From patchwork Tue Sep 29 21:46:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11807077 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B44E0618 for ; Tue, 29 Sep 2020 21:47:41 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id EEE9120774 for ; Tue, 29 Sep 2020 21:47:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="IBbDoPst" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EEE9120774 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-20035-patchwork-kernel-hardening=patchwork.kernel.org@lists.openwall.com Received: (qmail 26463 invoked by uid 550); 29 Sep 2020 21:46:55 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 26337 invoked from network); 29 Sep 2020 21:46:54 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=l2+v7INMYKuznv8xFN02uATUaYPeLt4QVP2a2KYnEdY=; b=IBbDoPstUx6PvkrgRiZ41KzIphJCRrEzSeZx7R3BsJc/c2FU1xsagudvCmxJS0b8z2 SjjbJNbVgzgrgsE4IMeYQoBOkgyNAJsokXmK8DUkwveVuIMwv2vc9kL6j11caQYcNzUq 0vjsIxHqB8pCA2/K+LOJlqU0rm+b0gi9ZppmGex0Nq6vg3lFfAKr6863jjw2KdNrpjQl OE30bcUDioAlTaHnVtbs0RImv7YEk6Zl2qjv9SZgAykRMeNQidEDWQq/427XH29WRmMR YCgaWWx4UZCNDu0gcLoZMQgMMVDTjQx98O5L72qcpTB4n7pw1Wyy4oYvBIPd3DNE23kA MbzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=l2+v7INMYKuznv8xFN02uATUaYPeLt4QVP2a2KYnEdY=; b=bMcfk18jK8UncZ36buS1yJfUCNxD84gKaTLQkzsWHFQMiBZpjt47xiSmZSbRIh+qnZ pxODQuiR5nSAIu8/lXNFn/9Gvh3jKWWicbkG2tHsarRIupxaUW4/0KlngJVOxLRm/BWh e8mLTgyEI9WdZZOcGYlVz/YEAvd4oMsXV/pj03Jn0XeH5p6TBwvKBFwVv99r4aiQoQ9X fp5y4IFCMet98HGAN+AX/npE3ab6divXRKaBEbV0L3ELEzx6AoqKyueziSi76wREmBH/ RE64B8VEyP2alQMLqhYCXoykHm0icNSDCzeOHQxYTkg1XXnxbQzV8bij5NF5xGWT8lVJ jr6w== X-Gm-Message-State: AOAM532VUgp3PuIdVGG/4IYxx5heFtmN1ANZA9ByQs22xcNxTcFQk1oT qj9bLmp3Z16xttmcGCtIfr3sfjZb6koyJh6t+hc= X-Google-Smtp-Source: ABdhPJy+h62MhF4FERE0IvCpSLKvcavDzP6aQkays6EhouTsZ6bz+Ey8zRCePHhbZ++PNw0vWZnJFjS/bZTiM4aTEAM= Sender: "samitolvanen via sendgmr" X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a05:6214:1767:: with SMTP id et7mr6378060qvb.43.1601416002753; Tue, 29 Sep 2020 14:46:42 -0700 (PDT) Date: Tue, 29 Sep 2020 14:46:07 -0700 In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> Message-Id: <20200929214631.3516445-6-samitolvanen@google.com> Mime-Version: 1.0 References: <20200929214631.3516445-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 05/29] objtool: Don't autodetect vmlinux.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon , Steven Rostedt Cc: Peter Zijlstra , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen With LTO, we run objtool on vmlinux.o, but don't want noinstr validation. This change requires --vmlinux to be passed to objtool explicitly. Suggested-by: Peter Zijlstra Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- scripts/link-vmlinux.sh | 2 +- tools/objtool/builtin-check.c | 10 +--------- 2 files changed, 2 insertions(+), 10 deletions(-) diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index e6e2d9e5ff48..372c3719f94c 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -64,7 +64,7 @@ objtool_link() local objtoolopt; if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then - objtoolopt="check" + objtoolopt="check --vmlinux" if [ -z "${CONFIG_FRAME_POINTER}" ]; then objtoolopt="${objtoolopt} --no-fp" fi diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c index 71595cf4946d..eaa06eb18690 100644 --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -41,18 +41,10 @@ const struct option check_options[] = { int cmd_check(int argc, const char **argv) { - const char *objname, *s; - argc = parse_options(argc, argv, check_options, check_usage, 0); if (argc != 1) usage_with_options(check_usage, check_options); - objname = argv[0]; - - s = strstr(objname, "vmlinux.o"); - if (s && !s[9]) - vmlinux = true; - - return check(objname, false); + return check(argv[0], false); }