Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp1182832ybt; Thu, 18 Jun 2020 02:34:14 -0700 (PDT) X-Google-Smtp-Source: ABdhPJys631xTbt9neiehVZzW94M57jnE0ewKJ/0weU60kCBwY7Kn/lN3CHoR7MyGHsQHAQzoe2L X-Received: by 2002:a17:906:938b:: with SMTP id l11mr2956706ejx.99.1592472854187; Thu, 18 Jun 2020 02:34:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1592472854; cv=none; d=google.com; s=arc-20160816; b=RawNDIQvzGubrjV7BumNGndluwRl7aGNNS3mX1tJXI64oywoVbMhEWknt7ARLENUIY 4Maiwzq+gy6lGJrVKRPRtD0bBelTcgfCzWUNURNxNd0BatGXJHNkMrlLkwp1aT+ra/vU 4f3sQxIl5Is0kCQWi/4VKdtVapJQRFCsPA2OWtf8cql5UiRDxg9IN8mqHCTLPCk1Vdfr nAFSNw5LVZFbT8EDo/jHY9GqcE0U/Cw9ylCmKci6Pqbl3i6DXqI+lYw3vNcK1dbyr9wF HAav9i5CITvQNNWJwh/uiNLcFZzSqrBtvfxk3Vv5T5Kl97iSlAJxUw1ArScGDqaKYCz7 ExrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:from:subject:mime-version :message-id:date:dkim-signature; bh=L6v3WNe9vB4gYfOBJzsidmJB3J+19cEKm9MUweYc46U=; b=xSi6rRORl27iGhfcwtLkZDhjCd0Zf+hgywe+BCk29MfWx+JrVK2fqeWErybTzWam/n A4OWk1nl1QY8TGEp9JXeyzxE57ZgdbjwE0cL3YupvuAa+CpJVetC25ISL87pitpLL0MM es2ZUpuP4neRAZ0c31ZYptKy5PdPMj8LMewYvpWDo4rsV5Z8+DnjT2R6qbYaxoJZwWkv weI16Nm0jOH42lnhHACGT4bDlo4jpfrGfteXehAoNpZdGZgQVmBxrnZk5P6ld12r5kcN rETp0SrVEmpjFsDgRJ3EJgxmhykKi7WyBF/6yg1x7rwb1EEWqbAub2WLt+1wBkkCX8Xr M+7g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=Lrw5CS3S; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id k1si1594054eja.313.2020.06.18.02.33.52; Thu, 18 Jun 2020 02:34:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=Lrw5CS3S; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729179AbgFRJcB (ORCPT + 99 others); Thu, 18 Jun 2020 05:32:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbgFRJcA (ORCPT ); Thu, 18 Jun 2020 05:32:00 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFC72C06174E for ; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id o140so5735452yba.16 for ; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=L6v3WNe9vB4gYfOBJzsidmJB3J+19cEKm9MUweYc46U=; b=Lrw5CS3SLvONDKoeW6LlNlz6st2JCT6q3diuLRr/xxJ7vfuPZxfICzFgK9pJKhMgQV Pzcu/M/pXb/St8kvLH4IP+SKI2RZRbuVehv79IifS2C3NKtlWycbBw6iB9nAG4EdVxep D1Ucxn1UTG4SRnbNCPiFrObnnhR8sjKm3K579epxPkB3vuUSimWegkn3RY1fo8zTPyy/ U4SDhAlAP8ydgSbZ5ZGHH1vHTmz124P8HVOi41KwcHYi1dfA4kWn8ri1JgHdVAKuAn+I Jf+dogYy6Ht0l/w7HDwfVLJG1oYbcVLomsGlse+Uf2sLdZz/AH47cb9V3zxWpDtTT+D9 mQfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=L6v3WNe9vB4gYfOBJzsidmJB3J+19cEKm9MUweYc46U=; b=Uir8HV2fBZRnsHO64bd+eMAzCnFcw6YYKcXMVEhBhB1PsIBuFEK5xbGlohbkZ6Q79g jTVjXmvJTjFVXSgnTo5zbrOc8XVMMTFS1p4Ym2R5p79yGtdmsgUqJqgpEZ9WcMmQNWpL qraotO0z23Uy7I3sTZB8DfJezyZ7B3ZAV4dv84Srgvwfe99xIXaumF2ViNcUf/1oFXDq lOb4HKz043Ygq7nCsW632iAns8NLXXX9Pc5MHBSk4uty5nenMk688t0BS1n4JkPYLGe9 djKIN13npIrrpBPo/yWEIPoNaGyYJXswdEanqoPLoW07mZG2texP518NZtXSAzEMmGUD orxQ== X-Gm-Message-State: AOAM5319e+EPELPmQIin3G/R25P1jF3+r2lOHW8emCAQzRUQYI34pGQJ cJSvjkxqr3rts5QVQ3ZdE/fNOq3ZrA== X-Received: by 2002:a25:84cc:: with SMTP id x12mr4787589ybm.454.1592472718011; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) Date: Thu, 18 Jun 2020 11:31:15 +0200 Message-Id: <20200618093118.247375-1-elver@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.27.0.290.gba653c62da-goog Subject: [PATCH 0/3] kcsan: Re-add GCC support, and compiler flags improvements From: Marco Elver To: elver@google.com, paulmck@kernel.org Cc: will@kernel.org, peterz@infradead.org, bp@alien8.de, tglx@linutronix.de, mingo@kernel.org, dvyukov@google.com, cai@lca.pw, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org 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 Re-add GCC as a supported compiler and clean up compiler flags. To use KCSAN with GCC before GCC 11 is released, the following will get a stable GCC 10 and cherry-pick the patches required for KCSAN support: git clone git://gcc.gnu.org/git/gcc.git && cd gcc git checkout -b gcc-10-for-kcsan releases/gcc-10.1.0 git cherry-pick \ 4089df8ef4a63126b0774c39b6638845244c20d2 \ ab2789ec507a94f1a75a6534bca51c7b39037ce0 \ 06712fc68dc9843d9af7c7ac10047f49d305ad76 ./configure --prefix --enable-languages=c,c++ make -j$(nproc) && make install Marco Elver (3): kcsan: Re-add GCC as a supported compiler kcsan: Simplify compiler flags kcsan: Disable branch tracing in core runtime Documentation/dev-tools/kcsan.rst | 3 ++- kernel/kcsan/Makefile | 4 ++-- lib/Kconfig.kcsan | 3 ++- scripts/Makefile.kcsan | 2 +- 4 files changed, 7 insertions(+), 5 deletions(-) -- 2.27.0.290.gba653c62da-goog