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drm/i915/guc: Clear pointers on free

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Clear out some pointers when objects have been de-allocated. This
makes it much easier to track down use-after-free type issues.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201028145826.2949180-4-John.C.Harrison@Intel.com
This commit is contained in:
John Harrison 2020-10-28 07:58:26 -07:00 committed by Joonas Lahtinen
parent 164e57ca15
commit 0f41e31a7b
2 changed files with 2 additions and 0 deletions
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1
drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
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@ -220,6 +220,7 @@ int intel_guc_ads_create(struct intel_guc *guc)
void intel_guc_ads_destroy(struct intel_guc *guc)
{
i915_vma_unpin_and_release(&guc->ads_vma, I915_VMA_RELEASE_MAP);
guc->ads_blob = NULL;
}
static void guc_ads_private_data_reset(struct intel_guc *guc)

1
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
View File

@ -210,6 +210,7 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct)
GEM_BUG_ON(ct->enabled);
i915_vma_unpin_and_release(&ct->vma, I915_VMA_RELEASE_MAP);
memset(ct, 0, sizeof(*ct));
}
/**