From c3f2135cfce3d3ed9117b6784bb9f464d8de09d8 Mon Sep 17 00:00:00 2001 From: Oleksandr Tymoshenko Date: Fri, 23 Sep 2016 18:54:08 +0000 Subject: Handle NULL argument in evdev_free Add check for evdev argument of evdev_free being NULL. This is valid value and should not cause crash. In this case evdev_free does nothing Submitted by: Vladimir Kondratiev --- sys/dev/evdev/evdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sys/dev/evdev') diff --git a/sys/dev/evdev/evdev.c b/sys/dev/evdev/evdev.c index ee433bdd1e601..a2d2a92fd8513 100644 --- a/sys/dev/evdev/evdev.c +++ b/sys/dev/evdev/evdev.c @@ -92,7 +92,8 @@ void evdev_free(struct evdev_dev *evdev) { - if (evdev->ev_cdev != NULL && evdev->ev_cdev->si_drv1 != NULL) + if (evdev != NULL && evdev->ev_cdev != NULL && + evdev->ev_cdev->si_drv1 != NULL) evdev_unregister(evdev); free(evdev, M_EVDEV); -- cgit v1.3