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drm/amd/display: Fix memory corruption issue.

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temp_flip_context is always same as current_context,
and the current_context will be freed in
dc_commit_targets(), but  temp_flip_context will be used in
dc_update_surfaces_for_target().

Signed-off-by: JimQu <Jim.Qu@amd.com>
Reviewed-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
jimqu 2016-11-28 08:05:46 +08:00 • committed by Alex Deucher
parent 8e545104aa
commit ead964f24e
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -1096,8 +1096,12 @@ bool dc_commit_targets(
resource_validate_ctx_destruct(core_dc->current_context); resource_validate_ctx_destruct(core_dc->current_context);
dm_free(core_dc->current_context); if (core_dc->temp_flip_context != core_dc->current_context) {
dm_free(core_dc->temp_flip_context);
core_dc->temp_flip_context = core_dc->current_context;
}
core_dc->current_context = context; core_dc->current_context = context;
memset(core_dc->temp_flip_context, 0, sizeof(*core_dc->temp_flip_context));
return (result == DC_OK); return (result == DC_OK);