Commit 3ded9104 authored Jan 12, 2016 by Rafael J. Wysocki

driver core: Avoid NULL pointer dereferences in device_is_bound()



If device_is_bound() is called on a device that's not been registered
yet, it will attepmt to dereference dev->p which is NULL, so avoid
that by checking dev->p in there against NULL.

Fixes: 6b9cb427 "device core: add device_is_bound()"
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 2d30bb0b

drivers/base/dd.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -234,7 +234,7 @@ late_initcall(deferred_probe_initcall);
		*/
		bool device_is_bound(struct device *dev)
		{
		return klist_node_attached(&dev->p->knode_driver);
		return dev->p && klist_node_attached(&dev->p->knode_driver);
		}

		static void driver_bound(struct device *dev)