Package: usbutils
Version: 1:007-2
Severity: normal
Tags: patch
Hi,
I got the following error running 'lsusb -t':
# lsusb -t
Segmentation fault
It seems to happen because my directory /sys/bus/usb/devices/ is empty.
I've checked the code and found that as the directory is empty,
usbbuslist isn't
populated (still NULL). In the function sort_busses, usbbuslist is used
as it
isn't NULL, but it's the case here, so it ends with a segmentation fault.
To prevent this error I've added a quick check in the code about
usbbuslist at
the beginning of the function sort_busses. Patch in attachment.
Hope it helps.
--- a/lsusb-t.c 2013-06-06 19:13:12.000000000 -0400
+++ b/lsusb-t.c 2014-03-27 07:39:56.075336155 -0400
@@ -605,6 +605,7 @@
/* need to reverse sort bus numbers */
struct usbbusnode *t, *p, **pp;
int swapped;
+ if (!usbbuslist) return;
do {
p = usbbuslist;
pp = &usbbuslist;
