From 1d11ba0ba3d3919bdee62a6513bc0c0d1e68aa66 Mon Sep 17 00:00:00 2001 From: Yann Droneaud Date: Fri, 2 Apr 2010 13:44:26 +0000 Subject: [PATCH] gallium: fix dri_destroy_option_cache() when optionCache.info is NULL With an Intel 855GM handled by intel_drv, there's a crash with Gallium3D enabled DRI driver for Intel i915 (--enable-gallium-intel). The Gallium3D driver doesn't support the 855GM as expected by intel_drv, it failed to open the screen and give an half initialized screen structure to dri_destroy_option_cache(): optionCache.info is NULL, so it's crashing while trying to free array content. This patch at least fix the crash in the function. Here's some logs of the fixed version: [ 16274.137] LoaderOpen(/opt/mesa/lib/xorg/modules/drivers/intel_drv.so) [ 16274.139] (II) Loading /opt/mesa/lib/xorg/modules/drivers/intel_drv.so [ 16274.183] (II) Module intel: vendor="X.Org Foundation" [ 16274.183] compiled for 1.8.0, module version = 2.11.0 [ 16274.183] Module class: X.Org Video Driver [ 16274.183] ABI class: X.Org Video Driver, version 7.0 [ 16274.183] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale [ 16274.382] (II) intel(0): Integrated Graphics Chipset: Intel(R) 855GME [ 16274.382] (--) intel(0): Chipset: "852GM/855GM" [ 16276.675] (II) intel(0): [DRI2] Setup complete [ 16276.675] (II) intel(0): [DRI2] DRI driver: i915 debug_get_option: GALLIUM_TRACE = (null) debug_get_bool_option: GALLIUM_RBUG = FALSE debug_get_bool_option: INTEL_DUMP_CMD = FALSE i915_create_screen: unknown pci id 0x3582, cannot create screen dri_init_screen_helper: failed to create pipe_screen [ 16276.794] (EE) AIGLX error: Calling driver entry point failed [ 16276.794] (EE) AIGLX: reverting to software rendering [ 16276.794] (II) AIGLX: Screen 0 is not DRI capable [ 16276.796] (II) AIGLX: Loaded and initialized /opt/mesa/lib/dri/swrast_dri.so [ 16276.796] (II) GLX: Initialized DRISWRAST GL provider for screen 0 Signed-off-by: Yann Droneaud Reviewed-by: Corbin Simpson --- src/gallium/state_trackers/dri/common/dri_screen.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/gallium/state_trackers/dri/common/dri_screen.c b/src/gallium/state_trackers/dri/common/dri_screen.c index 6fc7487..6e17614 100644 --- a/src/gallium/state_trackers/dri/common/dri_screen.c +++ b/src/gallium/state_trackers/dri/common/dri_screen.c @@ -288,12 +288,14 @@ dri_destroy_option_cache(struct dri_screen * screen) { int i; - for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) { - FREE(screen->optionCache.info[i].name); - FREE(screen->optionCache.info[i].ranges); + if (screen->optionCache.info) { + for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) { + FREE(screen->optionCache.info[i].name); + FREE(screen->optionCache.info[i].ranges); + } + FREE(screen->optionCache.info); } - FREE(screen->optionCache.info); FREE(screen->optionCache.values); } -- 2.7.4