diff -ur a/ioping.c b/ioping.c
--- a/ioping.c    2011-06-02 22:51:03.000000000 +0400
+++ b/ioping.c    2011-06-07 04:01:04.000000000 +0400
@@ -166,6 +166,7 @@
 char *path = NULL;
 char *fstype = "";
 char *device = "";
+short strduped = 0; 
 
 int fd;
 char *buf;
@@ -258,41 +259,43 @@
 
 void parse_device(dev_t dev)
 {
-    char *buf = NULL, *ptr;
-    unsigned major, minor;
-    struct stat st;
-    size_t len;
     FILE *file;
+    char *buf, *ptr;
+    unsigned major, minor;
+    size_t len = (~0);
 
     /* since v2.6.26 */
     file = fopen("/proc/self/mountinfo", "r");
-    if (!file)
-        goto old;
-    while (getline(&buf, &len, file) > 0) {
+
+    if (file != NULL) {
+    buf = calloc(1, PATH_MAX);
+        while (getline(&buf, &len, file) > 0) {
         sscanf(buf, "%*d %*d %u:%u", &major, &minor);
         if (makedev(major, minor) != dev)
             continue;
         ptr = strstr(buf, " - ") + 3;
         fstype = strdup(strsep(&ptr, " "));
-        device = strdup(strsep(&ptr, " "));
-        goto out;
-    }
-old:
-    /* for older versions */
-    file = fopen("/proc/mounts", "r");
-    if (!file)
+        device = strdup(strsep(&ptr, " "));                
+        }
+       } else {
+        /* for older versions */
+        file = fopen("/proc/mounts", "r");
+        if (!file)
         return;
-    while (getline(&buf, &len, file) > 0) {
+
+        struct stat st;
+
+        while (getline(&buf, &len, file) > 0) {
         ptr = buf;
         strsep(&ptr, " ");
         if (*buf != '/' || stat(buf, &st) || st.st_rdev != dev)
             continue;
         strsep(&ptr, " ");
         fstype = strdup(strsep(&ptr, " "));
-        device = strdup(buf);
-        goto out;
+        device = strdup(buf);                
+        }
     }
-out:
+        strduped = 1;
     free(buf);
     fclose(file);
 }
@@ -312,6 +315,12 @@
     sigaction(signo, &sa, NULL);
 }
 
+void free_on_exit(void) {
+    
+    if (strduped)
+        free(fstype), free(device);
+}
+
 int main (int argc, char **argv)
 {
     ssize_t ret_size;
@@ -323,6 +332,8 @@
     double time_sum, time_sum2, time_mdev, time_avg;
     double part_sum, part_sum2, part_mdev, part_avg;
 
+        atexit(free_on_exit);
+        
     parse_options(argc, argv);
 
     if (wsize)
@@ -379,7 +390,7 @@
 
     if (S_ISDIR(st.st_mode)) {
         char *tmpl = "/ioping.XXXXXX";
-        char *temp = malloc(strlen(path) + strlen(tmpl) + 1);
+        char *temp = calloc(1, PATH_MAX);
 
         if (!temp)
             err(2, NULL);
@@ -498,7 +509,7 @@
 
         usleep(interval);
     }
-
+    free(buf);
     time_total = now() - time_total;
 
     time_sum += part_sum;

patch -p1 < copy-n-paste.diff;

# valgrind --leak-check=full  --show-reachable=yes --track-origins=yes ./ioping -c5 .
==8328== Memcheck, a memory error detector
==8328== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==8328== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info
==8328== Command: ./ioping -c5 .
==8328== 
4096 bytes from . (tmpfs tmpfs): request=1 time=1.7 ms
4096 bytes from . (tmpfs tmpfs): request=2 time=0.1 ms
4096 bytes from . (tmpfs tmpfs): request=3 time=0.1 ms
4096 bytes from . (tmpfs tmpfs): request=4 time=0.1 ms
4096 bytes from . (tmpfs tmpfs): request=5 time=0.1 ms
--- . ioping statistics ---
5 requests completed in 4120.7 ms
min/avg/max/mdev = 0.1/0.4/1.7/0.7 ms
==8328== 
==8328== HEAP SUMMARY:
==8328==     in use at exit: 0 bytes in 0 blocks
==8328==   total heap usage: 6 allocs, 6 frees, 12,868 bytes allocated
==8328== 
==8328== All heap blocks were freed -- no leaks are possible
==8328== 
==8328== For counts of detected and suppressed errors, rerun with: -v
==8328== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 4 from 4)

Йес!!! Я спать! :)