Commit 0e6ba115 authored Mar 22, 2017 by Tommi Rantala Committed by Arnaldo Carvalho de Melo Mar 27, 2017

perf tests: Do not assume that readlink() returns a null terminated string



Ensure that the string in buf is null terminated.

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-4-tommi.t.rantala@nokia.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 5a234211

tools/perf/tests/sdt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -43,7 +43,7 @@ static char *get_self_path(void)
		{
		char *buf = calloc(PATH_MAX, sizeof(char));

		if (buf && readlink("/proc/self/exe", buf, PATH_MAX) < 0) {
		if (buf && readlink("/proc/self/exe", buf, PATH_MAX - 1) < 0) {
		pr_debug("Failed to get correct path of perf\n");
		free(buf);
		return NULL;