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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham 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 5F9B5C388F7 for ; Thu, 22 Oct 2020 11:45:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3682223BF for ; Thu, 22 Oct 2020 11:45:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="llBRAaxs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2897548AbgJVLp5 (ORCPT ); Thu, 22 Oct 2020 07:45:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36220 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437249AbgJVLp5 (ORCPT ); Thu, 22 Oct 2020 07:45:57 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 002FCC0613CE for ; Thu, 22 Oct 2020 04:45:56 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id v190so786143qki.21 for ; Thu, 22 Oct 2020 04:45:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:message-id:mime-version:subject:from:to:cc; bh=WwVpVCl4mVaLx/Y9kggr1s7Fduh1lvdItvOpC6doLlc=; b=llBRAaxsFK0Jv3FwPUH131xi0+2HXuuQAur4/LHy8+LZTojR2hfqcUCTqi2qxQCmqD SPkPwBcPzG52V7NXfAlFDUuQM+sHYqj1HqMqAq2kwztEvNHe8lMOZ3v54Dqaq85kDtST 3wbJH/CG1GEYGoNrQ/Lz9les8TWhy39LzMhqrb0+ccyiHTqF96tGdKi+Hui1gegyU5SJ MEA2FWkxVRhDngcMG7ybJaXrwBFmVEwBFvudoSOjiQvApGTCEqo9CNt3or84x/i8qroL kma1H5dJYtZnt9J/JQ7spjDCEPvAvoHRYlSWcsbv+21jOhtOKiopa8tOgtNGFoW1hLzd 9u0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:message-id:mime-version:subject:from :to:cc; bh=WwVpVCl4mVaLx/Y9kggr1s7Fduh1lvdItvOpC6doLlc=; b=jm+8Lpnykew4n8Hbc877pVT8ik3LJSlJVzdAT4bkL0M2jOzxQhNlOIEWFsqoGEzaw2 aJ7QYSmkq13y1rOrmWLReWCevBUo/arjEXTkpf6B1VQhBelsL+a+lPmNYU8MYJEBGFu5 f5CbDBLxPSlD5r1nInYZrqzIZnV5qE5FiG8XISPFhEu1aCgUS+4d5ZvyWr+b8wjFdoM/ /E+UHs8MR2OrCLX5TvLS1wtqJPT1N5qUTxBZedY4y+EPUcKDVA2GA6/2b1GSRSKZqTtE 2wgqY2uHnemAicedH1QrZryGQRtIe1ylQpSjp/K3mu2ODKvsMGESxtdOfmKvIstQHgAa I/2g== X-Gm-Message-State: AOAM533FsNLe5hmJUwBOi4Gb6hlsLMG4gR8fo1JYwhIMZsHuSTcE9hqa 0ZT/2wuu/ZbyKYFniwy0Q8UJ2Q9q5g== X-Google-Smtp-Source: ABdhPJzBf/O9zRXYetQ/53zGLvVJAs1fnhUcZGYm6sz65bHf5tJjwynyYkbp5PSjE/YHlyX89jFZ2rU/TQ== Sender: "elver via sendgmr" X-Received: from elver.muc.corp.google.com ([2a00:79e0:15:13:f693:9fff:fef4:2449]) (user=elver job=sendgmr) by 2002:ad4:456c:: with SMTP id o12mr1978035qvu.48.1603367156174; Thu, 22 Oct 2020 04:45:56 -0700 (PDT) Date: Thu, 22 Oct 2020 13:45:52 +0200 Message-Id: <20201022114553.2440135-1-elver@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.29.0.rc1.297.gfa9743e501-goog Subject: [PATCH v2 1/2] kcsan: selftest: Ensure that address is at least PAGE_SIZE From: Marco Elver To: elver@google.com, paulmck@kernel.org Cc: mark.rutland@arm.com, dvyukov@google.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In preparation of supporting only addresses not within the NULL page, change the selftest to never use addresses that are less than PAGE_SIZE. Signed-off-by: Marco Elver --- v2: * Introduce patch to series. --- kernel/kcsan/selftest.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c index d98bc208d06d..9014a3a82cf9 100644 --- a/kernel/kcsan/selftest.c +++ b/kernel/kcsan/selftest.c @@ -33,6 +33,9 @@ static bool test_encode_decode(void) unsigned long addr; prandom_bytes(&addr, sizeof(addr)); + if (addr < PAGE_SIZE) + addr = PAGE_SIZE; + if (WARN_ON(!check_encodable(addr, size))) return false; -- 2.29.0.rc1.297.gfa9743e501-goog