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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,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 D395BC04EB8 for ; Wed, 12 Dec 2018 06:06:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 91DAC20851 for ; Wed, 12 Dec 2018 06:06:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CDaAZhxO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 91DAC20851 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 S1726459AbeLLGGW (ORCPT ); Wed, 12 Dec 2018 01:06:22 -0500 Received: from mail-pg1-f171.google.com ([209.85.215.171]:42590 "EHLO mail-pg1-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726237AbeLLGGW (ORCPT ); Wed, 12 Dec 2018 01:06:22 -0500 Received: by mail-pg1-f171.google.com with SMTP id d72so7821461pga.9; Tue, 11 Dec 2018 22:06:21 -0800 (PST) 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=x6tN0yT304LL38AhQvcgGoUROWlm9Cb4VIxs4JaTZs8=; b=CDaAZhxOShwynVkJF2fI1tw0s+ZvArVrBUJCzNTsFWFBM7//PwCE/g2vCgKOt660h3 ase66W6M5dZhtZligIrm0QsQIm/0KAVWERFSbKG3EhPG8SyoNsxJkKnzFO/v83laoz7k b+4pl/s/hmx4z74l2G8kFpWyikpW4fHWs5i6xoVxQGW94lMJ+StcjzX3ZWC3WwV7XzP/ yU12h6Y2v5GljBQ3v/TI92WkynXho+sUmHHBNFGWeEUnOkllsAxA54ihgog7kWKPx7hL szmJzOhZxNcbNHp1oTHkgQGSKkM0GoAcBfzXhHVqF656pWpcAE8w5kStldqhjysAxI8p 5AZw== 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=x6tN0yT304LL38AhQvcgGoUROWlm9Cb4VIxs4JaTZs8=; b=KGZkIoii3P8ZA/FXnT952PJTDN62hk7q9DYWUV4pvNCyqZ/PZ8Y3wd5rAzEovQEhCN dkianCNbjK+xQhHg2rdBy8vLna7kPFatKFnwkz8xQjeF6xKJjem5k1iaVOnkOlfWxnY9 9XNObMjI9ah93t9pmSgWaOobkmpEwkw6DkM1XSGENFX3BlfYwYbZ7i+5mj39MjpFbjKM bncQls8Pu7ylbU2ffGxis32HFFW3cGBwNkCgz72HPRy0Z3NKDHWuqeFGfxy0e58W/oqn 8WAfbtHCSeAASlGWbjJeADyMINUjrsYcazyrc1TcXHhXDCabKSTWKu5ghQlxIUWh+HgX zMnw== X-Gm-Message-State: AA+aEWZl24JxaqrbF0sQt7XTVqPA2OrzbteBena2MOBGCuzIRCMmkSpI Qy0JTck1Red+lt+c/2fWg6Y= X-Google-Smtp-Source: AFSGD/WkEbxeep96PPY87C4h7M5wRqqWaNnG+n2mXG4WCxMQTnOgiFK2HSpkwV8xwXVyxumYR6zeTw== X-Received: by 2002:a63:fb46:: with SMTP id w6mr17390683pgj.321.1544594781313; Tue, 11 Dec 2018 22:06:21 -0800 (PST) Received: from localhost ([211.246.69.141]) by smtp.gmail.com with ESMTPSA id a18sm21406287pgj.30.2018.12.11.22.06.19 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 11 Dec 2018 22:06:19 -0800 (PST) Date: Wed, 12 Dec 2018 15:06:16 +0900 From: Sergey Senozhatsky To: Daniel Wang Cc: Sergey Senozhatsky , Petr Mladek , linux-kernel@vger.kernel.org, Steven Rostedt , 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: <20181212060616.GH431@jagdpanzerIV> References: <20181016050428.17966-2-sergey.senozhatsky@gmail.com> <20181025101036.6823-1-sergey.senozhatsky@gmail.com> <20181031122736.epbxu424l3xagge5@pathway.suse.cz> <20181101014821.GB502@jagdpanzerIV> <20181101080808.n73lrlnjd65nk4qf@pathway.suse.cz> <20181122131202.nkcurdt5k6jrhowa@pathway.suse.cz> <20181212052308.GG431@jagdpanzerIV> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (12/11/18 21:59), Daniel Wang wrote: > No worries. I will follow up. You would recommend that all four > patches in this set to be backported though, right? Just the last one, which makes consoles re-entrant panic: avoid deadlocks in re-entrant console drivers Because only this one was applied so far. The reset got stuck. -ss