From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 13 Dec 2022 09:42:44 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) 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 1p50s8-002RfQ-Ch for lore@lore.pengutronix.de; Tue, 13 Dec 2022 09:42:44 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p50s7-00083a-OI for lore@pengutronix.de; Tue, 13 Dec 2022 09:42:44 +0100 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:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UsoFDLq4RYhHQDCW+/qqxwajpaqIJlSjQy1F+sEGgwM=; b=oVLWgNDM6qzWYyw84Fj8RzpXyz kl+Cx2P9Vj+phYwtx6JBxJtpN9wa2kDv4PdxO9jNVUxBpIJq4XXDsVVYpdec8qzfv5V6eFwMBYlVJ mDKliRwbnpZqqAIxkAd7cJrstuDDjxZ9Oz441aimyhNXVW6clFez7FHmUW/l6MTn5u6+/vdosSCb5 FRTuk8BIUnXTrZo0rnXwLNCSLekj759i3s2eh4ICiDkfS4vaxVb7cAjZ89hutbtjEqXSaKDHCtC2y qSNctUX8cxDHDUfC0hkfZOhhLTDGnETInSCZqXwAszOdzHc6nClJ3A5uHWh/ZJIJj+No9JvZLPyIn B3jw5Odw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p50qO-00E0SH-E5; Tue, 13 Dec 2022 08:40:56 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p50mv-00DyL8-0O for barebox@lists.infradead.org; Tue, 13 Dec 2022 08:37:23 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p50mr-0007Km-Mm; Tue, 13 Dec 2022 09:37:17 +0100 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1p50mr-0005Ts-FP; Tue, 13 Dec 2022 09:37:17 +0100 Date: Tue, 13 Dec 2022 09:37:17 +0100 To: Ahmad Fatoum Cc: barebox@lists.infradead.org Message-ID: <20221213083717.GO29728@pengutronix.de> References: <20221212163907.2356192-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221212163907.2356192-1-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221213_003721_099836_7006591C X-CRM114-Status: GOOD ( 18.08 ) 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.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 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: Re: [PATCH master 1/2] KASan: test_kasan: silence warning with newer GCC X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Mon, Dec 12, 2022 at 05:39:06PM +0100, Ahmad Fatoum wrote: > Newer GCC will rightly complain about this being an out-of-bounds > access. This is intended as the kasan command is meant to cause > out-of-bounds accesses to test proper operation of KASan. > > Thus silence the warning for this specific instance. > > Signed-off-by: Ahmad Fatoum > --- > lib/kasan/test_kasan.c | 2 ++ > 1 file changed, 2 insertions(+) Applied, thanks Sascha > > diff --git a/lib/kasan/test_kasan.c b/lib/kasan/test_kasan.c > index d0ea91547711..14511cdb80bd 100644 > --- a/lib/kasan/test_kasan.c > +++ b/lib/kasan/test_kasan.c > @@ -290,6 +290,8 @@ static noinline void kasan_alloca_oob_left(void) > char alloca_array[i]; > char *p = alloca_array - 1; > > + OPTIMIZER_HIDE_VAR(p); > + > pr_info("out-of-bounds to left on alloca\n"); > *(volatile char *)p; > } > -- > 2.30.2 > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |