Re: [PATCH][EBTABLES] fix smp race

How can one trigger this bug?

--

Best Regards,

Shaun Reitan
Account Specialist
www.NDCHost.com
www.cPlicensing.net

"Bart De Schuymer" <[email protected]> wrote
in message news:1110834369.3387.10.camel-bi+AKbBUZKY6gyzm1THtWVQUfZaNqxct@public.gmane.org
> Hi Dave,
>
> The patch below fixes an smp race that happens on such systems under
> heavy load.
> This bug was reported and solved by Steve Herrell
> <steve_herrell-FFYn/[email protected]>
>
> cheers,
> Bart
>
> Signed-off-by: Bart De Schuymer
<[email protected]>
>
> --- linux-2.6.11.3/net/bridge/netfilter/ebtables.c.old 2005-03-14
21:31:46.668325296 +0100
> +++ linux-2.6.11.3/net/bridge/netfilter/ebtables.c 2005-03-14
21:40:48.474958168 +0100
> @@ -179,9 +179,10 @@ unsigned int ebt_do_table (unsigned int
>   struct ebt_chainstack *cs;
>   struct ebt_entries *chaininfo;
>   char *base;
> - struct ebt_table_info *private = table->private;
> + struct ebt_table_info *private;
>
>   read_lock_bh(&table->lock);
> + private = table->private;
>   cb_base = COUNTER_BASE(private->counters, private->nentries,
>      smp_processor_id());
>   if (private->chainstack)
>
>
>
>
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