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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9225C3815B for ; Mon, 20 Apr 2020 19:45:12 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 843A42074F for ; Mon, 20 Apr 2020 19:45:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 843A42074F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 495cc64J1pzDqPR for ; Tue, 21 Apr 2020 05:45:10 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=suse.de (client-ip=195.135.220.15; helo=mx2.suse.de; envelope-from=msuchanek@suse.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 495cX327HNzDqvx for ; Tue, 21 Apr 2020 05:41:39 +1000 (AEST) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 7FF0AAEAC; Mon, 20 Apr 2020 19:41:33 +0000 (UTC) Date: Mon, 20 Apr 2020 21:41:32 +0200 From: Michal =?iso-8859-1?Q?Such=E1nek?= To: Michael Ellerman Subject: Re: crash in cpuidle_enter_state with 5.7-rc1 Message-ID: <20200420194132.GM25468@kitsune.suse.cz> References: <20200417160348.GE25468@kitsune.suse.cz> <871roiisxg.fsf@mpe.ellerman.id.au> <20200420065030.GL25468@kitsune.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200420065030.GL25468@kitsune.suse.cz> User-Agent: Mutt/1.10.1 (2018-07-13) 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 Mon, Apr 20, 2020 at 08:50:30AM +0200, Michal Suchánek wrote: > Hello, > > On Mon, Apr 20, 2020 at 04:15:39PM +1000, Michael Ellerman wrote: > > Michal Suchánek writes: ... > > > > > > And I've just hit it with your config on a machine here, but the crash > > is different: > That does not look like it. > You don't have this part in the stack trace: > > [ 1.234899] [c000000007597420] [0000000000000000] 0x0 > > [ 1.234908] [c000000007597720] [0000000000000a6d] 0xa6d > > [ 1.234919] [c000000007597a20] [0000000000000000] 0x0 > > [ 1.234931] [c000000007597d20] [0000000000000004] 0x4 > which is somewhat random but at least on such line is always present in > the traces I get. Also I always get crash in cpuidle_enter_state .. > > I'm going to guess it's STRICT_KERNEL_RWX that's at fault. > I can try without that as well. Can't reproduce without STRICT_KERNEL_RWX either. Thanks Michal