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 CA8A6C43334 for ; Sun, 19 Jun 2022 18:51:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231627AbiFSSvW (ORCPT ); Sun, 19 Jun 2022 14:51:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237074AbiFSSuD (ORCPT ); Sun, 19 Jun 2022 14:50:03 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4AF1CA194 for ; Sun, 19 Jun 2022 11:50:02 -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 0120561229 for ; Sun, 19 Jun 2022 18:50:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E208DC34114; Sun, 19 Jun 2022 18:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655664600; bh=TrohUoOwcycRrk8GE4fb0hnksqJfGDb/F/dRryb/8EM=; h=Date:From:To:Subject:From; b=WD3hoTkOr3+nS+0kLiXrSeSu5pJSluz8lbSk/A0qMQwzF8ieL2qK1Cwq8M6fOJA+V +x2QLp//dTeZ592fothOi9/Q8vs/USUDlH9dTUVSmTJjv35PuEbgHL2FNDxOfTL8+9 EoIiQJXMT0UpBnmYQgGvh1hXc6L1ia/7Bcvu1ZWQ8cTayZ3JBCltr5KWwQlDx6Bui9 TJAWMHxgwTvONCbP/8QMwghkuI+mTGgNgHXfkuDeRhaHiKMn6sMeF4CkEOy3yyy8t9 Zdhlir0tbaWiB6GJH7UPvF9ADl3mFl7IaxWugruOQ7Ai4CSPCe7ML+p1UdDG8KgiT3 aSyil1zz6Sc+A== Date: Sun, 19 Jun 2022 20:49:49 +0200 From: Marek =?UTF-8?B?QmVow7pu?= To: John Ogness , Petr Mladek , Linus Torvalds , linux-kernel@vger.kernel.org Subject: Boot stall regression from "printk for 5.19" merge Message-ID: <20220619204949.50d9154d@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=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Linus, Petr, John, 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). The stall example: ... [ 1.108141] io scheduler mq-deadline registered [ 1.108143] io scheduler kyber registered [ 1.163484] armada-ap806-pinctrl f06f4000.system-controller:pinctrl: registered pinctrl driver [ Or another: ... [ 1.108155] io scheduler mq-deadline registered [ 1.108156] io scheduler kyber registered [ 1.162991] armada-ap806-pinctrl f06f4000.system-controller:pinctrl: registered pinctrl driver [ 1.163361] armada-cp110-pinctrl f2440000.system-controller:pinctrl: registered pinctrl driver [ 1.180827] mv_xor_v2 f0400000.xor: Marvell Version 2 XOR driver [ The garbage example: ... [ 0.920951] raid6: using neon recovery algorithm [ 0.921228] iommu: Default domain type: Translated % gb@k+cFL/[ 4.954974] DSA: tree 0 setup [ 4.955286] cfg80211: Loading compiled-in X.509 certificates for regulatory database I did not have time to look at the contents of the commit yet to try to fix it myself, and won't have time for another two weeks. But I thought I should let you know now. Marek