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cogl/pipeline: Don't try to access to free'd pointer data

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When free'ing a pipeline we destroy the BigState first and then the fragment and
vertex snippets lists using the big state pointer which is now invalid.
This causes a crash  when G_SLICE=always-malloc is set and using MALLOC_CHECK_.

So, invert the operations by free'ing the snippet lists first, and the big state
afterwards.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/581


(cherry picked from commit 7e0d185120)
This commit is contained in:
Marco Trevisan (Treviño) 2019-05-17 19:35:46 +00:00 committed by Marco Trevisan
parent ccd5e9fa08
commit 49dcf50727
1 changed files with 3 additions and 3 deletions
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6
cogl/cogl/cogl-pipeline.c
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@ -492,9 +492,6 @@ _cogl_pipeline_free (CoglPipeline *pipeline)
_cogl_bitmask_destroy (&uniforms_state->changed_mask);
}
if (pipeline->differences & COGL_PIPELINE_STATE_NEEDS_BIG_STATE)
g_slice_free (CoglPipelineBigState, pipeline->big_state);
if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
{
g_list_foreach (pipeline->layer_differences,
@ -508,6 +505,9 @@ _cogl_pipeline_free (CoglPipeline *pipeline)
if (pipeline->differences & COGL_PIPELINE_STATE_FRAGMENT_SNIPPETS)
_cogl_pipeline_snippet_list_free (&pipeline->big_state->fragment_snippets);
if (pipeline->differences & COGL_PIPELINE_STATE_NEEDS_BIG_STATE)
g_slice_free (CoglPipelineBigState, pipeline->big_state);
g_list_free (pipeline->deprecated_get_layers_list);
recursively_free_layer_caches (pipeline);