linux-kernel - Re: [PATCH -tip] uaccess: fix parameters inversion for __copy_from_user

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Date:	Tue, 16 Sep 2008 07:42:16 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
Cc:	linux-kernel@...r.kernel.org, Steven Noonan <steven@...inklabs.net>
Subject: Re: [PATCH -tip] uaccess: fix parameters inversion for
	__copy_from_user_inatomic()


* Hiroshi Shimamoto <h-shimamoto@...jp.nec.com> wrote:

> From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> 
> The following patch changes to use __copy_from_user_inatomic(),
> but the passing parameters incorrect.
> 
>     x86: some lock annotations for user copy paths, v3
> 
>     - add annotation back to clear_user()
>     - change probe_kernel_address() to _inatomic*() method
> 
> Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> ---
>  include/linux/uaccess.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
> index 2062293..6b58367 100644
> --- a/include/linux/uaccess.h
> +++ b/include/linux/uaccess.h
> @@ -78,7 +78,7 @@ static inline unsigned long __copy_from_user_nocache(void *to,
>  							\
>  		set_fs(KERNEL_DS);			\
>  		pagefault_disable();			\
> -		ret = __copy_from_user_inatomic((__force typeof(retval) __user *)(addr), &(retval), sizeof(retval));		\
> +		ret = __copy_from_user_inatomic(&(retval), (__force typeof(retval) __user *)(addr), sizeof(retval));		\

*blush*. Thanks!

	Ingo
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