patch 'eal: fix devargs layers parsing out of bounds' has been queued to stable release 24.11.2

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/17/25. 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/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/5550f484d4bea1e6ab69e6c82be991c5ee64f4d7

Thanks.

Kevin

---
>From 5550f484d4bea1e6ab69e6c82be991c5ee64f4d7 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

[ 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 a64805b268..dd857fc839 100644
--- a/lib/eal/common/eal_common_devargs.c
+++ b/lib/eal/common/eal_common_devargs.c
@@ -89,5 +89,5 @@ rte_devargs_layers_parse(struct rte_devargs *devargs,
 
 	while (s != NULL) {
-		if (nblayer > RTE_DIM(layers)) {
+		if (nblayer >= RTE_DIM(layers)) {
 			ret = -E2BIG;
 			goto get_out;
-- 
2.48.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-02-12 17:29:45.822921830 +0000
+++ 0107-eal-fix-devargs-layers-parsing-out-of-bounds.patch	2025-02-12 17:29:34.618947529 +0000
@@ -1 +1 @@
-From 42f91490ebc97a816ea11ce9c995f455c169a77a Mon Sep 17 00:00:00 2001
+From 5550f484d4bea1e6ab69e6c82be991c5ee64f4d7 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 42f91490ebc97a816ea11ce9c995f455c169a77a ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org