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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 51DDDC433F5 for ; Sun, 12 Dec 2021 11:22:26 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4JBj0c5Wytz3cYC for ; Sun, 12 Dec 2021 22:22:24 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=srs.iliad.fr (client-ip=212.27.33.1; helo=ns.iliad.fr; envelope-from=srs0=hfvnxh=q5=freebox.fr=mbizon@srs.iliad.fr; receiver=) Received: from ns.iliad.fr (ns.iliad.fr [212.27.33.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4JBj094LBfz2ygB for ; Sun, 12 Dec 2021 22:21:57 +1100 (AEDT) Received: from ns.iliad.fr (localhost [127.0.0.1]) by ns.iliad.fr (Postfix) with ESMTP id D51F11FFD9; Sun, 12 Dec 2021 12:21:53 +0100 (CET) Received: from sakura (freebox.vlq16.iliad.fr [213.36.7.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ns.iliad.fr (Postfix) with ESMTPS id C7FEA1FFBD; Sun, 12 Dec 2021 12:21:53 +0100 (CET) Date: Sun, 12 Dec 2021 12:21:52 +0100 From: Maxime Bizon To: Christophe Leroy Subject: Re: Fail to boot 5.15 on mpc8347 with either debug_pagealloc or nobats Message-ID: <20211212112152.GA27070@sakura> References: <20211205214408.GC29658@sakura> <854e7a5f-2b1b-47de-51fb-6cd0f3c6ccd3@csgroup.eu> <06827bee-8f58-daae-3098-64cb08e090de@csgroup.eu> <69b0ffeb98a641c74f3beccf9dfc752bef96c51b.camel@freebox.fr> <3f99df92-0c3e-70cc-623b-7ebd6eca1e55@csgroup.eu> <56402c2e-fe02-e697-7856-80830ea56e66@csgroup.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <56402c2e-fe02-e697-7856-80830ea56e66@csgroup.eu> User-Agent: Mutt/1.9.4 (2018-02-28) X-Virus-Scanned: ClamAV using ClamSMTP ; ns.iliad.fr ; Sun Dec 12 12:21:53 2021 +0100 (CET) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linuxppc-dev@lists.ozlabs.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tuesday 07 Dec 2021 à 07:11:40 (+0100), Christophe Leroy wrote: Hello Christophe, With all your recent patches, I was able to boot a kernel with every CONFIG_DEBUG enabled. After modprobing an empty module (probe just return 0), I get this new one: [ 15.351649] BUG: spinlock recursion on CPU#0, kworker/0:2/217 [ 15.357540] lock: init_mm+0x3c/0x420, .magic: dead4ead, .owner: kworker/0:2/217, .owner_cpu: 0 [ 15.366563] CPU: 0 PID: 217 Comm: kworker/0:2 Not tainted 5.15.0+ #523 [ 15.373350] Workqueue: events do_free_init [ 15.377615] Call Trace: [ 15.380232] [e4105ac0] [800946a4] do_raw_spin_lock+0xf8/0x120 (unreliable) [ 15.387340] [e4105ae0] [8001f4ec] change_page_attr+0x40/0x1d4 [ 15.393413] [e4105b10] [801424e0] __apply_to_page_range+0x164/0x310 [ 15.400009] [e4105b60] [80169620] free_pcp_prepare+0x1e4/0x4a0 [ 15.406045] [e4105ba0] [8016c5a0] free_unref_page+0x40/0x2b8 [ 15.411979] [e4105be0] [8018724c] kasan_depopulate_vmalloc_pte+0x6c/0x94 [ 15.418989] [e4105c00] [801424e0] __apply_to_page_range+0x164/0x310 [ 15.425451] [e4105c50] [80187834] kasan_release_vmalloc+0xbc/0x134 [ 15.431898] [e4105c70] [8015f7a8] __purge_vmap_area_lazy+0x4e4/0xdd8 [ 15.438560] [e4105d30] [80160d10] _vm_unmap_aliases.part.0+0x17c/0x24c [ 15.445283] [e4105d60] [801642d0] __vunmap+0x2f0/0x5c8 [ 15.450684] [e4105db0] [800e32d0] do_free_init+0x68/0x94 [ 15.456181] [e4105dd0] [8005d094] process_one_work+0x4bc/0x7b8 [ 15.462283] [e4105e90] [8005d614] worker_thread+0x284/0x6e8 [ 15.468227] [e4105f00] [8006aaec] kthread+0x1f0/0x210 [ 15.473489] [e4105f40] [80017148] ret_from_kernel_thread+0x14/0x1c -- Maxime