From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Wed, 18 Feb 2015 03:36:44 +0000 (+1000)
Subject: udev: fix a race condition if a device disappears before we get a handle
X-Git-Tag: 0.11.0~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=413c29fef72c7ac5f222af71469af2acfada43f9;p=platform%2Fupstream%2Flibinput.git

udev: fix a race condition if a device disappears before we get a handle

If the device disappears too quickly, the device is NULL, the sysname is NULL
and that causes a segfault in strcmp.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
---

diff --git a/src/udev-seat.c b/src/udev-seat.c
index 3d057336..6615f208 100644
--- a/src/udev-seat.c
+++ b/src/udev-seat.c
@@ -158,6 +158,8 @@ udev_input_add_devices(struct udev_input *input, struct udev *udev)
 	udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
 		path = udev_list_entry_get_name(entry);
 		device = udev_device_new_from_syspath(udev, path);
+		if (!device)
+			continue;
 
 		sysname = udev_device_get_sysname(device);
 		if (strncmp("event", sysname, 5) != 0) {