NASM Question

Below is a small assembly program that is supposed to create a file with the filename
myfile.txt, which is stored in the file_name "variable." The problem is the program
actually creates a file called "myfile.txtWelcome to Tutorials PointWritten to file\n".
Any ideas why the filename is getting mangled. According to the create call, I need to
provide the pointer to the name and the file mode. What I don't understand is why the
pointer to the filename is picking up the other strings.

; Taken from http://www.tutorialspoint.com/assembly_programming/assembly_file_management.htm
section	.data
    file_name db 'myfile.txt'
    msg db 'Welcome to Tutorials Point'
    len equ $-msg

    msg_done db 'Written to file', 0xa
    len_done equ $-msg_done

section .bss
    fd_out resb 1
    fd_in resb 1
    info resb 26

section	.text
    global _start

_start:
    ;create the file
    mov eax,8
    mov ebx,file_name
    mov ecx,0777	;read, write and execute by all
    int 0x80		;call kernel

    ; put file descriptor in fd_out
    mov [fd_out],eax

    ; exit the program
    mov eax,1
    int 0x80

Needed to end the file_name string with a null byte so it looks like this now.

file_name 'myfile.txt', 0x00