netdev - Re: [PATCH] ipv4: udp: fix short packet and bad checksum logging

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Message-ID: <1273157280.2853.9.camel@edumazet-laptop>
Date:	Thu, 06 May 2010 16:48:00 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Bjørn Mork <bjorn@...k.no>
Cc:	netdev@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH] ipv4: udp: fix short packet and bad checksum logging

Le jeudi 06 mai 2010 à 15:44 +0200, Bjørn Mork a écrit :
> commit 2783ef23 moved the initialisation of saddr and daddr after
> pskb_may_pull() to avoid a potential data corruption.  Unfortunately
> also placing it after the short packet and bad checksum error paths,
> where these variables are used for logging.  The result is bogus
> output like
> 
> [92238.389505] UDP: short packet: From 2.0.0.0:65535 23715/178 to 0.0.0.0:65535
> 
> Moving the saddr and daddr initialisation above the error paths, while still
> keeping it after the pskb_may_pull() to keep the fix from commit 2783ef23.
> 
> Signed-off-by: Bjørn Mork <bjorn@...k.no>
> Cc: stable@...nel.org
> ---
>  net/ipv4/udp.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)

Well done :)

Acked-by: Eric Dumazet <eric.dumazet@...il.com>

To be backported to 2.6.29 and up kernels ;)



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