patch 'net/ice/base: fix size when allocating children arrays' has been queued to stable release 23.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/14/24. 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://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=8bc9ae6b59c2a6a3bb4783a9d3b604195831347f

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 8bc9ae6b59c2a6a3bb4783a9d3b604195831347f Mon Sep 17 00:00:00 2001
From: Jacob Keller <jacob.e.keller at intel.com>
Date: Wed, 26 Jun 2024 12:41:08 +0100
Subject: [PATCH] net/ice/base: fix size when allocating children arrays
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 3072e5e2da9870d8cb119f15482eae9d9fb51e98 ]

The ice_sched_add_root_node() and ice_sched_add_node() functions have
comments to suppress Coverity warnings about a suspicious sizeof used
when allocating the children array of an struct ice_sched_node.

The size is calculated using the size of the scheduler node, which
overallocates the array by a significant amount.

Fix the code to correctly calculate the size by using *root->children
and *node->children respectively.

This saves some memory and allows us to drop the Coverity suppression
comments.

Fixes: 93e84b1bfc92 ("net/ice/base: add basic Tx scheduler")

Signed-off-by: Jacob Keller <jacob.e.keller at intel.com>
Signed-off-by: Ian Stokes <ian.stokes at intel.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
 drivers/net/ice/base/ice_sched.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/base/ice_sched.c b/drivers/net/ice/base/ice_sched.c
index 75dd15c3f3..21cfe53a6d 100644
--- a/drivers/net/ice/base/ice_sched.c
+++ b/drivers/net/ice/base/ice_sched.c
@@ -28,9 +28,8 @@ ice_sched_add_root_node(struct ice_port_info *pi,
 	if (!root)
 		return ICE_ERR_NO_MEMORY;
 
-	/* coverity[suspicious_sizeof] */
 	root->children = (struct ice_sched_node **)
-		ice_calloc(hw, hw->max_children[0], sizeof(*root));
+		ice_calloc(hw, hw->max_children[0], sizeof(*root->children));
 	if (!root->children) {
 		ice_free(hw, root);
 		return ICE_ERR_NO_MEMORY;
@@ -186,9 +185,9 @@ ice_sched_add_node(struct ice_port_info *pi, u8 layer,
 	if (!node)
 		return ICE_ERR_NO_MEMORY;
 	if (hw->max_children[layer]) {
-		/* coverity[suspicious_sizeof] */
 		node->children = (struct ice_sched_node **)
-			ice_calloc(hw, hw->max_children[layer], sizeof(*node));
+			ice_calloc(hw, hw->max_children[layer],
+				   sizeof(*node->children));
 		if (!node->children) {
 			ice_free(hw, node);
 			return ICE_ERR_NO_MEMORY;
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-08-12 20:44:04.378657751 +0800
+++ 0055-net-ice-base-fix-size-when-allocating-children-array.patch	2024-08-12 20:44:02.085069292 +0800
@@ -1 +1 @@
-From 3072e5e2da9870d8cb119f15482eae9d9fb51e98 Mon Sep 17 00:00:00 2001
+From 8bc9ae6b59c2a6a3bb4783a9d3b604195831347f Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 3072e5e2da9870d8cb119f15482eae9d9fb51e98 ]
@@ -20 +22,0 @@
-Cc: stable at dpdk.org
@@ -30 +32 @@
-index c9d70fb043..74d57329da 100644
+index 75dd15c3f3..21cfe53a6d 100644