File pad-size-of-system-memory-copy-for-1x1-pixmaps of Package xorg-x11-server.import4447

Overview Repositories Revisions Requests Users Attributes Meta

File pad-size-of-system-memory-copy-for-1x1-pixmaps of Package xorg-x11-server.import4447

From: Michel Dänzer <michel@daenzer.net>
Subject: Pad size of system memory copy for 1x1 pixmaps
References: bfo#32803 bnc#652523

Temporary description by: Jeff Mahoney <jeffm@suse.com>
 This patch fixes a crash that occured frequently with glibc malloc
 perturbing enabled and was a bit more random otherwise. The issue
 appears to be that the pExaPixmap for 1x1 pixmaps was allocating a single
 byte. The patch uses paddedWidth, which I expect is 4 bytes instead.

Acked-by: Jeff Mahoney <jeffm@suse.com>
---

exa/exa_mixed.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exa/exa_mixed.c b/exa/exa_mixed.c
index ef20eb5..606f1e1 100644
--- a/exa/exa_mixed.c
+++ b/exa/exa_mixed.c
@@ -98,7 +98,7 @@ exaCreatePixmap_mixed(ScreenPtr pScreen, int w, int h, int depth,
 	pExaPixmap->use_gpu_copy = FALSE;
 
 	if (w == 1 && h == 1) {
-	    pExaPixmap->sys_ptr = malloc((pPixmap->drawable.bitsPerPixel + 7) / 8);
+	    pExaPixmap->sys_ptr = malloc(paddedWidth);
 
 	    /* Set up damage tracking */
 	    pExaPixmap->pDamage = DamageCreate(exaDamageReport_mixed, NULL,

Places

File pad-size-of-system-memory-copy-for-1x1-pixmaps of Package xorg-x11-server.import4447

Places