From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B59ABC0044C for ; Thu, 1 Nov 2018 01:48:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5FE1820823 for ; Thu, 1 Nov 2018 01:48:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cSv/oU5R" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5FE1820823 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727502AbeKAKtP (ORCPT ); Thu, 1 Nov 2018 06:49:15 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:46397 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725978AbeKAKtP (ORCPT ); Thu, 1 Nov 2018 06:49:15 -0400 Received: by mail-pf1-f193.google.com with SMTP id r64-v6so8495913pfb.13; Wed, 31 Oct 2018 18:48:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=R4QznA1zNb8qlU5c1UoOjZCoeSLsyaRSx0Z0DXKT61o=; b=cSv/oU5RvQzwpYFLi1nXxNJrrII1B1J3Ck5eRfLyYiuK0oEqSMbpx+rr35zkweyToE /q73iFq0NaZjWFoNL8/aXmAeDwZ1wumZYsVn0ZWCb3EI/yWOLRm4fwNy+RaTbUUhQQlg kvf85pxuabaQ4OdEVOnZ3gbr90JTkS9XVH2w1LevnX4io3JpfKypqWUA4wA+dNrFUhgM DH3/uu34FRxcnfMw5RrzqGFx60a10GUM27s+wO3h86Zd19uiGy/QjDhygYVXHrbNaNvB IIjI7CBveYnik9KP7h9JOz7CAN5cbhZWiW6ASBlH4IOoD0jYr3mrg0dHr1zLpL1WuJit 315A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=R4QznA1zNb8qlU5c1UoOjZCoeSLsyaRSx0Z0DXKT61o=; b=pG9s6XXyXfyBH8GLAJ4rIB6TzG44aWufbxhDMOwgADdfZaFkIjx13SvFL+jT95nbZg VYU3CNsK5x0XDlO2Eytiqk7i5mMpJ6jXNBVcxrZi7ZVhtJw56jw6tTJavoPI0dAuRhCz apC2miYXkpikef7AFHscy5DiFBe5t7WxmN2h5prn2cgpsVoKjOUuJKqGCaGsD0h4uIVh Pr1PZ6C7ikj0lBkY8eWirjYEtzblcNUB9FR2iBvL5vr4Lqn7b0tfvxjQgm1TTCXklaMD sglU/Cn8l/sDK34GHHkXIZw4ME1ZG0KvA/Creqh1MzRSNA/dwy/lU7zJgFZcaORt0n2v 25gg== X-Gm-Message-State: AGRZ1gK7FIK2CMLRuM79PnlHliU2XisP4SEVXGy9OvWmehD6THTm9zdZ IHh/1x9n0bEHSoV9yrhWtaQ= X-Google-Smtp-Source: AJdET5djex3Tv+5ms7i4RqgnnNiwbVvJXHlndQNKAd5wg4/+H9NIFM87EImP09V015wxaLby7ZUO9w== X-Received: by 2002:a63:6302:: with SMTP id x2mr5366991pgb.183.1541036905942; Wed, 31 Oct 2018 18:48:25 -0700 (PDT) Received: from localhost ([175.223.27.119]) by smtp.gmail.com with ESMTPSA id s8-v6sm2103378pgi.44.2018.10.31.18.48.23 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 31 Oct 2018 18:48:24 -0700 (PDT) Date: Thu, 1 Nov 2018 10:48:21 +0900 From: Sergey Senozhatsky To: Petr Mladek Cc: Sergey Senozhatsky , linux-kernel@vger.kernel.org, Steven Rostedt , Daniel Wang , Peter Zijlstra , Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , Alan Cox , Jiri Slaby , Peter Feiner , linux-serial@vger.kernel.org, Sergey Senozhatsky Subject: Re: [PATCHv3] panic: avoid deadlocks in re-entrant console drivers Message-ID: <20181101014821.GB502@jagdpanzerIV> References: <20181016050428.17966-2-sergey.senozhatsky@gmail.com> <20181025101036.6823-1-sergey.senozhatsky@gmail.com> <20181031122736.epbxu424l3xagge5@pathway.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181031122736.epbxu424l3xagge5@pathway.suse.cz> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (10/31/18 13:27), Petr Mladek wrote: > > > > Signed-off-by: Sergey Senozhatsky > > The patch makes sense to me. The locks should stay busted also for > console_flush_on_panic(). > > With the added #include : > > Reviewed-by: Petr Mladek Thanks! Since there are no objections - how shall we route it? Via printk tree? I'd also prefer this patch to be in -stable, it fixes a real issue after all. -ss