Re: [PATCH] netfilter: nf_conntrack_sip: Fix inconsistent of format with argument type in nf_nat_sip.

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On Fri, Oct 09, 2020 at 03:03:35PM +0800, Ye Bin wrote:
> Fix follow warning:
> [net/netfilter/nf_nat_sip.c:469]: (warning) %u in format string (no. 1)
> requires 'unsigned int' but the argument type is 'int'.

Yes, but mangle_packet() takes unsigned int as buflen.

This needs a bit wider look that, I'm afraid, a robot cannot afford.

Thanks for submitting your patch in any case.

> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
> ---
>  net/netfilter/nf_nat_sip.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/netfilter/nf_nat_sip.c b/net/netfilter/nf_nat_sip.c
> index f0a735e86851..39754fb3a298 100644
> --- a/net/netfilter/nf_nat_sip.c
> +++ b/net/netfilter/nf_nat_sip.c
> @@ -466,7 +466,7 @@ static int mangle_content_len(struct sk_buff *skb, unsigned int protoff,
>  			      &matchoff, &matchlen) <= 0)
>  		return 0;
>  
> -	buflen = sprintf(buffer, "%u", c_len);
> +	buflen = sprintf(buffer, "%d", c_len);
>  	return mangle_packet(skb, protoff, dataoff, dptr, datalen,
>  			     matchoff, matchlen, buffer, buflen);
>  }
> -- 
> 2.16.2.dirty
> 



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