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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1C774C3DA61 for ; Wed, 24 Jul 2024 10:54:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sWZdT-0007HP-8j; Wed, 24 Jul 2024 06:54:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sWZdR-0007BX-NX for qemu-devel@nongnu.org; Wed, 24 Jul 2024 06:54:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sWZdQ-0006MP-0V for qemu-devel@nongnu.org; Wed, 24 Jul 2024 06:54:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721818455; h=from:from:reply-to:reply-to:subject:subject: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=LDM/6+3+mrngKGk9k71H+QyNC58BB+lJ2gTXEPTb+7M=; b=VyWpDTmK8fAWV3mzX7LJmXvzO660tgfLangCiIo91DQx6hWKarJJlxs0Py85W255m/YT+4 MLzA5RGX5Nts3uz3cdUMRHWNcM3xPmnsdScNfT7cCLbKMu+mzh9vJ6f/yQm/T5/If4IWow 5IPbsrt6t6xFMc5Oph4UcMGlDNOjHAg= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-455-xwaDt9ocMUuI2iO4gIhhOQ-1; Wed, 24 Jul 2024 06:52:50 -0400 X-MC-Unique: xwaDt9ocMUuI2iO4gIhhOQ-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 25D801955D4A; Wed, 24 Jul 2024 10:52:49 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.141]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 80FFE19560AA; Wed, 24 Jul 2024 10:52:46 +0000 (UTC) Date: Wed, 24 Jul 2024 11:52:42 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Richard Henderson Cc: qemu-devel@nongnu.org, thuth@redhat.com, alex.bennee@linaro.org Subject: Re: [PATCH] gitlab-ci: Use -fno-sanitize=function in the clang-user job Message-ID: References: <20240723232543.18093-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20240723232543.18093-1-richard.henderson@linaro.org> User-Agent: Mutt/2.2.12 (2023-09-09) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.133, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Wed, Jul 24, 2024 at 09:25:42AM +1000, Richard Henderson wrote: > With -fsanitize=undefined, which implies -fsanitize=function, > clang will add a "type signature" before functions. > It accesses funcptr-8 and funcptr-4 to do so. > > The generated TCG prologue is directly on a page boundary, > so these accesses segfault. > > Signed-off-by: Richard Henderson > --- > > Does anyone know why we're using --extra-cflags for the clang-user > and clang-system jobs, as opposed to --enable-sanitizers? It > certainly seems like regular users who use the normal configure > flag are going to run into this as well. > > Anyway, this is why the clang-user job is failing at the momemnt. > I can only assume that changes to our docker file, or upstream > distro updates have pulled in a new compiler version, because this > wasn't failing in this way last week. Logs show the clang version didn't change, but it is possible the libubsan.so package changed, but we can't see package versions. I've sent a series that will make it easier to compare pacakge versions between new & historical jobs in future situations like this: https://lists.nongnu.org/archive/html/qemu-devel/2024-07/msg05749.html With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|