From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f74.google.com (mail-wr1-f74.google.com [209.85.221.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37CD42C9D for ; Tue, 30 Nov 2021 11:45:58 +0000 (UTC) Received: by mail-wr1-f74.google.com with SMTP id q17-20020adff791000000b00183e734ba48so3524731wrp.8 for ; Tue, 30 Nov 2021 03:45:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=JzBhpw0Qm81Z9lbF5IGyZhQAb+5o04LDLkCFlxupKLc=; b=pHRgTgtBe9w8GJo+UVuCrCXkkBePrXHeJXXGSGxiMQTDZhPB1HMZjVhCQEHB+8iuxA QTqapU0TX6O4TE0Y48efyZW2bq1hF37Xt0PGzM68wPVdqNEwB+3nHHqWFUL1gWu3kHtR Cq7Wrdud5dEh12cWU90OhIU4V/9Q7ULAOS9mOORJ6Eqe+R8j1ryew/Yd+VDrcTllPVFh 5lcxmqYwyS4EYnDSPUY2x7vLF1W4hPQ8ICF36xbdENuMBTVVtdo+SbNEIlEehDKxtwYR kgzu3xNPjqGc6hHJvBg6+Ezt/2WHsUBVgd1XEwAmeXQPIFvn+uf/vjPzU0O+2NhHvmqd ksUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=JzBhpw0Qm81Z9lbF5IGyZhQAb+5o04LDLkCFlxupKLc=; b=tEScLhNEahPZtIHDK5fJ/GsP4U7wclGAkjYLKNISqL12ZV8lFd2HxPWa8hhitencJx ZeMGX8UQBaJ8qF8LD+kEjLqvTQJdXS/drRWxXXis0uD0LVOvkCVR8bPL6AqaVuq2aGjq AeDG9hX2Wm1/usH2dHBNY/x5sukMbfWKSF+qWGjH3GpvKDBXvrGo5j4Do/EqvjUnjKVr vTp0dIUge3SjgQkBZviMc7XEMjA5nqGTKuJ9lQG8bJT/NumQBOW84H7wRg5zC2244d2e AehP/QMBOaw5OOzVCSjH060PVc9VU4Mvoq+8CzU+8qI0VUq5LvSikVdTTtShbv3vn2ah 4NOQ== X-Gm-Message-State: AOAM530kveEFBiM54VAQlyB0sWnFH8g9C62R6jDzEsnFBR8ZpfcP4jQ5 GQlks8Du0z2QD05Wu69Io/Ul5gWFXQ== X-Google-Smtp-Source: ABdhPJyGlw39n0+Jfq+xh033MGOvVeVGOoalcV20EEznri+jie430fZfA9+7esf3Wo7SpGvol2V1AwHpQw== X-Received: from elver.muc.corp.google.com ([2a00:79e0:15:13:86b7:11e9:7797:99f0]) (user=elver job=sendgmr) by 2002:a7b:cc8f:: with SMTP id p15mr4408290wma.129.1638272756667; Tue, 30 Nov 2021 03:45:56 -0800 (PST) Date: Tue, 30 Nov 2021 12:44:30 +0100 In-Reply-To: <20211130114433.2580590-1-elver@google.com> Message-Id: <20211130114433.2580590-23-elver@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20211130114433.2580590-1-elver@google.com> X-Mailer: git-send-email 2.34.0.rc2.393.gf8c9666880-goog Subject: [PATCH v3 22/25] objtool, kcsan: Add memory barrier instrumentation to whitelist From: Marco Elver To: elver@google.com, "Paul E. McKenney" Cc: Alexander Potapenko , Boqun Feng , Borislav Petkov , Dmitry Vyukov , Ingo Molnar , Mark Rutland , Peter Zijlstra , Thomas Gleixner , Waiman Long , Will Deacon , kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Adds KCSAN's memory barrier instrumentation to objtool's uaccess whitelist. Signed-off-by: Marco Elver --- tools/objtool/check.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 21735829b860..61dfb66b30b6 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -849,6 +849,10 @@ static const char *uaccess_safe_builtin[] = { "__asan_report_store16_noabort", /* KCSAN */ "__kcsan_check_access", + "__kcsan_mb", + "__kcsan_wmb", + "__kcsan_rmb", + "__kcsan_release", "kcsan_found_watchpoint", "kcsan_setup_watchpoint", "kcsan_check_scoped_accesses", -- 2.34.0.rc2.393.gf8c9666880-goog