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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10A34C43334 for ; Mon, 20 Jun 2022 18:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343534AbiFTSjJ (ORCPT ); Mon, 20 Jun 2022 14:39:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244951AbiFTSjG (ORCPT ); Mon, 20 Jun 2022 14:39:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EAF71FA5B for ; Mon, 20 Jun 2022 11:39:05 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 25B0761596 for ; Mon, 20 Jun 2022 18:39:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9837BC341C0; Mon, 20 Jun 2022 18:38:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655750344; bh=vNynxaYqyr2RVDIp9MKcC7hRaMgnO6YGziFW+RsJ+NY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=bRrHV5rO+hTCli7L0NKyTBRHLVURSlVN719clWuqm3nED8Kd7RpX0xqRxY+BWgjOc n6P7cVnWuXHiJGf4N02VGNKjgbG1uL0X/9gAYvbkgIazxMD6k5vLZVshU3BGoHr59m zmsjzukcHQO0Pdc5o/Ei4mQfMAgF19aGZK456vlkGy+5dX/r4syKz1155KSKRGgMXO cnus/FxoPNNIOX4YP6GV1IMh/47vaSL5AFqwZdxLw8Gis6SALSEOtABIMaeVkTZ+fT Ml/83TJSVRgJlsnJCo3pRqngUuAYz5r7Neruv2IPCjIU5f5Gb+nfbsI0bNRDo0QJij uf+YWDI0oRDzw== Date: Mon, 20 Jun 2022 20:38:36 +0200 From: Marek =?UTF-8?B?QmVow7pu?= To: Petr Mladek Cc: Linus Torvalds , John Ogness , Linux Kernel Mailing List , Sergey Senozhatsky , Steven Rostedt , Andy Shevchenko , Rasmus Villemoes , Jan Kara , Peter Zijlstra Subject: Re: [PATCH] printk/console: Enable console kthreads only when there is no boot console left Message-ID: <20220620203836.0f323667@thinkpad> In-Reply-To: References: <20220619204949.50d9154d@thinkpad> <87r13kwawb.fsf@jogness.linutronix.de> <20220620112936.48fcb2a4@thinkpad> X-Mailer: Claws Mail 3.18.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 20 Jun 2022 17:14:27 +0200 Petr Mladek wrote: > The console kthreads uncovered several races in console drivers. > All problems were in situation when a console was being properly > initialized and registered while an early console, using the same > port, was being used. >=20 > These problems are pretty hard to debug because they often result > into silent boot crashes. It would be nice to fix them but it > looks like a can of worms. >=20 > Prevent these problems by delaying the use of console kthreads > after all early consoles are gone. It might later be optimized. > But let's close this can of worms with a big hammer for now > so that they do not break first impression on the kthreads > that solve other real problems. >=20 > Link: https://lore.kernel.org/r/20220619204949.50d9154d@thinkpad > Link: https://lore.kernel.org/r/2a82eae7-a256-f70c-fd82-4e510750906e@sams= ung.com > Reported=3Dby: Marek Beh=C3=BAn > Signed-off-by: Petr Mladek This solves the issue. You have a typo in the reported-by tag ('=3D' instead of '-'). Tested-by: Marek Beh=C3=BAn