patch 'eal: fix devargs layers parsing out of bounds' has been queued to stable release 23.11.4

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
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://git.dpdk.org/dpdk-stable/log/?h=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=248cf72eda718248d2f6dc7380e7b4d0cfcdbfa3

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 248cf72eda718248d2f6dc7380e7b4d0cfcdbfa3 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen at networkplumber.org>
Date: Wed, 5 Feb 2025 08:23:07 -0800
Subject: [PATCH] eal: fix devargs layers parsing out of bounds
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 42f91490ebc97a816ea11ce9c995f455c169a77a ]

The code for parsing layers in devargs could reference past
the end of layers[] array on stack.

Link: https://pvs-studio.com/en/blog/posts/cpp/1183/

Fixes: 9a1a9e4a2ddd ("devargs: support path value with global device syntax")

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 lib/eal/common/eal_common_devargs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/eal/common/eal_common_devargs.c b/lib/eal/common/eal_common_devargs.c
index fb5d0a293b..2f1515d7c9 100644
--- a/lib/eal/common/eal_common_devargs.c
+++ b/lib/eal/common/eal_common_devargs.c
@@ -88,7 +88,7 @@ rte_devargs_layers_parse(struct rte_devargs *devargs,
 	s = devargs->data;

 	while (s != NULL) {
-		if (nblayer > RTE_DIM(layers)) {
+		if (nblayer >= RTE_DIM(layers)) {
 			ret = -E2BIG;
 			goto get_out;
 		}
--
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-02-18 19:39:03.349516179 +0800
+++ 0076-eal-fix-devargs-layers-parsing-out-of-bounds.patch	2025-02-18 19:39:00.708244034 +0800
@@ -1 +1 @@
-From 42f91490ebc97a816ea11ce9c995f455c169a77a Mon Sep 17 00:00:00 2001
+From 248cf72eda718248d2f6dc7380e7b4d0cfcdbfa3 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 42f91490ebc97a816ea11ce9c995f455c169a77a ]
@@ -12 +14,0 @@
-Cc: stable at dpdk.org
@@ -20 +22 @@
-index a64805b268..dd857fc839 100644
+index fb5d0a293b..2f1515d7c9 100644