From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BE8FC5479D for ; Wed, 11 Jan 2023 14:16:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233438AbjAKOQ1 (ORCPT ); Wed, 11 Jan 2023 09:16:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238931AbjAKOQI (ORCPT ); Wed, 11 Jan 2023 09:16:08 -0500 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6301B7FC; Wed, 11 Jan 2023 06:15:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=13MEdz4iJ2vVIT4qZus8tp4KQdEvpmtZcNgcvXYg/50=; b=q0Un1ViVqDfyyC7buQJ07rIqiv geVf1FTDEIhq4vUURyUkBDlR3Mxa5uoQebA3cfEMpIfUIwm3p9/O+UW7hu5oS4OMF0lXeRT/wo1CA JNJqS2ARU35yr+kKdoXSh6EytPa0KfE1txGfG9ADArHwPM5YlwcKZ/Q62vcmr1xQnU7fvxiE2j/oh KkqjhAkiRch2wzOJ1/lTsKcSD0zA9z3dvEWwVX68ux88Rm/7vI8CEmKUvSnJBEJtvpR6fxOp5aL8z //TmY1nYmzCyz6qgtoaaq35eYO+5IbWKDw+R+5z4ktyGmABzb0qUznZbJ5hjYdgs/K+7Dh1TjU/y7 wJRvLlAA==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1pFbt7-003hbQ-1c; Wed, 11 Jan 2023 14:15:33 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 2BB9A300129; Wed, 11 Jan 2023 15:15:40 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 14DED2CA1DB41; Wed, 11 Jan 2023 15:15:40 +0100 (CET) Date: Wed, 11 Jan 2023 15:15:39 +0100 From: Peter Zijlstra To: Nathan Chancellor Cc: Mathieu Desnoyers , linux-kernel@vger.kernel.org, Thomas Gleixner , "Paul E . McKenney" , Boqun Feng , "H . Peter Anvin" , Paul Turner , linux-api@vger.kernel.org, Christian Brauner , Florian Weimer , David.Laight@aculab.com, carlos@redhat.com, Peter Oskolkov , Alexander Mikhalitsyn , Chris Kennelly Subject: Re: [RFC PATCH tip] rseq: Fix: Increase AT_VECTOR_SIZE_BASE to match rseq auxvec entries Message-ID: References: <20230104192054.34046-1-mathieu.desnoyers@efficios.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org On Wed, Jan 04, 2023 at 12:24:09PM -0700, Nathan Chancellor wrote: > On Wed, Jan 04, 2023 at 02:20:54PM -0500, Mathieu Desnoyers wrote: > > Two new auxiliary vector entries are introduced for rseq without > > matching increment of the AT_VECTOR_SIZE_BASE, which causes failures > > with CONFIG_HARDENED_USERCOPY=y. > > > > Reported-by: Nathan Chancellor > > Link: https://lore.kernel.org/r/Y7XJKZhuU9VJZQ11@dev-arch.thelio-3990X > > Fixes: 317c8194e6ae ("rseq: Introduce feature size and alignment ELF auxiliary vector entries") > > Signed-off-by: Mathieu Desnoyers > > This resolves the boot failure with the configuration I tested: > > Tested-by: Nathan Chancellor Thanks!