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Date:	Wed, 05 Dec 2012 12:53:26 -0500 (EST)
From:	David Miller <>
Subject: Re: [PATCH net-next 0/7] Allow to monitor multicast cache event
 via rtnetlink

From: Nicolas Dichtel <>
Date: Wed, 05 Dec 2012 12:02:50 +0100

> Le 04/12/2012 21:02, Nicolas Dichtel a écrit :
>> I can have a try on a tile platform. I don't have access to sparc or
>> mips.
> Hmm, I've read arm instead of mips! So I've tried on mips. Data are
> aligned on 32-bit, like for all netlink messages. nla_put_u64() will
> do the same, as it calls nla_put().
> And the kernel will only use memcpy() to treat this attribute. Reader
> will be in userland.

Then userland will trap if the 64-bit values are only 32-bit aligned.

That's the problem I'm talking about.

I don't want to export any more unaligned 64-bit values in netlink
messages, it's a complete mess.
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