From 788c106ea129880c07efb8d64f27365742e37bf4 Mon Sep 17 00:00:00 2001
From: Jesse Natalie <jenatali@microsoft.com>
Date: Tue, 5 Mar 2024 13:09:48 -0800
Subject: [PATCH] wgl: Initialize DEVMODE struct

Otherwise the dmDriverExtra field might be uninitialized and have a nonzero
value, which can cause the API implementation to smash the stack when copying
to the output struct.

Cc: mesa-stable
Reviewed-by: Joshua Ashton <joshua@froggi.es>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27998>
---
 src/gallium/frontends/wgl/stw_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/frontends/wgl/stw_device.c b/src/gallium/frontends/wgl/stw_device.c
index 655ae68be48..5261028d73d 100644
--- a/src/gallium/frontends/wgl/stw_device.c
+++ b/src/gallium/frontends/wgl/stw_device.c
@@ -74,7 +74,7 @@ static int
 get_refresh_rate(void)
 {
 #ifndef _GAMING_XBOX
-   DEVMODE devModes;
+   DEVMODE devModes = { .dmSize = sizeof(DEVMODE) };
 
    if (EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &devModes)) {
       /* clamp the value, just in case we get garbage */