On Sat, 2017-05-06 at 07:22 +0200, markus@xxxxxxxxxxxxxxx wrote: > - ret = __elevator_change(q, name); > + strlcpy(elevator_name, skip_spaces(name), sizeof(elevator_name)); Hello Markus, Please include the version number of a patch in the e-mail subject line when posting a second or later version. Regarding the strlcpy() call, in the FreeBSD strlcpy() man page I found the following: "If the src and dst strings overlap, the behavior is undefined." Since the Linux kernel implementation of strlcpy() uses memcpy() and since the ANSI C standard does not allow that memcpy() input and output buffers overlap, please rework this code. See e.g. http://pubs.opengroup.org/onlinepubs/9699919799/functions/memcpy.html Thanks, Bart.