From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 09 Oct 2023 13:53:57 +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 4.94.2) (envelope-from ) id 1qpoph-001qYg-ML for lore@lore.pengutronix.de; Mon, 09 Oct 2023 13:53:57 +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 1qpopf-0002Gk-SU for lore@pengutronix.de; Mon, 09 Oct 2023 13:53:57 +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:References:In-Reply-To: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:List-Owner; bh=FV7QmKKG3Uu2pRtNByHfP3YF0Mt3pQGQIH4IQrmU+fc=; b=r0nvrQWbARff6WhTpU1vNnJgL2 iU0Y+CxQ8txsBmdJibdwAT1SV9MMQo6lV732V5iBZqW7ujAzTv0dDIpc+ZU7oqTiWYmNLRucsTlPP +pDrY5SHU+H5wUh76ZhElu1Ct4bMOzSyAvP6gcVT7KbFdjmfEHHEMEEOll3a58TtAsayIBzhMHjcp dbwc+S4UTRSRbr0HT/+1aI02T6bfkqR8EJ8JhFYXGoLPEJjnPGvSveg9gM0Q4FjlQkahzUoIeOum4 LOnud47z1W8d/uAwDcQ43O7JoU8dTO0bmchG7MTKPvUlHi7B23Ttbv0NAZuZrtv6a/b2npPux0kJ9 euFPnmww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qpooX-00AWBg-27; Mon, 09 Oct 2023 11:52:45 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qpooT-00AW9w-26 for barebox@lists.infradead.org; Mon, 09 Oct 2023 11:52:43 +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 1qpooS-0001fq-F4; Mon, 09 Oct 2023 13:52:40 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qpooS-000P3V-20; Mon, 09 Oct 2023 13:52:40 +0200 Received: from afa by dude05.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qpooR-009nm9-3B; Mon, 09 Oct 2023 13:52:39 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 9 Oct 2023 13:52:37 +0200 Message-Id: <20231009115239.2291016-3-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231009115239.2291016-1-a.fatoum@pengutronix.de> References: <20231009115239.2291016-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231009_045241_695982_0CE0F806 X-CRM114-Status: UNSURE ( 9.41 ) 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=-4.9 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 3/5] lib: stackprot: improve error message on missing HWRNG 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) ERROR: no HWRNG available! WARNING: stackprot: proceeding without randomized stack protector Signed-off-by: Ahmad Fatoum --- lib/stackprot.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/lib/stackprot.c b/lib/stackprot.c index aa0e88603aae..c1cc19aadd09 100644 --- a/lib/stackprot.c +++ b/lib/stackprot.c @@ -1,5 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include + +#define pr_fmt(fmt) "stackprot: " fmt + +#include #include #include #include @@ -27,6 +30,11 @@ EXPORT_SYMBOL(__stack_chk_fail); static __no_stack_protector int stackprot_randomize_guard(void) { - return get_crypto_bytes(&__stack_chk_guard, sizeof(__stack_chk_guard)); + int ret; + + ret = get_crypto_bytes(&__stack_chk_guard, sizeof(__stack_chk_guard)); + if (ret) + pr_warn("proceeding without randomized stack protector\n"); + return 0; } late_initcall(stackprot_randomize_guard); -- 2.39.2