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 783DCC25B75 for ; Mon, 13 May 2024 11:22:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s6TlC-0007SS-Oh; Mon, 13 May 2024 07:22:26 -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 1s6TlB-0007SH-JM for qemu-devel@nongnu.org; Mon, 13 May 2024 07:22:25 -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 1s6Tl8-00071M-TG for qemu-devel@nongnu.org; Mon, 13 May 2024 07:22:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1715599341; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ykJV2L5P6auBvKRf7YWFmKzOqvHyFSYlGc1LbiLhyk8=; b=hUQ8OQpi07+dhyliYA1u1PFkNn2/v60c04KAfs6XGFtn+1+cZ7wdqem6pixfpTte3OtD/q pFIE9xhvTg7XVI1WMqMh/3h7xsA3ep94fyr85afPPmaesGRJedbR1ee/UPxCcTjZiSm493 0uKcjClF9l8njbKnG5d/oRZGen3CTqA= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-655--2Kjd2KrMDy7cpvXqyY18w-1; Mon, 13 May 2024 07:22:17 -0400 X-MC-Unique: -2Kjd2KrMDy7cpvXqyY18w-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 72A3180021D; Mon, 13 May 2024 11:22:17 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.55]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BBCFD40004B; Mon, 13 May 2024 11:22:14 +0000 (UTC) Date: Mon, 13 May 2024 12:22:11 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: qemu-devel@nongnu.org Cc: Alex =?utf-8?Q?Benn=C3=A9e?= , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Thomas Huth , Wainer dos Santos Moschetta , Beraldo Leal Subject: Re: [PATCH 3/3] gitlab: use 'setarch -R' to workaround tsan bug Message-ID: References: <20240513111551.488088-1-berrange@redhat.com> <20240513111551.488088-4-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20240513111551.488088-4-berrange@redhat.com> User-Agent: Mutt/2.2.12 (2023-09-09) X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 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: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.974, 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_H4=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 Mon, May 13, 2024 at 12:15:51PM +0100, Daniel P. Berrangé wrote: > The TSAN job started failing when gitlab rolled out their latest > release. The root cause is a change in the Google COS version used > on shared runners. This brings a kernel running with > > vm.mmap_rnd_bits = 31 > > which is incompatible with TSAN in LLVM < 18, which only supports > upto '28'. LLVM 18 can support upto '30', and failing that will > re-exec itself to turn off VA randomization. > > Our LLVM is too old for now, but we can run with 'setarch -R make ..' > to turn off VA randomization ourselves. > > Signed-off-by: Daniel P. Berrangé > --- > .gitlab-ci.d/buildtest.yml | 3 +++ > 1 file changed, 3 insertions(+) Example job showing this working: https://gitlab.com/berrange/qemu/-/jobs/6824465594 > > diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml > index bab6194564..d864562628 100644 > --- a/.gitlab-ci.d/buildtest.yml > +++ b/.gitlab-ci.d/buildtest.yml > @@ -575,6 +575,9 @@ tsan-build: > CONFIGURE_ARGS: --enable-tsan --cc=clang --cxx=clang++ > --enable-trace-backends=ust --disable-slirp > TARGETS: x86_64-softmmu ppc64-softmmu riscv64-softmmu x86_64-linux-user > + # Remove when we switch to a distro with clang >= 18 > + # https://github.com/google/sanitizers/issues/1716 > + MAKE: setarch -R make > > # gcov is a GCC features > gcov: > -- > 2.43.0 > 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 :|