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authorLin Ming <ming.m.lin@intel.com>2011-11-29 22:13:35 +0800
committerLen Brown <len.brown@intel.com>2012-01-17 03:31:43 -0500
commitda4d8b287abe783d30e968155614531a0937d090 (patch)
treed8303178ade4f2c6ed135055c124501ce75506ad /drivers/acpi/acpica/dsargs.c
parent9ad19ac456a5f097f7cbbfef820b95297d6a934f (diff)
ACPICA: Put back the call to acpi_os_validate_address
The call to acpi_os_validate_address in acpi_ds_get_region_arguments was removed by mistake in commit 9ad19ac(ACPICA: Split large dsopcode and dsload.c files). Put it back. Cc: stable@vger.kernel.org # 2.6.38+ Reported-and-bisected-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/dsargs.c')
-rw-r--r--drivers/acpi/acpica/dsargs.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
index 8c7b99728aa2..42163d8db50b 100644
--- a/drivers/acpi/acpica/dsargs.c
+++ b/drivers/acpi/acpica/dsargs.c
@@ -387,5 +387,29 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
status = acpi_ds_execute_arguments(node, node->parent,
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Validate the region address/length via the host OS */
+
+ status = acpi_os_validate_address(obj_desc->region.space_id,
+ obj_desc->region.address,
+ (acpi_size) obj_desc->region.length,
+ acpi_ut_get_node_name(node));
+
+ if (ACPI_FAILURE(status)) {
+ /*
+ * Invalid address/length. We will emit an error message and mark
+ * the region as invalid, so that it will cause an additional error if
+ * it is ever used. Then return AE_OK.
+ */
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During address validation of OpRegion [%4.4s]",
+ node->name.ascii));
+ obj_desc->common.flags |= AOPOBJ_INVALID;
+ status = AE_OK;
+ }
+
return_ACPI_STATUS(status);
}