--- old/src/share/vm/logging/logFileOutput.cpp	2016-03-29 23:36:07.006778103 +0900
+++ new/src/share/vm/logging/logFileOutput.cpp	2016-03-29 23:36:06.824779017 +0900
@@ -116,12 +116,19 @@
       _archive_name_len = 2 + strlen(_file_name) + _file_count_max_digits;
       _archive_name = NEW_C_HEAP_ARRAY(char, _archive_name_len, mtLogging);
     } else if (strcmp(FileSizeOptionKey, key) == 0) {
-      size_t value = parse_value(value_str);
-      if (value == SIZE_MAX || value > SIZE_MAX / K) {
+      size_t value;
+      if (Arguments::atomull(value_str, &value)) {
+        if (value <= SIZE_MAX) {
+          _rotate_size = value;
+          success = true;
+        } else {
+          success = false;
+        }
+        break;
+      } else {
         success = false;
         break;
       }
-      _rotate_size = value * K;
     } else {
       success = false;
       break;