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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D769FC433F5 for ; Tue, 14 Dec 2021 16:25:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236217AbhLNQZV (ORCPT ); Tue, 14 Dec 2021 11:25:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236335AbhLNQYH (ORCPT ); Tue, 14 Dec 2021 11:24:07 -0500 Received: from mail-wr1-x44a.google.com (mail-wr1-x44a.google.com [IPv6:2a00:1450:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2DA1C061792 for ; Tue, 14 Dec 2021 08:23:48 -0800 (PST) Received: by mail-wr1-x44a.google.com with SMTP id f13-20020adfe90d000000b001a15c110077so92640wrm.8 for ; Tue, 14 Dec 2021 08:23:48 -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=DRsUBze0TCq/8OPjxRo856aiOc30zNOBN3bl6uBcnGs=; b=pb+BQoZ+20k4jQn45XqB5EEUKM9VUAj9iuAHLbPgyXtF8+YsW/fWdE2vL6sFEFEoyK tWCv5yjZsXSeiLNcRp7Ukw9zJKfdtRTRck34pTDgR3eAKHXUMHwrxvmjrt0vnrCi9Ntj VcSfevLftX/8QebdbsT2/yyELtFYLs0K5L5GeCrGFcj/LwYUDawmOOwWa5lI+UYiUV6d aDd+xSGh3C+3mSWHyY145Tmd8x8T+UjCaGtCtAdmAUcJGTsJ04N7Px5YHgXcZ0IIbHVR KHuCXm+v9/dfHaUfRJl4TuJQOxWAjETiKDDAkBqZM45Aiw8oYXWucw0t068DlQk8Wo5C zofw== 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=DRsUBze0TCq/8OPjxRo856aiOc30zNOBN3bl6uBcnGs=; b=t3aDBibhTAA/yKqxKY0ILDkPs19bBoDXnUNTzDkFflQw2s4HfBdfXvlumCUiayX3bH 8lRTN9MmFMj/Y91CZkLgAY2Y6F8johTq/z1oLXPuG1plvq3dZOKUNysZTVvguYp6d0ei U5+BxRJFnrHRFOBVjccscFa+K32E5nG1383FJWhfMW+YPWvoHcJBQDuCVbyXxyv44ex4 ItMLXnGw4QDhxXpui+nj+ct0vf4fjTmLGxM9dFFk7x5BcDJ5iV4DM1BgqiX0E5nsf7Hz Om3I7xvqKIixDWSz/MBhWBDV0SOWCQ6OX6aKizPZ7Thciu6AREjBdSdZR6I77xUHATQU Tkdg== X-Gm-Message-State: AOAM532tdKkprHg/12eeIesTyq/EMWzPnAvz8lRYkGy4YYRykHAOFwOi R6R1qbJdeNWh5Gsi9PfFE//XbNrWhi0= X-Google-Smtp-Source: ABdhPJzbEf5lWlF6RWfh8Re9EBCpxKO3TumG/VSHFoE+dz+wF3Gg0ijQABT1lDRRxNcQr8YrfKX8rhC5/wo= X-Received: from glider.muc.corp.google.com ([2a00:79e0:15:13:357e:2b9d:5b13:a652]) (user=glider job=sendgmr) by 2002:a5d:644f:: with SMTP id d15mr6736523wrw.662.1639499027200; Tue, 14 Dec 2021 08:23:47 -0800 (PST) Date: Tue, 14 Dec 2021 17:20:49 +0100 In-Reply-To: <20211214162050.660953-1-glider@google.com> Message-Id: <20211214162050.660953-43-glider@google.com> Mime-Version: 1.0 References: <20211214162050.660953-1-glider@google.com> X-Mailer: git-send-email 2.34.1.173.g76aa8bc2d0-goog Subject: [PATCH 42/43] objtool: kmsan: list KMSAN API functions as uaccess-safe From: Alexander Potapenko To: glider@google.com Cc: Alexander Viro , Andrew Morton , Andrey Konovalov , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Christoph Hellwig , Christoph Lameter , David Rientjes , Dmitry Vyukov , Eric Dumazet , Greg Kroah-Hartman , Herbert Xu , Ilya Leoshkevich , Ingo Molnar , Jens Axboe , Joonsoo Kim , Kees Cook , Marco Elver , Matthew Wilcox , "Michael S. Tsirkin" , Pekka Enberg , Peter Zijlstra , Petr Mladek , Steven Rostedt , Thomas Gleixner , Vasily Gorbik , Vegard Nossum , Vlastimil Babka , linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org KMSAN inserts API function calls in a lot of places (function entries and exits, local variables, memory accesses), so they may get called from the uaccess regions as well. Signed-off-by: Alexander Potapenko --- Link: https://linux-review.googlesource.com/id/I242bc9816273fecad4ea3d977393784396bb3c35 --- tools/objtool/check.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 21735829b860c..9620b5224754e 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -937,6 +937,25 @@ static const char *uaccess_safe_builtin[] = { "__sanitizer_cov_trace_cmp4", "__sanitizer_cov_trace_cmp8", "__sanitizer_cov_trace_switch", + /* KMSAN */ + "kmsan_copy_to_user", + "kmsan_report", + "kmsan_unpoison_memory", + "__msan_chain_origin", + "__msan_get_context_state", + "__msan_instrument_asm_store", + "__msan_metadata_ptr_for_load_1", + "__msan_metadata_ptr_for_load_2", + "__msan_metadata_ptr_for_load_4", + "__msan_metadata_ptr_for_load_8", + "__msan_metadata_ptr_for_load_n", + "__msan_metadata_ptr_for_store_1", + "__msan_metadata_ptr_for_store_2", + "__msan_metadata_ptr_for_store_4", + "__msan_metadata_ptr_for_store_8", + "__msan_metadata_ptr_for_store_n", + "__msan_poison_alloca", + "__msan_warning", /* UBSAN */ "ubsan_type_mismatch_common", "__ubsan_handle_type_mismatch", -- 2.34.1.173.g76aa8bc2d0-goog