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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 57758C3A589 for ; Thu, 15 Aug 2019 20:29:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1943B2083B for ; Thu, 15 Aug 2019 20:29:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="TZBSwwEe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731979AbfHOU3Y (ORCPT ); Thu, 15 Aug 2019 16:29:24 -0400 Received: from mail-io1-f65.google.com ([209.85.166.65]:36238 "EHLO mail-io1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726865AbfHOU3X (ORCPT ); Thu, 15 Aug 2019 16:29:23 -0400 Received: by mail-io1-f65.google.com with SMTP id o9so1807167iom.3 for ; Thu, 15 Aug 2019 13:29:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=date:from:to:cc:subject:in-reply-to:message-id:references :user-agent:mime-version; bh=3zMGQrUE3EUacLldQeVzqh4LwSGfvpMr8mJRvzACSDc=; b=TZBSwwEezcawSVNZH+A75BHDYHt86Jp1ExhFT8vaEmeCOK7nQuGV9QJVPPazwk/Ku6 G7uOzEdiWUPRJBvVSImVcHfmRHeEjWKF3+fPNsIjKMjC090ZeES3WGG91W+PlTkpl1Uh BSFxoOQGBx4Z/oJpHzZwV2sTbbXxw438FlpApwHNeYdijWj6kwo87ikWEYNaDOvUTg5q p2ajq2dV+MDAVl57UdoSW23sadBfejXtoomIIw3UFpjl0q7xrdzDiyLZFAH6InH8raNy F5Nnj5CYwT+7toN4+Ot/KPImSYK040afUlaSsBZPUfgqAaKarIaYbJQwhByjQ6fALu8I nPbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:in-reply-to:message-id :references:user-agent:mime-version; bh=3zMGQrUE3EUacLldQeVzqh4LwSGfvpMr8mJRvzACSDc=; b=tf4EG7fbNUWqJVxZcvsC8VyOObiFsbu1S0hAL8zarA2uPBcgEOmKA+QLngSEp8hkmh hLVa/RmP9VFPZp10p5kaAq/smpulr0Wgi5Xll/QeTJKnHIPGCZvVGULYh59CjfFcaJpH aqhuZk1fnAn0iiiV55yzPh/0GTtPzPlnptA9bIOMYRjHEXCtaS4FX8XFvPKkUYGork41 IKyxuqwVLCohSFaKH/vVHDZ+agvLR7p9qudZSmEfmJIDR+5/ZgLpZUupPL20oj0bsGj/ BGiI1MEpdAHKtWmSptZvfGGtJDys8XjXk+N4QMWTGmUqd3APAz3wKuuxi+gOyeIlD7z8 m0sw== X-Gm-Message-State: APjAAAWhYYpNtzz99O1jSoaHRUnDbBAEfZ/BSeCw3KP/y2CF7NruVfva pEJ5RDm1bxy+Fcgy9goOvDzg0w== X-Google-Smtp-Source: APXvYqztay6Yb+QIZjMIXgP/NTKKBDSokMhhJhNQBbxSBqLRj/Kts7XEjjIqjt8CsBOxwxaGiowugA== X-Received: by 2002:a02:2243:: with SMTP id o64mr4786098jao.100.1565900962576; Thu, 15 Aug 2019 13:29:22 -0700 (PDT) Received: from localhost (c-73-95-159-87.hsd1.co.comcast.net. [73.95.159.87]) by smtp.gmail.com with ESMTPSA id e22sm2717551iog.2.2019.08.15.13.29.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2019 13:29:22 -0700 (PDT) Date: Thu, 15 Aug 2019 13:29:21 -0700 (PDT) From: Paul Walmsley X-X-Sender: paulw@viisi.sifive.com To: Alistair Francis , David Abdurachmanov cc: Anup Patel , "aou@eecs.berkeley.edu" , "palmer@sifive.com" , "linux-kernel@vger.kernel.org" , "rppt@linux.ibm.com" , "hch@infradead.org" , Atish Patra , "linux-riscv@lists.infradead.org" Subject: Re: [PATCH v5 2/2] RISC-V: Setup initial page tables in two stages In-Reply-To: Message-ID: References: <20190607060049.29257-1-anup.patel@wdc.com> <20190607060049.29257-3-anup.patel@wdc.com> <847fb8c879bbd2c3fd41dc1e428b3217253acebb.camel@wdc.com> User-Agent: Alpine 2.21.9999 (DEB 301 2018-08-15) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 15 Aug 2019, David Abdurachmanov wrote: > Yes, I do see those in Fedora/RISCV build farm every morning, but with > riscv64 and 5.2.0-rc7 kernel. [...] > fedora-riscv-4 login: [178876.406122] Unable to handle kernel paging > request at virtual address 0000000000012a28 > fedora-riscv-7 login: [17983.074847] Unable to handle kernel paging > request at virtual address 0fffffdff5e14700 Alistair, you're seeing panics immediately after the userspace transition, right? 100% of the time? If so, this is probably a different bug. Most likely the TLB flushing issue. - Paul