Jan Engelhardt wrote:
> On Monday 2010-03-01 20:33, Pablo Neira Ayuso wrote:
> 
>>>>>>> +#define ALIGN_SIZE 8
>>>>>> Minor question: why align this to 64 bits?
>>>>> I originally used an alignment to 32 bits, but Jan noticed it would
>>>>> break if using options/values on 64 bits (and a test confirmed that). I
>>>>> took 64 bits as the biggest allowed value for integers.
>>>> I would need to look into this in more detail, not sure where the
>>>> problem is. I think that you can use something like `struct nlattr' (see
>>>> include/linux/netlink.h) and then nla_put() to add attributes in the TLV
>>>> format (see lib/nlattr.c). Those are align-safe. I'm using something
>>>> similar for conntrackd for the synchronization messages (src/build.c and
>>>> src/parse.c).
> 
> If they are align-safe, what's this? :-)

Could you tell me where did I say that libnetfilter_conntrack is using
those functions that I recommended?

> 18:41 ares:/home/jengelh # conntrack -L
> Bus error
> 18:41 ares:/home/jengelh # file `which conntrack`
> /usr/sbin/conntrack: ELF 32-bit MSB executable, SPARC32PLUS, V8+ Required,
> version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.4,
> not stripped

The following patch should fix the problem that you are reporting. Let
me know if you have more issues.