File Replace-malloc-with-calloc-to-initialize-the-bu... of Package xorg-x11-server

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File Replace-malloc-with-calloc-to-initialize-the-buffers.patch of Package xorg-x11-server (Revision fd6f38240d3b3ec3d5add2ae0eb52270)

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From a73c28f0bdafb1c5cb8129179188a99c0ca052e2 Mon Sep 17 00:00:00 2001
From: Justin Dou <Justin.Dou@intel.com>
Date: Thu, 10 Feb 2011 16:27:29 -0500
Subject: [PATCH] Replace malloc with calloc to initialize the buffers[] as NULL in do_get_buffers function
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The calling for allocate_or_reuse_buffer may fail due to some reason, e.g. out of memory.
If the buffers[] were not initialized to be NULL, the following err_out may try to access an illegal memory, which will cause X crash afterward.

Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Justin Dou <Justin.Dou@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
---
 hw/xfree86/dri2/dri2.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c
index 39996f9..9ca378f 100644
--- a/hw/xfree86/dri2/dri2.c
+++ b/hw/xfree86/dri2/dri2.c
@@ -403,7 +403,7 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
 	&& (pDraw->height == pPriv->height)
 	&& (pPriv->serialNumber == DRI2DrawableSerial(pDraw));
 
-    buffers = malloc((count + 1) * sizeof(buffers[0]));
+    buffers = calloc((count + 1), sizeof(buffers[0]));
 
     for (i = 0; i < count; i++) {
 	const unsigned attachment = *(attachments++);
-- 
1.7.4.1

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File Replace-malloc-with-calloc-to-initialize-the-buffers.patch of Package xorg-x11-server (Revision fd6f38240d3b3ec3d5add2ae0eb52270)

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