invalid read memory - valgrind

Here is my code: I am trying to get the info of an struct and deep copy the info. But, valgrind shows that "invalid read". I know that is I read the memory that is released. I don't know why; is anyone able to figure it out for me?

Code

#include  <stdlib.h>
#include  <stdio.h>
#include  <string.h>

struct student
{
    int id;
    char *name;
    int age;
};

void get_info(struct student *dest, struct student *src)
{
    memcpy(dest,src,sizeof(struct student));
    dest->name = strdup(src->name);
}

int main()
{
    struct student foo;
    foo.id = 1001;
    foo.name = strdup("kevin");
    foo.age = 18;

    struct student bar;
    get_info(&bar, &foo);

    puts(bar.name);

    free(foo.name);
    free(bar.name);

    return 0;
}

Valgrind report

valgrind --tool=memcheck --leak-check=full ./test
==2130== Memcheck, a memory error detector
==2130== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==2130== Using Valgrind-3.9.0 and LibVEX; rerun with -h for copyright info
==2130== Command: ./test
==2130== 
==2130== Invalid read of size 4
==2130==    at 0x40B083B: ??? (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x40B04A4: strdup (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x80484B1: get_info (test.c:15)
==2130==    by 0x80484F8: main (test.c:26)
==2130==  Address 0x419902c is 4 bytes inside a block of size 6 alloc'd
==2130==    at 0x4026775: malloc (vg_replace_malloc.c:291)
==2130==    by 0x40B04AF: strdup (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x80484D8: main (test.c:22)
==2130== 
==2130== Invalid read of size 4
==2130==    at 0x40B083B: ??? (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x409ACE4: puts (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x8048504: main (test.c:28)
==2130==  Address 0x4199064 is 4 bytes inside a block of size 6 alloc'd
==2130==    at 0x4026775: malloc (vg_replace_malloc.c:291)
==2130==    by 0x40B04AF: strdup (in /lib/tls/i686/cmov/libc-2.11.1.so)
==2130==    by 0x80484B1: get_info (test.c:15)
==2130==    by 0x80484F8: main (test.c:26)
==2130== 
kevin
==2130== 
==2130== HEAP SUMMARY:
==2130==     in use at exit: 0 bytes in 0 blocks
==2130==   total heap usage: 2 allocs, 2 frees, 12 bytes allocated
==2130== 
==2130== All heap blocks were freed -- no leaks are possible
==2130== 
==2130== For counts of detected and suppressed errors, rerun with: -v
==2130== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 11 from 6)