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=-0.0 required=3.0 tests=DATE_IN_PAST_03_06, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 C12EAC5B57D for ; Wed, 3 Jul 2019 00:51:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86BE4218EA for ; Wed, 3 Jul 2019 00:51:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="S/9wjNxz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727290AbfGCAvh (ORCPT ); Tue, 2 Jul 2019 20:51:37 -0400 Received: from mail-lj1-f193.google.com ([209.85.208.193]:42060 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726430AbfGCAvh (ORCPT ); Tue, 2 Jul 2019 20:51:37 -0400 Received: by mail-lj1-f193.google.com with SMTP id t28so463192lje.9 for ; Tue, 02 Jul 2019 17:51:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=16juguPwtTD1vWpUNQpyIYEAEOADqNOzx5F+yEENpfM=; b=S/9wjNxzHSQ44lx7QK89mdaRsjoKX1ZHgfg3NuCejeCzRPPew2tWGQF+4K7vlloGvm tyN6KUOOcr3VvGxxqoNTkXQVxwWSdgw6rRxyFAtqS2wmE4uIzfvXER5NQaV0WvTgDSO/ G7CftJYBPlUxgiiZGrDHr7XemlK99J37xqC6ZOicBwBXGmkzZiihRX4yIIpvZp2yFexg a7FQYsjQ7dRg4vmj1VZqWbV5+hptW5EvSKIt7hNJxWmqz6RxXpQcQrlL4oP+c+fXuPnm JcF2i68p+gi5kx0i/DM9PMGUD2oVxl7Rs4ZjGSg8mLnFJjXxbx6vHt20X8U5l6/jqpk/ XrvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=16juguPwtTD1vWpUNQpyIYEAEOADqNOzx5F+yEENpfM=; b=QPQQdlTr8JZnnJYJXVRpP5+4ASaGwfWunB0fGS3u7FxPHeTSwN5IlHz445oBzuEoo2 G1on/a9VOjLo5hj/V3grQB6EAcAfqxwBPd+pRVPmeh667at1pNi/1icPw65mdMRwfbpa dYz2+Jp5OvfIQINNG5Dg9AJdNKMgL6K2hmzqobhnqa6AK8yNsJOhy9wu1/LF3Lf565qn 9FEgcqN/2r2YZUYYl/HQDJDsDo7UsXwecj+euafXfqqxHoV6RX8l1zAgALihMXikBlw7 MUF1Rpc8G4CV5DPMRYKxmrJAyKtNIBvZwGsrtH94R86Pinr84QnJMt0SfqKTlO+hLlVJ mV4w== X-Gm-Message-State: APjAAAXxfa1MHaHqiQIZZ+mYV+eQDz9k7h0u1TEehvITOIWl4pC6bNNn lUS5Rdp1ESdOKwC1cAEy7Iah9cQnmK6bMlAdvwzO6OrsYnQ= X-Google-Smtp-Source: APXvYqzqBXDeMKmpI7HFc6XkzadQ68osH+Li6FhgxXGtJx4NhJW7ZyaamzfpJOk299AcYNEfRxB1ATHZc5WRU8OT9jg= X-Received: by 2002:a2e:a0cf:: with SMTP id f15mr18775412ljm.180.1562101588459; Tue, 02 Jul 2019 14:06:28 -0700 (PDT) MIME-Version: 1.0 References: <20190617221134.9930-1-f.fainelli@gmail.com> In-Reply-To: <20190617221134.9930-1-f.fainelli@gmail.com> From: Linus Walleij Date: Tue, 2 Jul 2019 23:06:16 +0200 Message-ID: Subject: Re: [PATCH v6 0/6] KASan for arm To: Florian Fainelli Cc: Linux ARM , bcm-kernel-feedback-list , Alexander Potapenko , Dmitry Vyukov , Jonathan Corbet , Russell King , christoffer.dall@arm.com, Marc Zyngier , Arnd Bergmann , Nicolas Pitre , Vladimir Murzin , Kees Cook , jinb.park7@gmail.com, Alexandre Belloni , Ard Biesheuvel , Daniel Lezcano , Philippe Ombredanne , liuwenliang@huawei.com, Rob Landley , Greg KH , Andrew Morton , Mark Rutland , Catalin Marinas , Masahiro Yamada , Thomas Gleixner , thgarnie@google.com, David Howells , Geert Uytterhoeven , Andre Przywara , julien.thierry@arm.com, drjones@redhat.com, philip@cog.systems, mhocko@suse.com, kirill.shutemov@linux.intel.com, kasan-dev@googlegroups.com, Linux Doc Mailing List , "linux-kernel@vger.kernel.org" , kvmarm@lists.cs.columbia.edu, Andrey Ryabinin Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Florian, On Tue, Jun 18, 2019 at 12:11 AM Florian Fainelli wrote: > Abbott submitted a v5 about a year ago here: > > and the series was not picked up since then, so I rebased it against > v5.2-rc4 and re-tested it on a Brahma-B53 (ARMv8 running AArch32 mode) > and Brahma-B15, both LPAE and test-kasan is consistent with the ARM64 > counter part. > > We were in a fairly good shape last time with a few different people > having tested it, so I am hoping we can get that included for 5.4 if > everything goes well. Thanks for picking this up. I was trying out KASan in the past, got sidetracked and honestly lost interest a bit because it was boring. But I do realize that it is really neat, so I will try to help out with some review and test on a bunch of hardware I have. At one point I even had this running on the ARMv4 SA1100 (no joke!) and if I recall correctly, I got stuck because of things that might very well have been related to using a very fragile Arm testchip that later broke down completely in the l2cache when we added the spectre/meltdown fixes. I start reviewing and testing. Yours, Linus Walleij