From patchwork Sun May 21 09:36:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13249342 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9F18C7EE2E for ; Sun, 21 May 2023 09:37:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Q00yv/T/k6e8N80ktRWpNhSXTHDfN9rBPiZWjdJU5bI=; b=gn4lTwasfx74a+ MZwmHl/LH9GocNGVv8eNP+byNLibFcHQ3h/xw+W7xUaby8KBbAW9sl3TXY5W9NkrYlBODQuY4kZf7 2Fe2MitAiAfrIW3BY4yZ868Fp3OI8WzVGzUIRdEU3e9N7am1hxy5prviyJGqfieQJiU02Nj8Jt1+N 7BvM7T8yggQ4Qb+j6h0cRd/d1Uh9f5/fRmsi+SGqqQBAwSnQWmkjm3shsVrYx6bfd0zk9dZHgWscw GVjTpuE4jOxAbhQixqVa7SbAw6St/gCGxVQzhJKjz8M+1i2JUvJ7Yn6Jugvg5I98pjYYk2Pwpm5GY vy4yWYdOONVAOvK2Do2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q0fUw-003Vf1-39; Sun, 21 May 2023 09:37:06 +0000 Received: from todd.t-8ch.de ([159.69.126.157]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q0fUn-003VaB-0k for linux-riscv@lists.infradead.org; Sun, 21 May 2023 09:37:01 +0000 From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1684661803; bh=lj2geLr/EdywhNVRdZihjVutdtlzdrTLYrnqWuCaRHI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=cFDVWF4VRJK30uYLVDvSQLOKcqHfOapaHKy+uCiYEHV8joFGCP1VNLTw5YTPsrZdu tKcAKkoYbj7IucjFJRilU2Xdy+lRiSR3cTBsitu86G2g61qPlvLRSWYVEYyWSjooCV 85iXyDnx1wO3gM4uzxU1VGrjVCV4siMhkPC8TJwY= Date: Sun, 21 May 2023 11:36:30 +0200 Subject: [PATCH 2/7] tools/nolibc: x86_64: disable stack protector for _start MIME-Version: 1.0 Message-Id: <20230521-nolibc-automatic-stack-protector-v1-2-dad6c80c51c1@weissschuh.net> References: <20230521-nolibc-automatic-stack-protector-v1-0-dad6c80c51c1@weissschuh.net> In-Reply-To: <20230521-nolibc-automatic-stack-protector-v1-0-dad6c80c51c1@weissschuh.net> To: Willy Tarreau , "Paul E. McKenney" , Shuah Khan , Paul Walmsley , Palmer Dabbelt , Albert Ou , Nathan Chancellor , Nick Desaulniers , Tom Rix Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org, llvm@lists.linux.dev, =?utf-8?q?Thomas_We?= =?utf-8?q?i=C3=9Fschuh?= X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1684661802; l=1079; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=lj2geLr/EdywhNVRdZihjVutdtlzdrTLYrnqWuCaRHI=; b=JVbhHarzeBvvcx5vDuAxt69sG68MA2ijZHbow7ctpQ1HKfKs70ByaOsPMJGeyj+rVqnfqQVyk 1O4/8Fg7pOIBbY4WpL5JP7Mj+mvvpxTiEIflujBujsb3if9KDfDQVZN X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230521_023657_799572_5D12F3D2 X-CRM114-Status: UNSURE ( 7.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This was forgotten in the original submission. It is unknown why it worked for x86_64 on some compiler without this attribute. Reported-by: Willy Tarreau Closes: https://lore.kernel.org/lkml/20230520133237.GA27501@1wt.eu/ Fixes: 0d8c461adbc4 ("tools/nolibc: x86_64: add stackprotector support") Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/arch-x86_64.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h index d98f6c89d143..e201af15e142 100644 --- a/tools/include/nolibc/arch-x86_64.h +++ b/tools/include/nolibc/arch-x86_64.h @@ -190,7 +190,7 @@ const unsigned long *_auxv __attribute__((weak)); * 2) The deepest stack frame should be zero (the %rbp). * */ -void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void) +void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_protector)) _start(void) { __asm__ volatile ( #ifdef NOLIBC_STACKPROTECTOR