From patchwork Thu Jun 4 13:49:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Popov X-Patchwork-Id: 11588023 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 EF487739 for ; Thu, 4 Jun 2020 13:51:32 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 5E44420772 for ; Thu, 4 Jun 2020 13:51:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5E44420772 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-18923-patchwork-kernel-hardening=patchwork.kernel.org@lists.openwall.com Received: (qmail 9971 invoked by uid 550); 4 Jun 2020 13:51:19 -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 9905 invoked from network); 4 Jun 2020 13:51:18 -0000 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=JQF4gusMMse1t+P2Qqr0GcfguvDdOuRmX3WacGaJBcQ=; b=N4xFZgSpgAOjFJlGdEAmMQ9Ik989nxh4ExKKQLdtUa3p28xocE0WAhAj1sYbDbq5nZ I+nKdTAYPRzV1F8Etid3i2DuWu1fSYL8scyKVPH+i3Je5TXTg5hQJKIluxqGP3ou7zKo rzybmKInCWYqEAKwckcKV5MUs413ys1yUTna3BxDsR/AlNUOzGS+IUgNXKzHfUKe140d kmizL6rG9IBXnajJGYRC/+myU8r8sJZkzVLOIpGf67/7/HujFQRNWcNQQmio/cd4HS9/ iMy32Ks9bubPMxACg/oQySQ08Pv8oIOsGxrugEjBVszhZrqM17WOcxRrP4MXFa7+56yN TFyg== X-Gm-Message-State: AOAM5303P9SeIdefsRhRXEN3iGbHhuxINEiz4+fo4yppD7W6fjegGlsr WSZOLHhWyip0g1OgvtxIn00= X-Google-Smtp-Source: ABdhPJxGDD5ukdedXoxuQ27N5jKq1fSsreuCe9q3nAgk5mstTvN2pJQfkeE/l29dSTZfbBg2leMMKA== X-Received: by 2002:a05:6512:3214:: with SMTP id d20mr2637853lfe.203.1591278666991; Thu, 04 Jun 2020 06:51:06 -0700 (PDT) From: Alexander Popov To: Kees Cook , Emese Revfy , Miguel Ojeda , Masahiro Yamada , Michal Marek , Andrew Morton , Masahiro Yamada , Thiago Jung Bauermann , Luis Chamberlain , Jessica Yu , Sven Schnelle , Iurii Zaikin , Catalin Marinas , Will Deacon , Vincenzo Frascino , Thomas Gleixner , Peter Collingbourne , Naohiro Aota , Alexander Monakov , Mathias Krause , PaX Team , Brad Spengler , Laura Abbott , Florian Weimer , Alexander Popov , kernel-hardening@lists.openwall.com, linux-kbuild@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, gcc@gcc.gnu.org Cc: notify@kernel.org Subject: [PATCH 4/5] gcc-plugins/stackleak: Don't instrument itself Date: Thu, 4 Jun 2020 16:49:56 +0300 Message-Id: <20200604134957.505389-5-alex.popov@linux.com> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200604134957.505389-1-alex.popov@linux.com> References: <20200604134957.505389-1-alex.popov@linux.com> MIME-Version: 1.0 There is no need to try instrumenting functions in kernel/stackleak.c. Otherwise that can cause issues if the cleanup pass of stackleak gcc plugin is disabled. Signed-off-by: Alexander Popov Acked-by: Kees Cook --- kernel/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/Makefile b/kernel/Makefile index 4cb4130ced32..d372134ac9ec 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -118,6 +118,7 @@ obj-$(CONFIG_RSEQ) += rseq.o obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o +CFLAGS_stackleak.o += $(DISABLE_STACKLEAK_PLUGIN) obj-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stackleak.o KASAN_SANITIZE_stackleak.o := n KCOV_INSTRUMENT_stackleak.o := n