On Thu, Mar 01, 2012 at 02:47:14PM +0530, santosh nayak wrote:
> From: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
>
> I am getting following error.
> " net/bridge/netfilter/ebtables.c:269 ebt_do_table()
> error: potential null derefence 'cs'"
>
> i = cs[sp].n; // If cs == Null then this will cause problem.
>
> Signed-off-by: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
> ---
> net/bridge/netfilter/ebtables.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
> index f3fcbd9..9c0f177 100644
> --- a/net/bridge/netfilter/ebtables.c
> +++ b/net/bridge/netfilter/ebtables.c
> @@ -209,8 +209,10 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
> smp_processor_id());
> if (private->chainstack)
> cs = private->chainstack[smp_processor_id()];
> - else
> + else {
> cs = NULL;
I just noticed we can remove this cs = NULL. No need to resend, I'll
mangle it myself.
> + goto out;
> + }
> chaininfo = private->hook_entry[hook];
> nentries = private->hook_entry[hook]->nentries;
> point = (struct ebt_entry *)(private->hook_entry[hook]->data);
> @@ -313,6 +315,7 @@ letscontinue:
> read_unlock_bh(&table->lock);
> return NF_ACCEPT;
> }
> +out:
> read_unlock_bh(&table->lock);
> return NF_DROP;
> }
> --
> 1.7.4.4
>
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