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Date:	Mon, 24 May 2010 21:29:34 -0400
From:	Mike Frysinger <>
To:	Roland McGrath <>
Cc:	Oleg Nesterov <>,,, David Howells <>,
	Paul Mundt <>,,
	Andrew Morton <>
Subject: Re: [Uclinux-dist-devel] [PATCH -mm 1/1] ptrace: PTRACE_GETFDPIC: fix 
	the unsafe usage of child->mm

On Mon, May 24, 2010 at 19:42, Roland McGrath wrote:
>> You mean, pass it to arch_ptrace() ?
>> grep, grep, grep. I guess I understand you. We have more unsafe code
>> like this in arch/*/kernel/ptrace.c. Of course, it can be fixed without
>> doing get_task_mm() in sys_ptrace(), but perhaps it would be more clean
>> to do what you suggest.
>> Roland, what do you think?
> The mm pointer is only used by these uncommon ptrace operations that exist
> only in certain unusual arch's (and they're all ill-advised old arch ptrace
> ABI additions, at that).

are you suggesting the FDPIC additions are ill-advised as well ?
curious how you would have implemented this if that's the case ...
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