Given this code , which is a part of a bigger code , but it's the blame . 

In `int main()` I do this : 

```
int main(int argc, char* argv[]) {

// code 

// code 

path2 = (char*)malloc(strlen(currentDir)*sizeof(char));

traverseDirectories(path2 , filename);

free(path2);
}

```

The error :

```
a@ubuntu:~/Desktop$ ./exer4 fsdfsdfdafsd/ exer4
Could not open: No such file or directory
*** glibc detected *** ./exer4: free(): invalid next size (normal): 0x08b54038 ***
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x6ebc2)[0x93ebc2]
/lib/i386-linux-gnu/libc.so.6(+0x6f862)[0x93f862]
/lib/i386-linux-gnu/libc.so.6(cfree+0x6d)[0x94294d]
/lib/i386-linux-gnu/libc.so.6(fclose+0x154)[0x92e0b4]
/lib/i386-linux-gnu/libc.so.6(perror+0xc5)[0x920a45]
./exer4[0x8048f52]
./exer4[0x8048b34]
./exer4[0x8048a99]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x8e9113]
./exer4[0x80487c1]
======= Memory map: ========
00398000-003b4000 r-xp 00000000 08:01 394171     /lib/i386-linux-gnu/libgcc_s.so.1
003b4000-003b5000 r--p 0001b000 08:01 394171     /lib/i386-linux-gnu/libgcc_s.so.1
003b5000-003b6000 rw-p 0001c000 08:01 394171     /lib/i386-linux-gnu/libgcc_s.so.1
008d0000-00a46000 r-xp 00000000 08:01 394150     /lib/i386-linux-gnu/libc-2.13.so
00a46000-00a48000 r--p 00176000 08:01 394150     /lib/i386-linux-gnu/libc-2.13.so
00a48000-00a49000 rw-p 00178000 08:01 394150     /lib/i386-linux-gnu/libc-2.13.so
00a49000-00a4c000 rw-p 00000000 00:00 0 
00b5a000-00b5b000 r-xp 00000000 00:00 0          [vdso]
00c4b000-00c69000 r-xp 00000000 08:01 394137     /lib/i386-linux-gnu/ld-2.13.so
00c69000-00c6a000 r--p 0001d000 08:01 394137     /lib/i386-linux-gnu/ld-2.13.so
00c6a000-00c6b000 rw-p 0001e000 08:01 394137     /lib/i386-linux-gnu/ld-2.13.so
08048000-0804a000 r-xp 00000000 08:01 947365     /home/a/Desktop/exer4
0804a000-0804b000 r--p 00001000 08:01 947365     /home/a/Desktop/exer4
0804b000-0804c000 rw-p 00002000 08:01 947365     /home/a/Desktop/exer4
08b54000-08b75000 rw-p 00000000 00:00 0          [heap]
b7600000-b7621000 rw-p 00000000 00:00 0 
b7621000-b7700000 ---p 00000000 00:00 0 
b775f000-b7760000 rw-p 00000000 00:00 0 
b776f000-b7771000 rw-p 00000000 00:00 0 
bf87d000-bf89e000 rw-p 00000000 00:00 0          [stack]
Aborted

```

And here are the methods :

```
int traverseDirectories(char * path , const char * filename)
{

    // printf("\nCurrent path is :%s\n " , path);
    struct dirent *direntp = NULL;
    DIR *dirp = NULL;
    size_t path_len;
    char full_name[BUFFER];
    strcpy(full_name, path);

    displayAllFiles(full_name , filename);  // display the file details to STDOUT

// code 
// code 

}

void displayAllFiles(char * directory , char * filename)
{
    struct stat st;
    DIR *dir;
    struct dirent *ent;

    char fullPathDirectory[BUFFER];
    char fileDetails[BUFFER];

    memset(fullPathDirectory, '\0', BUFFER);   // reset the array of the input
    memset(fileDetails, '\0', BUFFER);   // reset the array of the input

    dir = opendir (directory);

    if (dir != NULL)
    {

         // print all the files and directories within directory
         while ((ent = readdir (dir)) != NULL)
         {
             if (strcmp(ent->d_name , filename) == 0)
             {
                  // printf("\nFile found!\n");

                  strcpy(fullPathDirectory , directory);
                  strcat(fullPathDirectory , "/");
                  strcat(fullPathDirectory , filename);

                  if (lstat(fullPathDirectory, &st) < 0)
                  {
                      perror(ent->d_name);
                      putchar('\n');
                      continue;
                  }

                  displayProperties(&st , fileDetails);

                  printf("\n%s" , fileDetails); // print file details
                  printf("%s\n" , fullPathDirectory); // print file path
             }

         }
         closedir (dir);
    }

    else
    {
     // could not open directory
     perror ("Could not open");
     free(directory);
     exit(EXIT_FAILURE);
    }

}

```

I `free` the `directory` in method `displayAllFiles` , but even though I get this message when executing : 

```
./exer4 fsdfsdfdafsd/ exer4

```

The program doesn't find the folder `fsdfsdfdafsd` , and this is OK , but why does it print all the backtrace ? all I wanted it to do is to print that `no such file or directory` .

Any ideas ? 

Thanks