FAILED: patch "[PATCH] drm/msm/gem: prevent integer overflow in" failed to apply to 5.4-stable tree

The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y
git checkout FETCH_HEAD
git cherry-pick -x 3a47f4b439beb98e955d501c609dfd12b7836d61
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2025021816-flail-manger-7c9a@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 3a47f4b439beb98e955d501c609dfd12b7836d61 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <[email protected]>
Date: Fri, 15 Nov 2024 17:50:08 +0300
Subject: [PATCH] drm/msm/gem: prevent integer overflow in
msm_ioctl_gem_submit()

The "submit->cmd[i].size" and "submit->cmd[i].offset" variables are u32 values that come from the user via the submit_lookup_cmds() function. This addition could lead to an integer wrapping bug so use size_add() to prevent that.

Patchwork: https://patchwork.freedesktop.org/patch/624696/

index fba78193127d..f775638d239a 100644
@@ -787,8 +787,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 			goto out;
 
 		if (!submit->cmd[i].size ||
-			((submit->cmd[i].size + submit->cmd[i].offset) >
-				obj->size / 4)) {
+		    (size_add(submit->cmd[i].size, submit->cmd[i].offset) > obj->size / 4)) {
 			SUBMIT_ERROR(submit, "invalid cmdstream size: %u\n", submit->cmd[i].size * 4);
 			ret = -EINVAL;
 			goto out;