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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 D6DC4C2BB85 for ; Wed, 15 Apr 2020 19:17:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB8FB20771 for ; Wed, 15 Apr 2020 19:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586978266; bh=XHeNfk+RvsFEdUEKBdrYeqc0dFZ4gjXC8xUbp/AyGBk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bUs1bpctXGpbpKATQRk6ggNBfqDR3qp46uOgSgHstW2yQVxAwwirv54Y0sJjJFEfe 1TGB1++jepXze3/9wgq/vF75A9djVzg5RDkefmpvpGXBsZDnhsSS2vRB0LwBmy2XO1 f0qyEZK6GQKOVd+V2vlsDvlOZvrzQHj4tRO7Igps= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411731AbgDOTHV (ORCPT ); Wed, 15 Apr 2020 15:07:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:42424 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1416820AbgDOSeQ (ORCPT ); Wed, 15 Apr 2020 14:34:16 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9132F217D8; Wed, 15 Apr 2020 18:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586975655; bh=XHeNfk+RvsFEdUEKBdrYeqc0dFZ4gjXC8xUbp/AyGBk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DXPlfztCxoKWzI1spL1DCIdLqG/S2QQFvqTcQEBso6ov2x8BuS6zoIWiEdHAh9Z/B cA2rPggQjK9uO8HBGfjCNgt4FpQvSLri8vYgu6rEILVBvyfihZMrqnb+au69Nh5urH C4cRtDR38yDJxNZKY3KVi2M9X4Cy48fychENGWEg= From: paulmck@kernel.org To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, kernel-team@fb.com, mingo@kernel.org Cc: elver@google.com, andreyknvl@google.com, glider@google.com, dvyukov@google.com, cai@lca.pw, boqun.feng@gmail.com, "Paul E . McKenney" Subject: [PATCH v4 tip/core/rcu 10/15] objtool, kcsan: Add explicit check functions to uaccess whitelist Date: Wed, 15 Apr 2020 11:34:06 -0700 Message-Id: <20200415183411.12368-10-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200415183343.GA12265@paulmck-ThinkPad-P72> References: <20200415183343.GA12265@paulmck-ThinkPad-P72> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marco Elver Add explicitly invoked KCSAN check functions to objtool's uaccess whitelist. This is needed in order to permit calling into kcsan_check_scoped_accesses() from the fast-path, which in turn calls __kcsan_check_access(). __kcsan_check_access() is the generic variant of the already whitelisted specializations __tsan_{read,write}N. Signed-off-by: Marco Elver Signed-off-by: Paul E. McKenney --- tools/objtool/check.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index b6da413..b6a573d 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -468,8 +468,10 @@ static const char *uaccess_safe_builtin[] = { "__asan_report_store8_noabort", "__asan_report_store16_noabort", /* KCSAN */ + "__kcsan_check_access", "kcsan_found_watchpoint", "kcsan_setup_watchpoint", + "kcsan_check_scoped_accesses", /* KCSAN/TSAN */ "__tsan_func_entry", "__tsan_func_exit", -- 2.9.5