From: Joe Jin <joe.jin@ORACLE.COM>
Date: Wed, 14 Mar 2018 17:14:03 +0000 (-0700)
Subject: xenbaked.c: Avoid divide by zero issue
X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~357
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=2e3a96810a37c0e58e9c59a5ef7439968a410c70;p=xen.git

xenbaked.c: Avoid divide by zero issue

xenbaked.c -> dump_stats(), run_time = time(&end_time) - time(&start_time),
time() returns the value in seconds. If one cancels xenmon.py immediately
after started, run_time can be zero, and then xenbaked will hit divide by
zero fault.

Signed-off-by: Joe Jin <joe.jin@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---

diff --git a/tools/xenmon/xenbaked.c b/tools/xenmon/xenbaked.c
index 3d9e0ed900..d3f940a26b 100644
--- a/tools/xenmon/xenbaked.c
+++ b/tools/xenmon/xenbaked.c
@@ -243,10 +243,12 @@ static void dump_stats(void)
     }
 
     printf("processed %d total records in %d seconds (%ld per second)\n",
-           rec_count, (int)run_time, (long)(rec_count/run_time));
+           rec_count, (int)run_time,
+           run_time ? (long)(rec_count/run_time) : 0L);
 
-    printf("woke up %d times in %d seconds (%ld per second)\n", wakeups,
-	   (int) run_time, (long)(wakeups/run_time));
+    printf("woke up %d times in %d seconds (%ld per second)\n",
+           wakeups, (int) run_time,
+           run_time ? (long)(wakeups/run_time) : 0L);
 
     check_gotten_sum();
 }