summaryrefslogtreecommitdiff
path: root/tools/perf/tests/sdt.c
diff options
context:
space:
mode:
authorTommi Rantala <tommi.t.rantala@nokia.com>2017-03-22 16:06:21 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-03-27 21:35:56 +0300
commit0e6ba11511aef91ba8e2528ddc681d88922d7b0b (patch)
treebfd066a73068f97059534cd3965a29a6041ea2ed /tools/perf/tests/sdt.c
parent5a2342111c68e623e27ee7ea3d0492d8dad6bda0 (diff)
downloadlinux-0e6ba11511aef91ba8e2528ddc681d88922d7b0b.tar.xz
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>
Diffstat (limited to 'tools/perf/tests/sdt.c')
-rw-r--r--tools/perf/tests/sdt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/tests/sdt.c b/tools/perf/tests/sdt.c
index f59d210e1baf..26e5b7a0b839 100644
--- a/tools/perf/tests/sdt.c
+++ b/tools/perf/tests/sdt.c
@@ -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;