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 CB1FAC43334 for ; Mon, 25 Jul 2022 13:26:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235545AbiGYN0s (ORCPT ); Mon, 25 Jul 2022 09:26:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235546AbiGYN0q (ORCPT ); Mon, 25 Jul 2022 09:26:46 -0400 Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9A38624F for ; Mon, 25 Jul 2022 06:26:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1658755593; bh=Fi3qy6ElAhIaJDSzvLZdGZtuRvMetLj0T6KmNKAlxLM=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=a/oBKENeCxDjtdnxXRAE0/j2xwbMPj/l2qv8NnzwuXfPGpzw+0q9P2a5o4zOdTQAz 7Lg2wiFqnhlPM1IVyigFM+6/IBxBSNyRuaJ7wHUXchShuUuIkf2vBTdx3Y0CUvWusd rlejNb6aXwY5mZWcaUVE/C5dkx08hKqJqRHGBaL4= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.221.149.139]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MNbox-1nrXMo0Qvb-00P7tW; Mon, 25 Jul 2022 15:26:33 +0200 Message-ID: <2d55bcc3544f349bbdd30908d3a9c04e56dbf718.camel@gmx.de> Subject: Re: v5.19-rc2-rt3: nouveau might sleep splat From: Mike Galbraith To: John Ogness , Sebastian Andrzej Siewior Cc: RT , Petr Mladek Date: Mon, 25 Jul 2022 15:26:32 +0200 In-Reply-To: <87h735ikdh.fsf@jogness.linutronix.de> References: <01e0c6949e6f0611954016552da8f0795b20600a.camel@gmx.de> <87wnd616ds.fsf@jogness.linutronix.de> <87tu8a16bm.fsf@jogness.linutronix.de> <87h735ikdh.fsf@jogness.linutronix.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:TTiKmN9s4IZK7euqD6S2VIhwZkEkNw+XqAuANtcJQNy2Xq5dThq fiootJI+tynOs4qhNFebgPqfmlgje2cxXiTAlJWaPW6RlSXZlkltYlViQKt3vSR35kEE0LI Q5ZQpCCtmF0hLhpw1+I6vQ9CoymDfFvu0Rmk+sdVJK3oMPs0K1bQX24v7iVEd2YDPcNQ8J2 hp6f6UwaiPa6ZWemEY3WA== X-UI-Out-Filterresults: notjunk:1;V03:K0:7wVxtvgBCkI=:UZw1avi1glyx7lAU6bMIci FKh+2Jkacfg587CfuvHmQjnCbkZZGdn1W3gQmY2qS5/WjwCF9+4THvfHEzcaPnUnt8MmRZKkR vzb/Da9b0HCQl1n8iYO3zarRNX2LkHaBFCQSySPH2KaHsb5j50YP3nppyYWSnWEwRFLRFtg17 yfRrdx7DHnMROXu6CUgQJUAR5ByMBolfimTOVPoJ1wllAWrv+cUa7821EwxoCR8Z989ItZh77 DK/EHXLdEevEU5MaG39GjlbWARJ7WKEBuc7MgC85UsXshxKdOqtPNAJoWi63azPDd4bWdZMS/ jVUJyvaU1eoS9aQICeC1EvELOOFdHyKjAyAc5BcrVW+SifZ64bP5p7fJmEOwDvI+hWjmNLSla Hxa2Ce485nEAubPrmi9Lb6nAEvlF6OLqs6rrc5SDJceiqzuu296EBdqm1GJWbKf68Ez5F8tFp uVTVzqe6dfCFJMMapkf8BtAL/OhsEspi6Rcs5UjNLSDikc2lSr8RGwA1CtXD94yziEG+ZIBrq WB+Vd3QdkeU941pvyPZRNCbGcXfVnlDu9Vkzw0yUHbp9Idp3Vbo7quAmo1pDrqOo+kk1YLEM/ HTdx/1K/SkLsl3G4dasnmuQtbI+rcUHJDv3UPErXv40AH3DwKOFSOIo2NZGwN40CGn51HBLR4 yMklG8P7OMG0avdnBl23ZOiK2S7IeO9GdW+cOaM1joMLov+3t24EbQ8abVq3Kb8FGxb/SUpOK P39G5EYtjlq9gpPlztMDt0aBey4kgmUuIVj/FFumsQ8QCwNnF+H68fhgklJEOP1Fwgsfd24pM CgtPGwTlLRfbTDvCZp+u/bzxiQp4zlJkeffxPQtHEMyw5P0XyDPqbb5kTrpR2CMjyzq505+Y5 z4oXN84Fm9AkfU3kI5uHT30iqujjF2nqkJz2jQd/2yIii2ga+TsOvpBy7ZCebEbU6TcG9ZKoy 22NEZOFE42mmi9awESedhgQpc1Kj3UsDybU0aHMEKuqWRbbsH0nF/erWj+GKPKD0vm8HshSHL sDXWosIKpjhSHljcaAsYYs0PyzfPLlGcB9OtA1OeOhvZTJu8leWWhOAcjASZrVU98kXJ8x/z1 YPWTZmMckNWlyUyu8fPDCoCuvjrPYzVwdeuerDZsJU7rGRq43b0Dkw9VA== Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org On Mon, 2022-07-25 at 12:04 +0206, John Ogness wrote: > I suppose this patch side-steps the splat because the first > vsnprintf() already triggered the random bytes for the pointer > hash. Yeah, sounds right. > I am preparing a new series that addresses this by completely removing > interrupt disabling from the printk() path. This required changes to the > printk_enter() macro, recursion handling, and the printk-ringbuffer > itself. > > The focus of my new series are the various non-RT issues reported during > the early 5.19-rc cycles. I still need more time to get the series into > shape for LKML. > > If Mike's patch is reliably side-stepping the issue, feel free to take > it. It does, but I'm in no rush... and it is a bandaid :) -Mike