Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...

[deliverable/linux.git] / tools / perf / builtin-stat.c

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 875bf2675326a1d86169cd31c4923eab769cb3af..861f0aec77aeacf099653d87ca9c6df9b6f2787c 100644 (file)
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1179,6 +1179,12 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
                fprintf(stderr, "cannot use both --output and --log-fd\n");
                usage_with_options(stat_usage, options);
        }
+
+       if (output_fd < 0) {
+               fprintf(stderr, "argument to --log-fd must be a > 0\n");
+               usage_with_options(stat_usage, options);
+       }
+
        if (!output) {
                struct timespec tm;
                mode = append_file ? "a" : "w";
@@ -1190,7 +1196,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
                }
                clock_gettime(CLOCK_REALTIME, &tm);
                fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
-       } else if (output_fd != 2) {
+       } else if (output_fd > 0) {
                mode = append_file ? "a" : "w";
                output = fdopen(output_fd, mode);
                if (!output) {