From 10fd30eb01e054349433760fcad0417d782afdec Mon Sep 17 00:00:00 2001
From: Jim Harris <james.r.harris@intel.com>
Date: Tue, 28 Mar 2017 11:07:14 -0700
Subject: [PATCH] app/trace: verify tsc_rate specified in shm is > 0

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: If60eb51a1a5bad4340eb2ec39a24ad13434e9044
---
 app/trace/trace.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/trace/trace.cpp b/app/trace/trace.cpp
index 9f53b010f..ecd4e96c0 100644
--- a/app/trace/trace.cpp
+++ b/app/trace/trace.cpp
@@ -378,6 +378,11 @@ int main(int argc, char **argv)
 	g_histories = (struct spdk_trace_histories *)history_ptr;
 
 	tsc_rate = g_histories->tsc_rate;
+	if (tsc_rate == 0) {
+		fprintf(stderr, "Invalid tsc_rate %ju\n", tsc_rate);
+		usage();
+		exit(-1);
+	}
 
 	if (verbose) {
 		printf("TSC Rate: %ju\n", tsc_rate);