From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:58246 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756576AbcKBRkN (ORCPT ); Wed, 2 Nov 2016 13:40:13 -0400 Date: Wed, 2 Nov 2016 19:38:26 +0100 From: Oleg Nesterov To: Linus Torvalds Cc: Jann Horn , Alexander Viro , Roland McGrath , John Johansen , James Morris , "Serge E. Hallyn" , Paul Moore , Stephen Smalley , Eric Paris , Casey Schaufler , Kees Cook , Andrew Morton , Janis Danisevskis , Seth Forshee , "Eric W. Biederman" , Thomas Gleixner , Benjamin LaHaise , Ben Hutchings , Andy Lutomirski , Krister Johansen , linux-fsdevel , LSM List , "security@kernel.org" Subject: Re: [PATCH v3 0/8] Various fixes related to ptrace_may_access() Message-ID: <20161102183826.GD1112@redhat.com> References: <1477863998-3298-1-git-send-email-jann@thejh.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On 11/01, Linus Torvalds wrote: > > Oleg, you're really the obvious maintainer choice at least for some of > this, Well. I still disagree with 1/8, I think we need to fix and cleanup the usage of cred_guard_mutex we already have. And to me the additional complications added by, say, 4/8 make no sense, we can make a much more simple change to avoid this leak "in practice". But. I never pretended I understand the security problems. So I won't really argue with these changes. Oleg.