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=-8.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 35F88C433E0 for ; Tue, 23 Jun 2020 06:31:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1149C20724 for ; Tue, 23 Jun 2020 06:31:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="wUBnFpb1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730926AbgFWGb3 (ORCPT ); Tue, 23 Jun 2020 02:31:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730395AbgFWGb3 (ORCPT ); Tue, 23 Jun 2020 02:31:29 -0400 Received: from mail-ot1-x341.google.com (mail-ot1-x341.google.com [IPv6:2607:f8b0:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45EF7C061573 for ; Mon, 22 Jun 2020 23:31:28 -0700 (PDT) Received: by mail-ot1-x341.google.com with SMTP id g7so15432325oti.13 for ; Mon, 22 Jun 2020 23:31:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Qmek8AIjwhUpjq4ifIiYp8uzWRuQrceKBuTssA8WgU4=; b=wUBnFpb1XedTOZz49F9n4D4PIuVtPX5VkJUtaqtxGg7UGknVrrLk60Zx9naVjTQYpL BDk1zi2t7tZIMJb82rFEjfZajaMsFAfhbh9FZYYZ8BPu11D1WPwD9JSuUJ53USXF3eJ3 BDU3eMbwMLCMH35owR629KtTdFBa8up4bL/K/aTED/GVZ2rNWXzFwMf14rzHMKdQ2C3r umREKoXA6uXgJsA82lEpOsHQmCxGoWNtM7q/swcZNx7OoszdTF5+N14EIm40e92Pf/JV wzWzcuqAgcF7UZnbQzN/BW9eedX0VYOZJfbh77b/t64+lrEITy0RMQKRGi5EmJSyHFl3 k/3Q== 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=Qmek8AIjwhUpjq4ifIiYp8uzWRuQrceKBuTssA8WgU4=; b=qtDQ2tSvZfupUFPiFvsnL89UsWMaaToyeZPxLRUMu8c3NicoVXVmSLKyZzJxe+iUpR 0LG5ULM2p44jaeiso3PMcXGYd1LLAETejhxoi4DVCsgB2Oo4gRZ3hLfZjWV9VN+N1waR Bm0GlVS6/HaCrhU+atNJO+2sklVAFuq2to6MW5lUAKyWchRugZgwYpp9iP/MJIPXIYr3 59rqsuBWOa0v0goVXvTitE5Ee0p01EuH+uQ2+CVhPagWMCr/EfxUiqEWM8RNmP9Ypz7o 70NEZ+ng5h0hhgkCvj67PM0/WCmSiVySVO3t0B4nNi7AzqliIrT+hDxc8Bv208JLPrRb Vdkw== X-Gm-Message-State: AOAM5319G9dMgPfILDjikpzVqpsaMiXec2KZiGItXZmnCoK43LdANBsz nNXPprmJH8Mr6bewQxT/8tPB5/gt0OdHlENTk/WrNg== X-Google-Smtp-Source: ABdhPJyIrpltllyO77WrCyCR79bPdhL1fhSudnjvKpS3olL4BruEarN+UIc2fZLLpjqe+SOyDu+d76xm40Uv44HIab4= X-Received: by 2002:a9d:58c9:: with SMTP id s9mr18209710oth.233.1592893887231; Mon, 22 Jun 2020 23:31:27 -0700 (PDT) MIME-Version: 1.0 References: <20200623004310.GA26995@paulmck-ThinkPad-P72> In-Reply-To: <20200623004310.GA26995@paulmck-ThinkPad-P72> From: Marco Elver Date: Tue, 23 Jun 2020 08:31:15 +0200 Message-ID: Subject: Re: [PATCH kcsan 0/10] KCSAN updates for v5.9 To: "Paul E. McKenney" Cc: LKML , kasan-dev , kernel-team@fb.com, Ingo Molnar , Andrey Konovalov , Alexander Potapenko , Dmitry Vyukov , Qian Cai , Boqun Feng 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 On Tue, 23 Jun 2020 at 02:43, Paul E. McKenney wrote: > > Hello! > > This series provides KCSAN updates: > > 1. Annotate a data race in vm_area_dup(), courtesy of Qian Cai. > > 2. x86/mm/pat: Mark an intentional data race, courtesy of Qian Cai. > > 3. Add ASSERT_EXCLUSIVE_ACCESS() to __list_splice_init_rcu(). > > 4. Add test suite, courtesy of Marco Elver. > > 5. locking/osq_lock: Annotate a data race in osq_lock. > > 6. Prefer '__no_kcsan inline' in test, courtesy of Marco Elver. > > 7. Silence -Wmissing-prototypes warning with W=1, courtesy of Qian Cai. > > 8. Rename test.c to selftest.c, courtesy of Marco Elver. > > 9. Remove existing special atomic rules, courtesy of Marco Elver. > > 10. Add jiffies test to test suite, courtesy of Marco Elver. Do we want GCC support back for 5.9? https://lkml.kernel.org/r/20200618093118.247375-1-elver@google.com I was hoping it could go into 5.9, because it makes a big difference in terms of usability as it provides more compiler choice. The only significant change for GCC support is the addition of the checking of (CC_IS_GCC && (....)). Thanks, -- Marco