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=-8.5 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,USER_IN_DEF_DKIM_WL 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 2703FC04EB8 for ; Wed, 12 Dec 2018 06:09:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C091F20851 for ; Wed, 12 Dec 2018 06:09:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ZAN6fFF/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C091F20851 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.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 S1726502AbeLLGJk (ORCPT ); Wed, 12 Dec 2018 01:09:40 -0500 Received: from mail-it1-f177.google.com ([209.85.166.177]:52908 "EHLO mail-it1-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726298AbeLLGJi (ORCPT ); Wed, 12 Dec 2018 01:09:38 -0500 Received: by mail-it1-f177.google.com with SMTP id g76so7424744itg.2 for ; Tue, 11 Dec 2018 22:09:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=u3uXWDVrOfKgiYz7zcRBdeG5sE+7EtebPSkPoLiSCA4=; b=ZAN6fFF/Lq9dP4phMZ3VETYwcNijoIDVH5EXFwDoxleq5YF0odKTLaZAZxIokoXY9e 9UPD84q1DKGMoF0NPVMZJv5bYzbMOLasodcSEHxlhhTyT9tpFyOpVX2xbDCTNPEJFwE9 RfQvTZ9cEsD1XFk/Ik1/X06Ehf9sfSTflIOOUtEhkw8vAK1wAlUsR9/PCOhx9S3DMIeC fXF5+u9f5GFMY5AUM+cEQ+A/uGSeh+R5R8gg+MIVzZrn0jO4TP9DWw9IWNO2Op7WnWgs fXD8jCrhIZMQRYKcDHpnYXY4tVfsiP2g11sDsqXVGlEnPkVPcfIWPihVVhJEasYRy/lM RbKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=u3uXWDVrOfKgiYz7zcRBdeG5sE+7EtebPSkPoLiSCA4=; b=nSWcNl0G0N7gAAjGKb4Jjk4xhxvh6EEVUgiiIVr0C7v9S7+jqC7D/tH+yURObHvFQm N+JBfbz8haoD79lq7ayfZFAt2ga8jHxdBdMkrbTKSWPRWQmRFFBQc3DNP1u+NuXTdi9T 8bEmnyvBdaWGuA9rbakFCSa+VX+hqm+4nJSC8kCroEG2XHpPCGLRNTTO8LSD8L5FBWAw j8WmpyVP8D7n6lwh4fUme4fKD3T2U7gHRCznlbBXJX4YHBynA8/Ep9/ykkQtzLwKn71O +3yddEiyhBy6WEsFsXB1c0vnsVngchEVvJQviSI05A0bV2Fo43VD/Nc6Gr0PJ/hH8RgO PHsg== X-Gm-Message-State: AA+aEWaDmgu8b4diUJhgbjPSwaoABjmqiNmuPVJ2rlfBoAc/T+mD9Irv F6cxwYWlcal124dikeqT0q9F+qGRs0xNZnYJfOvZ+Q== X-Google-Smtp-Source: AFSGD/WiBee83C2Akz7P9h3UbSqHyxFBjdGgULL2hgRZlc4zuNkD7vQKA9yNWn2H8o/Q2D08tWd7tU+aAiGI9Lu6oRY= X-Received: by 2002:a24:fd09:: with SMTP id m9mr4874259ith.81.1544594977360; Tue, 11 Dec 2018 22:09:37 -0800 (PST) MIME-Version: 1.0 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> <20181212060616.GH431@jagdpanzerIV> In-Reply-To: <20181212060616.GH431@jagdpanzerIV> From: Daniel Wang Date: Tue, 11 Dec 2018 22:09:24 -0800 Message-ID: Subject: Re: [PATCHv3] panic: avoid deadlocks in re-entrant console drivers To: Sergey Senozhatsky Cc: 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 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000f6b8e1057ccd0aee" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --000000000000f6b8e1057ccd0aee Content-Type: text/plain; charset="UTF-8" Got it. Thank you. On Tue, Dec 11, 2018 at 10:06 PM Sergey Senozhatsky wrote: > > 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 -- Best, Daniel --000000000000f6b8e1057ccd0aee Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIS7QYJKoZIhvcNAQcCoIIS3jCCEtoCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg ghBTMIIEXDCCA0SgAwIBAgIOSBtqDm4P/739RPqw/wcwDQYJKoZIhvcNAQELBQAwZDELMAkGA1UE BhMCQkUxGTAXBgNVBAoTEEdsb2JhbFNpZ24gbnYtc2ExOjA4BgNVBAMTMUdsb2JhbFNpZ24gUGVy c29uYWxTaWduIFBhcnRuZXJzIENBIC0gU0hBMjU2IC0gRzIwHhcNMTYwNjE1MDAwMDAwWhcNMjEw NjE1MDAwMDAwWjBMMQswCQYDVQQGEwJCRTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEiMCAG A1UEAxMZR2xvYmFsU2lnbiBIViBTL01JTUUgQ0EgMTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC AQoCggEBALR23lKtjlZW/17kthzYcMHHKFgywfc4vLIjfq42NmMWbXkNUabIgS8KX4PnIFsTlD6F GO2fqnsTygvYPFBSMX4OCFtJXoikP2CQlEvO7WooyE94tqmqD+w0YtyP2IB5j4KvOIeNv1Gbnnes BIUWLFxs1ERvYDhmk+OrvW7Vd8ZfpRJj71Rb+QQsUpkyTySaqALXnyztTDp1L5d1bABJN/bJbEU3 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