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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83F22C433FE for ; Wed, 5 Oct 2022 11:13:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E11476B0073; Wed, 5 Oct 2022 07:13:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DC0A76B0074; Wed, 5 Oct 2022 07:13:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C881B8E0001; Wed, 5 Oct 2022 07:13:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id B92EC6B0073 for ; Wed, 5 Oct 2022 07:13:45 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 90076A0B96 for ; Wed, 5 Oct 2022 11:13:45 +0000 (UTC) X-FDA: 79986635610.20.9B319F0 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by imf03.hostedemail.com (Postfix) with ESMTP id BCD702000F for ; Wed, 5 Oct 2022 11:13:42 +0000 (UTC) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4MjBlR6ZKrz4xGd; Wed, 5 Oct 2022 22:13:39 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1664968420; bh=9HmsuI6bN6wZ0OmFrg/5trofe++PshYJIEAHR8fCgZc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=oQR5HYB7QRlnc4kszi7gr/iQtJdEgryI8YUjeBqWlCZBpOvcMVvmCc+rfYL7dGWkj dfR3MT2InRSmaLFJHvABjeSJqqrJgyaHOYTtUyi9EZoDN6b/k2MTKXWST46yHtdaSN E8V0GCbPZ+DvQtaiyvvUaNFSUYGkLOLptHXvTBN39HN3wQ2iiHxWLN/BcpGjmRFja6 JvoFE1GhsAuH/wzYVfCSYOxo7f9H+ve2OmXAuSFFJxUxDuRSRBEljXzTMlory3KmKc Gqzln2dVT42SqEfcmUtjMATNh5ySD9N9H6XFUqlQcf32Fb3A4I8GwZ7Q9SBHxpziZX IlK/ThR/PX6lQ== From: Michael Ellerman To: Matthew Wilcox Cc: Zorro Lang , linux-mm@kvack.org, linux-ext4@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [Bug report] BUG: Kernel NULL pointer dereference at 0x00000069, filemap_release_folio+0x88/0xb0 In-Reply-To: References: <20220927011720.7jmugevxc7ax26qw@zlang-mailbox> <87wn9lei2x.fsf@mpe.ellerman.id.au> Date: Wed, 05 Oct 2022 22:13:35 +1100 Message-ID: <87bkqqplpc.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664968423; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=9HmsuI6bN6wZ0OmFrg/5trofe++PshYJIEAHR8fCgZc=; b=3N6JKrPkYytHrCizNRW1mh9YXcgVe30b8GKLPKDjONuXr54vf4YNBaiIGrIRNV4h/vkHgZ eAge79yOkNJ7/7U6rf0OsULD5Ak8blKua4H7tDrPijEx8Bw/tyzEg2ZkYZFzdoXmCc6e6S GRUArBtA4fIXdvYxB836tMygmG22rI8= ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=pass header.d=ellerman.id.au header.s=201909 header.b=oQR5HYB7; spf=pass (imf03.hostedemail.com: domain of mpe@ellerman.id.au designates 150.107.74.76 as permitted sender) smtp.mailfrom=mpe@ellerman.id.au; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1664968423; a=rsa-sha256; cv=none; b=O261Ih0u/MgMuZQWllMPBju0MkOd145jNGpe6IY4N/z+q4GYBHAQPQQx9CLdCIqOTtcxdq Jw8mbSF66G9k3xOHsiAsZfQ5kX4hZ+nB1VdWXiBvSlHITv0FG8ztd+9/bky2isZ2Z78Gft WvuudthJ0aH3NyOMbLXSNPeTk0QrbJs= X-Rspam-User: Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=ellerman.id.au header.s=201909 header.b=oQR5HYB7; spf=pass (imf03.hostedemail.com: domain of mpe@ellerman.id.au designates 150.107.74.76 as permitted sender) smtp.mailfrom=mpe@ellerman.id.au; dmarc=none X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: BCD702000F X-Stat-Signature: wawxkhh5p6p7hh9w1uwswuemi6368mib X-HE-Tag: 1664968422-374309 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Matthew Wilcox writes: > On Fri, Sep 30, 2022 at 12:01:26PM +1000, Michael Ellerman wrote: >> Matthew Wilcox writes: >> >> [ 4681.238745] Instruction dump: >> >> [ 4681.238749] fbc1fff0 f821ffc1 7c7d1b78 7c9c2378 ebc30028 7fdff378 48000018 60000000 >> >> [ 4681.238765] 60000000 ebff0008 7c3ef840 41820048 <815f0060> e93f0000 5529077c 7d295378 >> > >> > Running that through scripts/decodecode (with some minor hacks .. how >> > do PPC people do this properly?) >> >> We've just always used our own scripts. Mine is here: https://github.com/mpe/misc-scripts/blob/master/ppc/ppc-disasm >> >> I've added an issue to our tracker for us to get scripts/decodecode >> working on our oopses (eventually). > > Would you be open to changing your oops printer to do > s/Instruction dump/Code/ ? That would make it work without any other > changes. Yeah, we're the only arch that uses "Instruction dump". For userspace instructions we already print "code". I'll send a patch switching to "Code:". cheers