Re: ld bug

[Willy Tarreau <willy@w.ods.org>]

Hello,

On Sun, Jun 12, 2005 at 05:10:50PM +0200, DJ.CnX@phreaker.net wrote:
> 
> hello guys....
> 
> source:
> 
> section .text
> 
> global main
> 
> msg db "och bin",0x0
> msg_len equ $-msg
> 
> main:
>            pusha
>            mov eax,4
>            mov ebx,1
>            mov ecx,msg
>            mov edx,msg_len
>            int 0x80
> 
>            popa
>            xor eax,eax
>            inc eax
>            int 0x80
> 
> 
> compilation command:
> sh# nasm -f elf -o new.o new.asm
> sh# ld -e main -o new new.o
> sh# strace ./new
> execve("./new", ["./new"], [/* 78 vars */]) = 0
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> i compiled the whole shit with gcc and it worked... .-/

Although this is not the right list for this, it seems that the start
pointer in your program is 0, and since this page is not mapped, you
get a segfault. How to fix this I don't know, but this definitely is
not a kernel bug.

Willy

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