netdev - Re: [PATCH] net/compat: fix dev_ifsioc emulation corner cases

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Message-Id: <20091111.195640.82952998.davem@davemloft.net>
Date:	Wed, 11 Nov 2009 19:56:40 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	arnd@...db.de
Cc:	linux-kernel@...r.kernel.org, patrick.ohly@...el.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH] net/compat: fix dev_ifsioc emulation corner cases

From: Arnd Bergmann <arnd@...db.de>
Date: Wed, 11 Nov 2009 14:39:40 +0100

> Handling for SIOCSHWTSTAMP is broken on architectures
> with a split user/kernel address space like s390,
> because it passes a real user pointer while using
> set_fs(KERNEL_DS).
> A similar problem might arise the next time somebody
> adds code to dev_ifsioc.
> 
> Split up dev_ifsioc into three separate functions for
> SIOCSHWTSTAMP, SIOC*IFMAP and all other numbers so
> we can get rid of set_fs in all potentially affected
> cases.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied.

> Resending this one as well, rebased to current net-next.
> Please tell me if you want a backport to 2.6.32 or -stable
> for this one.
> 

No.
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