debian/patches/229_randr_first_check_pScrPriv_before_using_the_pointer.patch

   1 From 32603f57ca03b6390b109960f8bb5ea53ac95ecb Mon Sep 17 00:00:00 2001
   2 From: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
   3 Date: Thu, 21 Jun 2012 00:55:53 -0300
   4 Subject: [PATCH] randr: first check pScrPriv before using the pointer at
   5  RRFirstOutput
   6
   7 Fix a seg fault in case pScrPriv is NULL at ProcRRGetScreenInfo,
   8 which later calls RRFirstOutput.
   9
  10 Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
  11 Reviewed-by: Keith Packard <keithp@keithp.com>
  12 Signed-off-by: Keith Packard <keithp@keithp.com>
  13 ---
  14  randr/randr.c |    3 +++
  15  1 file changed, 3 insertions(+)
  16
  17 Index: xorg-server-1.11.4/randr/randr.c
  18 ===================================================================
  19 --- xorg-server-1.11.4.orig/randr/randr.c       2012-07-17 18:46:06.000000000 -0300
  20 +++ xorg-server-1.11.4/randr/randr.c    2012-07-17 18:48:35.169824448 -0300
  21 @@ -454,6 +454,9 @@
  22      rrScrPriv(pScreen);
  23      RROutputPtr                    output;
  24      int        i, j;
  25 +
  26 +    if (!pScrPriv)
  27 +        return NULL;
  28
  29      if (pScrPriv->primaryOutput && pScrPriv->primaryOutput->crtc)
  30         return pScrPriv->primaryOutput;