Re: shutdown oops in xt_compat_calc_jump

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On 05.04.2011 09:17, Eric Dumazet wrote:
> Here is the cumulative patch


Thanks Eric. I'll wait for confirmation from Dann before applying this.

> [PATCH] netfilter: fix ebtables
> 
> commit 255d0dc34068a976 (netfilter: x_table: speedup compat operations)
> made ebtables not working anymore.
> 
> 1) xt_compat_calc_jump() is not an exact match lookup, and 
> 2) compat_table_info() has a typo in xt_compat_init_offsets() call
> 3) compat_do_replace() misses a xt_compat_init_offsets() call
> 
> Reported-by: dann frazier <dannf@xxxxxxxxx>
> Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> ---
>  net/bridge/netfilter/ebtables.c |    3 ++-
>  net/netfilter/x_tables.c        |    3 +++
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
> index 893669c..c66aa80 100644
> --- a/net/bridge/netfilter/ebtables.c
> +++ b/net/bridge/netfilter/ebtables.c
> @@ -1766,7 +1766,7 @@ static int compat_table_info(const struct ebt_table_info *info,
>  
>  	newinfo->entries_size = size;
>  
> -	xt_compat_init_offsets(AF_INET, info->nentries);
> +	xt_compat_init_offsets(NFPROTO_BRIDGE, info->nentries /* + 4*/);

I assume the /* + 4 */ is left over from debugging, I'll remove it
before applying.
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