1 files changed, 13 insertions, 2 deletions

diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index f6966721..bd060218 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -233,9 +233,10 @@ process_arguments (int argc, char **argv)
         struct name_list **fstail = &fs_exclude_list;
         struct name_list **dptail = &dp_exclude_list;
         struct name_list *temp_list;
-        unsigned long l;
         int result = OK;
 
+        unsigned long l;
+
         int option_index = 0;
         static struct option long_options[] = {
                 {"timeout", required_argument, 0, 't'},
@@ -322,6 +323,8 @@ process_arguments (int argc, char **argv)
                                 usage (_("Critical threshold must be integer or percentage!\n"));
                         }
                 case 'u':
+                        if (units)
+                                free(units);
                         if (! strcmp (optarg, "bytes")) {
                                 mult = (uintmax_t)1;
                                 units = strdup ("B");
@@ -340,13 +343,19 @@ process_arguments (int argc, char **argv)
                         } else {
                                 die (STATE_UNKNOWN, _("unit type %s not known\n"), optarg);
                         }
+                        if (units == NULL)
+                                die (STATE_UNKNOWN, _("failed allocating storage for '%s'\n"), "units");
                         break;
                 case 'k': /* display mountpoint */
                         mult = 1024;
+                        if (units)
+                                free(units);
                         units = strdup ("kB");
                         break;
                 case 'm': /* display mountpoint */
                         mult = 1024 * 1024;
+                        if (units)
+                                free(units);
                         units = strdup ("kB");
                         break;
                 case 'l':
@@ -475,8 +484,10 @@ INPUT ERROR: C_DF (%lu) should be less than W_DF (%lu) and both should be greate
                 return ERROR;
         }
         
-        if (units == NULL)
+        if (units == NULL) {
                 units = strdup ("MB");
+                mult = (uintmax_t)1024 * 1024;
+        }
         return OK;
 }