linux-kernel - Re: [PATCH] proc: make proc_fd

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Message-ID: <20130826185622.GB30917@redhat.com>
Date:	Mon, 26 Aug 2013 20:56:22 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Willy Tarreau <w@....eu>, Al Viro <viro@...iv.linux.org.uk>,
	Andy Lutomirski <luto@...capital.net>,
	Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	Brad Spengler <spender@...ecurity.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] proc: make proc_fd_permission() thread-friendly

On 08/26, Oleg Nesterov wrote:
>
> And I also assume that you agree with this change ;)

At least I hope... Because I think this is another issue.

And because with or without a /proc/thread symlink, I believe that
people don't expect that /proc/self can restrict a sub-thread, and
CLONE_THREAS without CLONE_FILES is exotic.

Oleg.

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