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[209.132.180.67]) by mx.google.com with ESMTP id q25si4284684oij.74.2020.03.09.12.45.31; Mon, 09 Mar 2020 12:45:50 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=xmission.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726523AbgCITor (ORCPT + 99 others); Mon, 9 Mar 2020 15:44:47 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:60524 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726168AbgCITor (ORCPT ); Mon, 9 Mar 2020 15:44:47 -0400 Received: from in01.mta.xmission.com ([166.70.13.51]) by out01.mta.xmission.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jBOKT-0000LK-LE; Mon, 09 Mar 2020 13:44:45 -0600 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95] helo=x220.xmission.com) by in01.mta.xmission.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.87) (envelope-from ) id 1jBOKS-0006B0-CQ; Mon, 09 Mar 2020 13:44:45 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: "Dmitry V. Levin" Cc: Bernd Edlinger , Christian Brauner , Kees Cook , Jann Horn , Jonathan Corbet , Alexander Viro , Andrew Morton , Alexey Dobriyan , Thomas Gleixner , Oleg Nesterov , Frederic Weisbecker , Andrei Vagin , Ingo Molnar , "Peter Zijlstra \(Intel\)" , Yuyang Du , David Hildenbrand , Sebastian Andrzej Siewior , Anshuman Khandual , David Howells , James Morris , Greg Kroah-Hartman , Shakeel Butt , Jason Gunthorpe , Christian Kellner , Andrea Arcangeli , Aleksa Sarai , "linux-doc\@vger.kernel.org" , "linux-kernel\@vger.kernel.org" , "linux-fsdevel\@vger.kernel.org" , "linux-mm\@kvack.org" , "stable\@vger.kernel.org" , "linux-api\@vger.kernel.org" References: <87v9ne5y4y.fsf_-_@x220.int.ebiederm.org> <87zhcq4jdj.fsf_-_@x220.int.ebiederm.org> <878sk94eay.fsf@x220.int.ebiederm.org> <87r1y12yc7.fsf@x220.int.ebiederm.org> <87k13t2xpd.fsf@x220.int.ebiederm.org> <87d09l2x5n.fsf@x220.int.ebiederm.org> <871rq12vxu.fsf@x220.int.ebiederm.org> <20200309193332.GA13534@altlinux.org> Date: Mon, 09 Mar 2020 14:42:26 -0500 In-Reply-To: <20200309193332.GA13534@altlinux.org> (Dmitry V. Levin's message of "Mon, 9 Mar 2020 22:33:33 +0300") Message-ID: <871rq11fj1.fsf@x220.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1jBOKS-0006B0-CQ;;;mid=<871rq11fj1.fsf@x220.int.ebiederm.org>;;;hst=in01.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX19p24kmlglnsW31glyAX+zom+2dc6zCzvk= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on sa06.xmission.com X-Spam-Level: X-Spam-Status: No, score=0.5 required=8.0 tests=ALL_TRUSTED,BAYES_50, DCC_CHECK_NEGATIVE,T_TM2_M_HEADER_IN_MSG,T_TooManySym_01,XMSubLong autolearn=disabled version=3.4.2 X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.8 BAYES_50 BODY: Bayes spam probability is 40 to 60% * [score: 0.4912] * 0.7 XMSubLong Long Subject * 0.0 T_TM2_M_HEADER_IN_MSG BODY: No description available. * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;"Dmitry V. Levin" X-Spam-Relay-Country: X-Spam-Timing: total 532 ms - load_scoreonly_sql: 0.04 (0.0%), signal_user_changed: 2.9 (0.5%), b_tie_ro: 2.0 (0.4%), parse: 0.91 (0.2%), extract_message_metadata: 14 (2.5%), get_uri_detail_list: 0.75 (0.1%), tests_pri_-1000: 24 (4.5%), tests_pri_-950: 1.48 (0.3%), tests_pri_-900: 1.29 (0.2%), tests_pri_-90: 28 (5.3%), check_bayes: 27 (5.0%), b_tokenize: 11 (2.1%), b_tok_get_all: 7 (1.3%), b_comp_prob: 2.4 (0.4%), b_tok_touch_all: 3.6 (0.7%), b_finish: 0.65 (0.1%), tests_pri_0: 445 (83.7%), check_dkim_signature: 0.64 (0.1%), check_dkim_adsp: 2.7 (0.5%), poll_dns_idle: 0.98 (0.2%), tests_pri_10: 1.98 (0.4%), tests_pri_500: 9 (1.7%), rewrite_mail: 0.00 (0.0%) Subject: Re: [PATCH v2 5/5] exec: Add a exec_update_mutex to replace cred_guard_mutex X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org "Dmitry V. Levin" writes: > On Mon, Mar 09, 2020 at 02:02:37PM -0500, Eric W. Biederman wrote: >> Bernd Edlinger writes: >> >> > On 3/9/20 7:36 PM, Eric W. Biederman wrote: >> >> >> >> >> >> Does that sound better? >> >> >> > >> > almost done. >> >> I think this text is finally clean. >> >> exec: Add exec_update_mutex to replace cred_guard_mutex >> >> The cred_guard_mutex is problematic as it is held over possibly >> indefinite waits for userspace. The possilbe indefinite waits for > > -------------------------------------------^^^^^^^^ possible? Yes. Thank you. Fixed. Eric