Date: Thu, 29 Oct 2009 01:39:13 -0700 (PDT)
Message-Id: <20091029.013913.258759148.davem@davemloft.net>
To: heiko.carstens@de.ibm.com
Cc: arndbergmann@googlemail.com, airlied@linux.ie,
       dri-devel@lists.sourceforge.net, andi@firstfloor.org,
       linux-kernel@vger.kernel.org, schwidefsky@de.ibm.com, me@ankitjain.org,
       hch@lst.de, viro@zeniv.linux.org.uk
Subject: Re: is avoiding compat ioctls possible?
From: David Miller <davem@davemloft.net>
In-Reply-To: <20091029083415.GA6639@osiris.boeblingen.de.ibm.com>
References: <200910281640.18491.arnd@arndb.de>
	<20091028.224157.92041844.davem@davemloft.net>
	<20091029083415.GA6639@osiris.boeblingen.de.ibm.com>
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From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 29 Oct 2009 09:34:16 +0100

> Subject: [PATCH] fs: add missing compat_ptr handling for FS_IOC_RESVSP ioctl
> 
> From: Heiko Carstens <heiko.carstens@de.ibm.com>
> 
> For FS_IOC_RESVSP and FS_IOC_RESVSP64 compat_sys_ioctl() uses its
> arg argument as a pointer to userspace. However it is missing a
> a call to compat_ptr() which will do a proper pointer conversion.
> 
> This was introduced with 3e63cbb1 "fs: Add new pre-allocation ioctls
> to vfs for compatibility with legacy xfs ioctls".
> 
> Cc: Ankit Jain <me@ankitjain.org>
> Cc: Christoph Hellwig <hch@lst.de>
> Cc: Al Viro <viro@zeniv.linux.org.uk>
> Cc: Arnd Bergmann <arndbergmann@googlemail.com>
> Reported-by: David Miller <davem@davemloft.net>
> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

Acked-by: David S. Miller <davem@davemloft.net>
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