From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 09 Jul 2025 14:08:20 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uZTb2-00Fh9I-2h for lore@lore.pengutronix.de; Wed, 09 Jul 2025 14:08:20 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uZTb2-0001IR-A7 for lore@pengutronix.de; Wed, 09 Jul 2025 14:08:20 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=Ati7OOyktPOK77Cl4pAQRd4SEgt20sjK4OKGmTqSvAM=; b=el+lANWitWMEb2yD9XkiTKGHr9 EnWXDc80gD1cx/gRB/ShIP11GkVw2ie1KKTE5BvwK32bBrLk89HOM096BmjpKcX/US6JOkse7gT0v QcZ4d4b5wIbLJiJMsBd8BbpflKqEIC8QqFxAyGPnHNg5Y/lU6b/MelIGgxYO8kvPY1SD8hL1MpK5a 9lf9+6aNNho1aJgdbIQrus572v9gO1sO76PtiV8umJhNpxhQEN/qj5W4SbS4oEjjlxkrrSZw+Bili Bc0JIsbRDIpBeV1Xa4CzeEDEpeUpQ8UxlB3hMbGbFZv3cDaZ+Ko6ak3OsKWloOGq2DuSlnmtfLSMm wmiiOwqg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uZTad-00000008aOO-1zhS; Wed, 09 Jul 2025 12:07:55 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uZRt5-00000008HmL-1bI2 for barebox@lists.infradead.org; Wed, 09 Jul 2025 10:18:53 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uZRt4-00044t-1F; Wed, 09 Jul 2025 12:18:50 +0200 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uZRt3-007ZCL-2l; Wed, 09 Jul 2025 12:18:49 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1uZRt3-00Gx1j-0n; Wed, 09 Jul 2025 12:18:49 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Wed, 9 Jul 2025 12:18:47 +0200 Message-Id: <20250709101848.4039929-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250709_031851_421512_0CCF7119 X-CRM114-Status: UNSURE ( 7.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 1/2] hardening: make stack guard page the default X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) We have had guard page support for close to two years now and it's time we start enabling it by default to catch stack overflows. Signed-off-by: Ahmad Fatoum --- lib/Kconfig.hardening | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/Kconfig.hardening b/lib/Kconfig.hardening index 658de4953aa1..53bf4d5bb956 100644 --- a/lib/Kconfig.hardening +++ b/lib/Kconfig.hardening @@ -153,6 +153,7 @@ config FORTIFY_SOURCE config STACK_GUARD_PAGE bool "Place guard page to catch stack overflows" depends on ARM && MMU + default y help When enabled, barebox places a faulting guard page to catch total stack usage exceeding CONFIG_STACK_SIZE. On overflows, that hit -- 2.39.5