netdev - Re: [PATCH net-next] ipv6: fix compiler warning in ipv6_exthdrs

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Message-Id: <20131214.020211.969354536190248209.davem@davemloft.net>
Date:	Sat, 14 Dec 2013 02:02:11 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	hannes@...essinduktion.org
Cc:	hkchu@...gle.com, edumazet@...gle.com, herbert@...dor.apana.org.au,
	ogerlitz@...lanox.com, bhutchings@...arflare.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] ipv6: fix compiler warning in ipv6_exthdrs_len

From: Hannes Frederic Sowa <hannes@...essinduktion.org>
Date: Sat, 14 Dec 2013 07:29:29 +0100

> Commit 299603e8370a93dd5d8e8d800f0dff1ce2c53d36 ("net-gro: Prepare GRO
> stack for the upcoming tunneling support") used an uninitialized variable
> which leads to the following compiler warning:
> 
> net/ipv6/ip6_offload.c: In function ‘ipv6_gro_complete’:
> net/ipv6/ip6_offload.c:178:24: warning: ‘optlen’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>     opth = (void *)opth + optlen;
>                         ^
> net/ipv6/ip6_offload.c:164:22: note: ‘optlen’ was declared here
>   int len = 0, proto, optlen;
>                       ^
> Fix it up.
> 
> Cc: Jerry Chu <hkchu@...gle.com>
> Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

Applied.