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https://gitlab.freedesktop.org/xorg/xserver/-/commit/22d58188
https://bugs.gentoo.org/830482
From: =?UTF-8?q?B=C5=82a=C5=BCej=20Szczygie=C5=82?= <spaz16@wp.pl>
Date: Thu, 13 Jan 2022 00:47:27 +0100
Subject: [PATCH] present: Check for NULL to prevent crash
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1275
Signed-off-by: Błażej Szczygieł <spaz16@wp.pl>
Tested-by: Aaron Plattner <aplattner@nvidia.com>
--- a/present/present_scmd.c
+++ b/present/present_scmd.c
@@ -158,6 +158,9 @@ present_scmd_get_crtc(present_screen_priv_ptr screen_priv, WindowPtr window)
if (!screen_priv->info)
return NULL;
+ if (!screen_priv->info->get_crtc)
+ return NULL;
+
return (*screen_priv->info->get_crtc)(window);
}
@@ -196,6 +199,9 @@ present_flush(WindowPtr window)
if (!screen_priv->info)
return;
+ if (!screen_priv->info->flush)
+ return;
+
(*screen_priv->info->flush) (window);
}
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