Commit 173a5a4c authored May 31, 2013 by Hanjun Guo Committed by Rafael J. Wysocki Jun 01, 2013

ACPI / processor: Fix potential NULL pointer dereference in acpi_processor_add()



In acpi_processor_add(), get_cpu_device() may return NULL in some cases
which is then passed to acpi_bind_one() and that will case a NULL
pointer dereference to occur.

Add a check to prevent that from happening.

[rjw: Changelog]
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 242831eb

drivers/acpi/acpi_processor.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -393,6 +393,11 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device,
		per_cpu(processors, pr->id) = pr;

		dev = get_cpu_device(pr->id);
		if (!dev) {
		result = -ENODEV;
		goto err;
		}

		result = acpi_bind_one(dev, pr->handle);
		if (result)
		goto err;