Re: [PATCH] net: Add back alignment for size for __alloc_skb

From: David Miller
Date: Wed Nov 02 2011 - 19:10:08 EST


From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
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.

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