ACPICA: Dispatcher: add status checks (6bfe5344) · Commits · 戴 / test

ACPICA commit 3244c1eeba9f9fb9ccedb875f7923a3d85e0c6aa The status chekcs are used to to avoid NULL pointer dereference on field objects Link: https://github.com/acpica/acpica/commit/3244c1ee Reported-by:

Kurt Kennett <kurt_kennett@hotmail.com> Signed-off-by:

Erik Kaneda <erik.kaneda@intel.com> Signed-off-by:

Bob Moore <robert.moore@intel.com> Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/dsfield.c

+12 −5

Original line number	Diff line number	Diff line
		@@ -517,13 +517,20 @@ acpi_ds_create_field(union acpi_parse_object *op,
		info.region_node = region_node;

		status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
		if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
		}

		if (info.region_node->object->region.space_id ==
		ACPI_ADR_SPACE_PLATFORM_COMM
		&& !(region_node->object->field.internal_pcc_buffer =
		ACPI_ADR_SPACE_PLATFORM_COMM) {
		region_node->object->field.internal_pcc_buffer =
		ACPI_ALLOCATE_ZEROED(info.region_node->object->region.
		length))) {
		length);
		if (!region_node->object->field.internal_pcc_buffer) {
		return_ACPI_STATUS(AE_NO_MEMORY);
		}
		}

		return_ACPI_STATUS(status);
		}

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