Commit-ID: 0e6ba11511aef91ba8e2528ddc681d88922d7b0b Gitweb: http://git.kernel.org/tip/0e6ba11511aef91ba8e2528ddc681d88922d7b0b Author: Tommi Rantala <tommi.t.rant...@nokia.com> AuthorDate: Wed, 22 Mar 2017 15:06:21 +0200 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 27 Mar 2017 15:35:56 -0300
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.rant...@nokia.com> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/20170322130624.21881-4-tommi.t.rant...@nokia.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/tests/sdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/sdt.c b/tools/perf/tests/sdt.c index f59d210..26e5b7a 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;
