[Samba] [3.2.0] Off by one error

James Kosin JKosin at intcomgrp.com
Wed Jul 2 18:09:48 GMT 2008


-----Original Message-----
From: Jeremy Allison [mailto:jra at samba.org] 
Sent: Wednesday, July 02, 2008 12:57 PM
To: James Kosin
Cc: samba at lists.samba.org
Subject: Re: [Samba] [3.2.0] Off by one error

On Wed, Jul 02, 2008 at 12:32:46PM -0400, James Kosin wrote:
> Jerry,
> 
> The 3.2.0 release is reporting this in the log.nmbd
> [root at beta samba]# cat log.nmbd
> [2008/07/02 12:26:52,  0] nmbd/nmbd.c:main(849)
>   nmbd version 3.2.0 started.
>   Copyright Andrew Tridgell and the Samba Team 1992-2008
> [2008/07/02 12:26:52,  0] lib/util_str.c:safe_strcpy_fn(709)
>  ERROR: string overflow by 1 (16 - 15) in safe_strcpy [192.168.100.20/24]
>  
>  Other than this issue; no real problems.

Great (the no problems part) ! Can you attach with gdb to this error
message and get a backtrace when it occurs please ?

Thanks,

	Jeremy.

---
Jeremy,

I'd need some pointers, I'm not all that familiar with gdb, and there is no way to stop on the error.  NMDB still runs after displaying this; so, I don't think a back-trace will help find it when I kill the process.

It looks as though it may be trying to copy the allowable IP addresses into a structure that only has space for 15 characters.  The ip [192.168.100.20/24] ends up being in the config file 
[root at beta samba]# cat smb.conf | grep 192.168.100.20/24
   interfaces = 192.168.100.20/24



James



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