Commit df9271d6 authored Apr 08, 2019 by Erik Schmauss Committed by Rafael J. Wysocki Apr 09, 2019

ACPICA: Namespace: add check to avoid null pointer dereference

ACPICA commit 7586a625f9c34c3169efd88470192bf63119e31a

Some ACPICA userspace tools call acpi_ut_subsystem_shutdown() during
cleanup and dereference a null pointer when cleaning up the
namespace.

Link: https://github.com/acpica/acpica/commit/7586a625


Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 985d5124

drivers/acpi/acpica/nsalloc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,10 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)

		ACPI_FUNCTION_NAME(ns_delete_node);

		if (!node) {
		return_VOID;
		}

		/* Detach an object if there is one */

		acpi_ns_detach_object(node);

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