Questions about the "Smashing the Stack for Fun And Profit" sample code

[metalhead]

Hi guys,

I'm newbie in the security field and I've recently started to read the famous paper of Aleph One "Smashing the Stack for Fun And Profit".
I have some problems running the sample code that Aleph1 provides though.

I have managed to run all the examples until the exploit2.c which gives me a sigsegv.

The problem seems to be in this piece of code:

ptr = buff;
addr_ptr = (long *) ptr;
for (i = 0; i < bsize; i+=4)
  *(addr_ptr++) = addr;   

Does anyone know what might be responsible for the segmentation fault?

I have compiled it without the stack protector (-fno-stack-protector) and I have disabled aslr.

Thanks in advance