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=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 38A0CC433E1 for ; Tue, 21 Jul 2020 02:03:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 189AF2075B for ; Tue, 21 Jul 2020 02:03:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JjqloN85" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728452AbgGUCD2 (ORCPT ); Mon, 20 Jul 2020 22:03:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbgGUCD2 (ORCPT ); Mon, 20 Jul 2020 22:03:28 -0400 Received: from mail-pj1-x1041.google.com (mail-pj1-x1041.google.com [IPv6:2607:f8b0:4864:20::1041]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55E4AC061794; Mon, 20 Jul 2020 19:03:26 -0700 (PDT) Received: by mail-pj1-x1041.google.com with SMTP id f16so876655pjt.0; Mon, 20 Jul 2020 19:03:26 -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; bh=5zlqxk9gLp6ihdSA1axrBIi1VVR4iiTsXABAYWkWZw0=; b=JjqloN85m13o6bcrMquLDGfRm4q6D/KdMQmr6Oy2AVNJTiNWB0bVDV60jZSO3Qbg5m SG22LWBx+aOcEQSt4/++mdhCkiXAs4rgR6Qew6oGTQu98n8nPCDLjhYSWw3rnzPNeD37 dCwAnVpDV/EiDBQcS+AxmwIcRR31jHj1Topy8TbBia1vIKIfsG2fX74Fr37mP67mROI8 vZdAq/KH2toR/jVrhlAqtGzA2b4yaKRdqfWItDyPIv94ItSHAgRIMXS2dxueaIld99qq bKNOa6V1edswy2ttLqXTxozC/3OcfoQ+6+EHJkyJSZkxEqP+yKqZfjdNPZOmfi53s3uA Z/ug== 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; bh=5zlqxk9gLp6ihdSA1axrBIi1VVR4iiTsXABAYWkWZw0=; b=Th8yMqUJaHJ8A9fMa8FaTbDtUDuE0JA0G8uJ39FZGxUduQzePScNCbg/k0p2xBRIIr p3UjGyPyArd+nP0sWyM9U9Sy0KJcrTmrvyDyPglEDyZxhcZzDvLWZwRJARNue48MsriM vwPwUQB3mHgxYXYEqgwfdnr2RLDkxWmjnUQPV1Dag0lRH7Daw35uDDAm1GvLJsW/+rVi /PU5mrohHrmd8/fILrkxLI2e8DFSGmh5RwxLqghaZJ2xs8vJFXfvFAdcc5ictq14j+S5 tneww3r04wc0t9YguLo7tfgoK8U0S5OlDGM8Qf6HrjcV6JXQyqi8VtCIXOxPW0VneL1B 7QPA== X-Gm-Message-State: AOAM530NfZbz2qald19HRUIOyFnkz0L7sMPzdyKsSWD3tlRoGQbJy1Xd rMMEwPdtfQutpkFvlEAFLSM= X-Google-Smtp-Source: ABdhPJx9lso+A8gYOduhg+msXjHtKgUUqoS+LbbMecZsJfkCyJzdXNMZ6HZug06xHUnjnW06RhF9Hg== X-Received: by 2002:a17:90a:8545:: with SMTP id a5mr2239412pjw.35.1595297005907; Mon, 20 Jul 2020 19:03:25 -0700 (PDT) Received: from localhost ([2409:10:2e40:5100:6e29:95ff:fe2d:8f34]) by smtp.gmail.com with ESMTPSA id g19sm18108556pfb.152.2020.07.20.19.03.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2020 19:03:24 -0700 (PDT) Date: Tue, 21 Jul 2020 11:03:22 +0900 From: Sergey Senozhatsky To: Pavel Machek Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Lech Perczak , Sergey Senozhatsky , Jann Horn , Petr Mladek , Theodore Tso , John Ogness , Linus Torvalds Subject: Re: [PATCH 4.19 130/133] printk: queue wake_up_klogd irq_work only if per-CPU areas are ready Message-ID: <20200721020322.GA715296@jagdpanzerIV.localdomain> References: <20200720152803.732195882@linuxfoundation.org> <20200720152810.011879475@linuxfoundation.org> <20200720220506.GB11552@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200720220506.GB11552@amd> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (20/07/21 00:05), Pavel Machek wrote: > > From: Sergey Senozhatsky > > > > commit ab6f762f0f53162d41497708b33c9a3236d3609e upstream. > > [..] > > Is this still needed in 4.19? 1b710b1b10ef was reverted in 4.19, so > there should not be any user-visible problems... printk_deferred() is still broken and we had similar bug reports which where not caused by 1b710b1b10ef -ss