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From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: tony@atomide.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org
Subject: Re: [PATCH] net: Add back alignment for size for __alloc_skb
Date: Wed, 02 Nov 2011 19:09:55 -0400 (EDT)	[thread overview]
Message-ID: <20111102.190955.1902322759075682192.davem@davemloft.net> (raw)
In-Reply-To: <4EB1CA4F.3090403@gmail.com>

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 02 Nov 2011 23:55:11 +0100

> There is a problem with your kmalloc() or alignments on your architecture.
> 
> What is the SMP_CACHE_BYTES value ?

kmalloc() behavior doesn't have anything to do with this bug.

The issue is calculation of skb->end, which is based upon calculated
'size' variable.

skb->end determines alignment of skb_shared_info, which is where the
alignment problem is occuring for Tony.


  reply	other threads:[~2011-11-02 23:10 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-02 22:43 Tony Lindgren
2011-11-02 22:55 ` Eric Dumazet
2011-11-02 23:09   ` David Miller [this message]
2011-11-02 23:13     ` David Miller
2011-11-02 23:14     ` Eric Dumazet
2011-11-02 23:17       ` David Miller
2011-11-02 23:19         ` Tony Lindgren
2011-11-02 23:20           ` Eric Dumazet
2011-11-02 23:24             ` Tony Lindgren
2011-11-02 23:31               ` Eric Dumazet
2011-11-02 23:40                 ` Tony Lindgren
2011-11-03 22:09                   ` David Miller
2011-11-02 23:22           ` David Miller

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