patch 'net/e1000/base: fix crash on init with GCC 13' has been queued to stable release 24.11.4

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/26/25. 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/de5d2c67002923b31b644b801100be07a6444380

Thanks.

Kevin

---
>From de5d2c67002923b31b644b801100be07a6444380 Mon Sep 17 00:00:00 2001
From: Ciara Loftus <ciara.loftus at intel.com>
Date: Fri, 10 Oct 2025 12:58:48 +0000
Subject: [PATCH] net/e1000/base: fix crash on init with GCC 13

[ upstream commit 4d0b1e252a58f9cee89aa08d6e9742fa4a797e91 ]

The e1000 PMD crashes during initialisation in a Ubuntu 24.04 VM when
compiled with gcc-13 with -O3 optimisations. This patch introduces a
compiler barrier after the register read that was causing the issue.

Bugzilla ID: 1691
Fixes: af75078fece3 ("first public release")

Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
Tested-by: Thierry Herbelot <thierry.herbelot at 6wind.com>
---
 drivers/net/e1000/base/e1000_mac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/e1000/base/e1000_mac.c b/drivers/net/e1000/base/e1000_mac.c
index 5bb77d9e09..1ab5db98f2 100644
--- a/drivers/net/e1000/base/e1000_mac.c
+++ b/drivers/net/e1000/base/e1000_mac.c
@@ -1827,4 +1827,5 @@ s32 e1000_id_led_init_generic(struct e1000_hw *hw)
 
 	mac->ledctl_default = E1000_READ_REG(hw, E1000_LEDCTL);
+	rte_compiler_barrier();
 	mac->ledctl_mode1 = mac->ledctl_default;
 	mac->ledctl_mode2 = mac->ledctl_default;
-- 
2.51.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-11-21 11:05:10.897541606 +0000
+++ 0042-net-e1000-base-fix-crash-on-init-with-GCC-13.patch	2025-11-21 11:05:09.442201080 +0000
@@ -1 +1 @@
-From 4d0b1e252a58f9cee89aa08d6e9742fa4a797e91 Mon Sep 17 00:00:00 2001
+From de5d2c67002923b31b644b801100be07a6444380 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 4d0b1e252a58f9cee89aa08d6e9742fa4a797e91 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -17 +18 @@
- drivers/net/intel/e1000/base/e1000_mac.c | 1 +
+ drivers/net/e1000/base/e1000_mac.c | 1 +
@@ -20,5 +21,5 @@
-diff --git a/drivers/net/intel/e1000/base/e1000_mac.c b/drivers/net/intel/e1000/base/e1000_mac.c
-index 2fa97d12a9..41aae86ffe 100644
---- a/drivers/net/intel/e1000/base/e1000_mac.c
-+++ b/drivers/net/intel/e1000/base/e1000_mac.c
-@@ -1843,4 +1843,5 @@ s32 e1000_id_led_init_generic(struct e1000_hw *hw)
+diff --git a/drivers/net/e1000/base/e1000_mac.c b/drivers/net/e1000/base/e1000_mac.c
+index 5bb77d9e09..1ab5db98f2 100644
+--- a/drivers/net/e1000/base/e1000_mac.c
++++ b/drivers/net/e1000/base/e1000_mac.c
+@@ -1827,4 +1827,5 @@ s32 e1000_id_led_init_generic(struct e1000_hw *hw)