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 DAC88C433EF for ; Sun, 19 Jun 2022 22:23:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231997AbiFSWXg (ORCPT ); Sun, 19 Jun 2022 18:23:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232006AbiFSWXV (ORCPT ); Sun, 19 Jun 2022 18:23:21 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C2A465C0 for ; Sun, 19 Jun 2022 15:23:20 -0700 (PDT) From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1655677396; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NwAUCtokRVgUgKEqVYDGl9QxhfxKi5oYdysOze3R9q8=; b=yfjwricVa6zmJkKVw7QNv0bp0p61zENcNZAKh5SmN6/kBA1viyqaRtRdV6yBRb+cG4oqga CF5XZxTHC4kP4U2zfmu/iJgQeZUaM8966fBXV2olEiwSA84S5SZEouchS3QHK77CZgQA3q R74pjf8oO33QHtiMNV24Eo6WosHhn4+6L/2K/pxn4hfzHKxv9HInDMXW+2uS/oUPc4qmyd hJfvr4FjoBk5lbI6wz5MHhLGMN6dQq7hODL3iZX2Hn0GH/UYMI+LpITFEcwPIIgfyyeGYc j76cAdKjW2oj4LKRMJzhNbQFuwS2ycVEkRROSzLsN8Xq8MQJvhYwWaeaH8Sjog== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1655677396; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NwAUCtokRVgUgKEqVYDGl9QxhfxKi5oYdysOze3R9q8=; b=/3ichqUf3U3dE8VDmiD1Y833MmXcCxePZZHppaqzAdSpyLVLrZOkGweOoWVr+fSpIXDtNV MqsnKCJ76EYcJFDg== To: Marek =?utf-8?Q?Beh=C3=BAn?= , Petr Mladek , Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: Boot stall regression from "printk for 5.19" merge In-Reply-To: <20220619204949.50d9154d@thinkpad> References: <20220619204949.50d9154d@thinkpad> Date: Mon, 20 Jun 2022 00:29:16 +0206 Message-ID: <87r13kwawb.fsf@jogness.linutronix.de> 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 Hi Marek, On 2022-06-19, Marek Beh=C3=BAn wrote: > the series > https://lore.kernel.org/linux-kernel/YouKQw72H7y9EJQK@alley/ > merged by commit 537e62c865dc ("Merge tag 'printk-for-5.19' of > git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux") > > and in particular the commit 09c5ba0aa2fc ("printk: add kthread console > printers") > > causes a regression on arm64 (Marvell CN9130-CRB board) where the > system boot freezes in most cases (and is unusable until restarted by > watchdog), or, in some cases boots, but the console output gets mangled > for a while (the serial console spits garbage characters). Could you provide your kernel config and a complete kernel boot log (at least as much as you get)? I would like to investigate the serial driver. What you are describing sounds more like a serial bug. The kthread console series has already uncovered serial driver bugs in multiple drivers. Thanks for reporting this. John Ogness