100
Subject: [PATCH] test/table: fix build with GCC 11
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: Luca Boccassi <bluca at debian.org>

[ upstream commit 33c12ac5ba5f09727c6de807e71403dd260a7bbc ]

Build error:
../app/test/test_table_tables.c: In function ‘test_table_stub’:
../app/test/test_table_tables.c:31:9:
	warning: ‘memset’ offset [0, 31] is out of the bounds [0, 0]
	[-Warray-bounds]
         memset((uint8_t *)mbuf + sizeof(struct rte_mbuf) + 32, 0, 32); \
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../app/test/test_table_tables.c:151:25:
	note: in expansion of macro ‘PREPARE_PACKET’
  151 |                         PREPARE_PACKET(mbufs[i], 0xadadadad);
      |                         ^~~~~~~~~~~~~~

'key' points to mbuf header + 32 bytes, and memset clears next 32 bytes
of 'key', so overall there needs to be 64 bytes after mbuf header.
Adding a mbuf size check before memset.

The original code has an assumption that mbuf data buffer follows mbuf
header, this patch accepts same assumption.

Bugzilla ID: 677
Fixes: 5205954791cb ("app/test: packet framework unit tests")

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
 app/test/test_table_tables.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/test/test_table_tables.c b/app/test/test_table_tables.c
index 1aa269f95d..4ff6ab16aa 100644
--- a/app/test/test_table_tables.c
+++ b/app/test/test_table_tables.c
@@ -28,7 +28,8 @@ table_test table_tests[] = {
 			APP_METADATA_OFFSET(0));			\
 	key = RTE_MBUF_METADATA_UINT8_PTR(mbuf,			\
 			APP_METADATA_OFFSET(32));			\
-	memset(key, 0, 32);						\
+	if (mbuf->priv_size + mbuf->buf_len >= 64)			\
+		memset(key, 0, 32);					\
 	k32 = (uint32_t *) key;						\
 	k32[0] = (value);						\
 	*signature = pipeline_test_hash(key, NULL, 0, 0);			\
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-06-12 06:54:00.513757200 +0800
+++ 0156-test-table-fix-build-with-GCC-11.patch	2021-06-12 06:53:56.620000000 +0800
@@ -1 +1 @@
-From 33c12ac5ba5f09727c6de807e71403dd260a7bbc Mon Sep 17 00:00:00 2001
+From 64ac670fa007b2e0005cb16416324745ccc5a1ad Mon Sep 17 00:00:00 2001
@@ -7,0 +8,3 @@
+Cc: Luca Boccassi <bluca at debian.org>
+
+[ upstream commit 33c12ac5ba5f09727c6de807e71403dd260a7bbc ]
@@ -30 +32,0 @@
-Cc: stable at dpdk.org