[Xen-devel] [PATCH v2] xenbaked.c: Avoid divide by zero issue

[Joe Jin <joe.jin@xxxxxxxxxx>]

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@xxxxxxxxxx>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 tools/xenmon/xenbaked.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

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();
 }
-- 
2.14.3 (Apple Git-98)


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