linux-kernel - Re: [PATCH] fs: add missing compat_ptr handling for FS_IOC

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Message-Id: <200911031232.12245.arnd@arndb.de>
Date:	Tue, 3 Nov 2009 12:32:12 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Ankit Jain <me@...itjain.org>,
	Christoph Hellwig <hch@....de>,
	Al Viro <viro@...iv.linux.org.uk>,
	Arnd Bergmann <arndbergmann@...glemail.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] fs: add missing compat_ptr handling for FS_IOC_RESVSP ioctl

On Tuesday 03 November 2009, Heiko Carstens wrote:
> 
> From: Heiko Carstens <heiko.carstens@...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@...itjain.org>
> Cc: Christoph Hellwig <hch@....de>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: Arnd Bergmann <arndbergmann@...glemail.com>
> Acked-by: David S. Miller <davem@...emloft.net>
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>

Acked-by: Arnd Bergmann <arnd@...db.de>
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