linux-kernel - Re: [PATCH] sparc: copy_from_user() should not return -EFAULT

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Message-Id: <20100105.204201.34378986.davem@davemloft.net>
Date:	Tue, 05 Jan 2010 20:42:01 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	heiko.carstens@...ibm.com
Cc:	arjan@...radead.org, arnd@...db.de, mingo@...e.hu,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sparc: copy_from_user() should not return -EFAULT

From: Heiko Carstens <heiko.carstens@...ibm.com>
Date: Tue, 5 Jan 2010 16:22:15 +0100

> Subject: [PATCH] sparc: copy_from_user() should not return -EFAULT
> 
> From: Heiko Carstens <heiko.carstens@...ibm.com>
> 
> Callers of copy_from_user() expect it to return the number of bytes
> it could not copy. In no case it is supposed to return -EFAULT.
> 
> In case of a detected buffer overflow just return the requested
> length. In addition one could think of a memset that would clear
> the size of the target object.
> 
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>

Applied, thanks again for catching this.
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