Re: Problem in "copy_to

To:	kernel coder <lhrkernelcoder@gmail.com>
Subject:	Re: Problem in "copy_to_user"
From:	Ralf Baechle <ralf@linux-mips.org>
Date:	Tue, 25 Oct 2005 10:03:49 +0100
Cc:	linux-mips@linux-mips.org
In-reply-to:	<f69849430510242312j5e943bbcj4d1b50e0b236662a@mail.gmail.com>
Original-recipient:	rfc822;linux-mips@linux-mips.org
References:	<f69849430510242312j5e943bbcj4d1b50e0b236662a@mail.gmail.com>
Sender:	linux-mips-bounce@linux-mips.org
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On Mon, Oct 24, 2005 at 11:12:45PM -0700, kernel coder wrote:

>    i'm trying to run oprofile on 2.6 kernel running on mips board.But
> when oprofile makes a system call to "sys_lookup_dcookie" function to
> find the file path of a particular sample,the function "copy_to_user"
> fails and no byte of path is copied to user sapce.
> 
> I checked all combinations for source buffer like using array instead
> of pointer but no success.
> Please suggest me what might be the cause of failure.

This bug in the oprofile userspace tools was fixed about a week ago.

  Ralf

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Re: Problem in "copy_to_user"