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ACPICA: Dispatcher: add status checks 

[ Upstream commit 6bfe5344b2 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Erik Kaneda 2020-05-04 17:46:52 -07:00 committed by Greg Kroah-Hartman
parent c916af516d
commit fec6f8c0b2
1 changed files with 13 additions and 6 deletions
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19
drivers/acpi/acpica/dsfield.c
View File

@ -518,13 +518,20 @@ 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 (info.region_node->object->region.space_id ==
ACPI_ADR_SPACE_PLATFORM_COMM
&& !(region_node->object->field.internal_pcc_buffer =
ACPI_ALLOCATE_ZEROED(info.region_node->object->region.
length))) {
return_ACPI_STATUS(AE_NO_MEMORY);
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_ALLOCATE_ZEROED(info.region_node->object->region.
length);
if (!region_node->object->field.internal_pcc_buffer) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
return_ACPI_STATUS(status);
}