From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by sourceware.org (Postfix) with ESMTPS id 4B95E38330AB for ; Wed, 14 Dec 2022 09:04:27 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 4B95E38330AB Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 87B0E1FE27; Wed, 14 Dec 2022 09:04:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1671008666; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UqFq2Cc3cJA+PQGhrzHOD8SOBIYXY4JyRXbdWo1F2tY=; b=rVV68ROIUSCs7gIRfI6QTImq9Pb0xL38tNJXFHssCIZ2TNPtHmxzYjMIc1ERVMHQ94YwK1 +2DDI8sGarLFStx7SWLUeHUZ0nBOA3ma+iVKE/1WxSltYLUHvpODyzSt3IVZJRAc6QUglK kbF5ihQz4ZhzgQ3MEetqd2B4ga/zBs8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1671008666; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UqFq2Cc3cJA+PQGhrzHOD8SOBIYXY4JyRXbdWo1F2tY=; b=+N3+9z0sOdtw3KJpywpu0smQzLejjODSW1hJYFcsEyIiXgAiSfNugoXk+Lxf/VkIudNAHl ZB2SKSoNldom5pBg== Received: from hawking.suse.de (unknown [10.168.4.11]) by relay2.suse.de (Postfix) with ESMTP id 7D26E2C141; Wed, 14 Dec 2022 09:04:26 +0000 (UTC) Received: by hawking.suse.de (Postfix, from userid 17005) id 663E44401A7; Wed, 14 Dec 2022 10:04:26 +0100 (CET) From: Andreas Schwab To: Carlos O'Donell via Libc-alpha Cc: Noah Goldstein , Carlos O'Donell , hjl.tools@gmail.com, carlos@systemhalted.org Subject: Re: [PATCH v1] x86: Prevent SIG11 in memcmp-sse2 when data is concurrently modified [BZ #29863] References: <20221214001147.2814047-1-goldstein.w.n@gmail.com> <8dc9f68a-c736-0996-76f8-ab7aeb4ccc00@redhat.com> X-Yow: Can you MAIL a BEAN CAKE? Date: Wed, 14 Dec 2022 10:04:26 +0100 In-Reply-To: <8dc9f68a-c736-0996-76f8-ab7aeb4ccc00@redhat.com> (Carlos O'Donell via Libc-alpha's message of "Tue, 13 Dec 2022 21:41:36 -0500") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-3.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Dez 13 2022, Carlos O'Donell via Libc-alpha wrote: > Please post a v2. Thanks! > > Subject: x86: Prevent SIGSEGV in memcmp-sse2 when data is concurrently modified [BZ #29863] > > Replaces SIG11 with SIGSEGV (the documented name of the signal). Even better: out-of-bounds access (which can manifest in multitude of different ways). -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."