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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 80715C63793 for ; Thu, 22 Jul 2021 09:02:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 694BD613AA for ; Thu, 22 Jul 2021 09:02:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231272AbhGVIVz (ORCPT ); Thu, 22 Jul 2021 04:21:55 -0400 Received: from mail-out.m-online.net ([212.18.0.10]:50991 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230330AbhGVIVr (ORCPT ); Thu, 22 Jul 2021 04:21:47 -0400 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4GVmfr5TrWz1sGKb; Thu, 22 Jul 2021 11:02:12 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4GVmfr45ZJz1qqkg; Thu, 22 Jul 2021 11:02:12 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id B3xsr2CvvLrS; Thu, 22 Jul 2021 11:02:11 +0200 (CEST) X-Auth-Info: 5K2eEbDaqyAfIeaYUxnfMTLK7qDLkZsfKwuZYZ+up/2N3WzIN6C1Edq5vLWLBZlv Received: from igel.home (ppp-46-244-188-81.dynamic.mnet-online.de [46.244.188.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Thu, 22 Jul 2021 11:02:11 +0200 (CEST) Received: by igel.home (Postfix, from userid 1000) id D0B2C2C2647; Thu, 22 Jul 2021 11:02:10 +0200 (CEST) From: Andreas Schwab To: Palmer Dabbelt Cc: tongtiangen@huawei.com, jszhang3@mail.ustc.edu.cn, Paul Walmsley , aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH -next v2] riscv: add VMAP_STACK overflow detection References: X-Yow: Yow!! "Janitor trapped in sewer uses ESP to find decayed burger"!! Date: Thu, 22 Jul 2021 11:02:10 +0200 In-Reply-To: (Palmer Dabbelt's message of "Wed, 21 Jul 2021 23:12:20 -0700 (PDT)") Message-ID: <87k0lizppp.fsf@igel.home> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Jul 21 2021, Palmer Dabbelt wrote: > On Mon, 19 Jul 2021 00:23:06 PDT (-0700), schwab@linux-m68k.org wrote: >> On Jul 19 2021, tongtiangen wrote: >> >>> On 2021/7/17 14:55, Andreas Schwab wrote: >>>> Please use >>>> https://download.opensuse.org/repositories/home:/Andreas_Schwab:/riscv:/jeos/images/openSUSE-Tumbleweed-RISC-V-JeOS-efi.riscv64.raw.xz >>>> and run it in qemu with u-boot as kernel. >>>> >>>> Andreas. >>>> >>> >>> Hi andreas: >>> I used today's latest mainline code and .config provided by you, and I >>> can't reproduce this panic. >> >> Did you test it like I said above? >> >> Andreas. > > I'm getting this on and off, with just > CONFIG_VMAP_STACK=y > > on top of defconfig, when running on QEMU. It's not showing up right now: > I'd thought it was an issue with that initrd patch, but it went away when > I re-ran the tests so I'm guessing it's something non-deterministic. I'll > try to take a look if it comes back. The crash happens reliably with the image above. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."