From patchwork Mon Feb 1 19:33:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 1434290 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4DTymX071vz9t56 for ; Tue, 2 Feb 2021 06:33:45 +1100 (AEDT) Received: from localhost ([::1]:48264 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6exB-0000rN-Qn for incoming@patchwork.ozlabs.org; Mon, 01 Feb 2021 14:33:41 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48392) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6ewm-0000pE-SS for qemu-devel@nongnu.org; Mon, 01 Feb 2021 14:33:16 -0500 Received: from us-smtp-delivery-44.mimecast.com ([207.211.30.44]:43191) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l6ewl-0003Vh-CT for qemu-devel@nongnu.org; Mon, 01 Feb 2021 14:33:16 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-471-28aHCayyOOmVWA_a4A9T1A-1; Mon, 01 Feb 2021 14:33:12 -0500 X-MC-Unique: 28aHCayyOOmVWA_a4A9T1A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E7278B8105; Mon, 1 Feb 2021 19:33:10 +0000 (UTC) Received: from bahia.redhat.com (ovpn-113-184.ams2.redhat.com [10.36.113.184]) by smtp.corp.redhat.com (Postfix) with ESMTP id DD9131001281; Mon, 1 Feb 2021 19:33:06 +0000 (UTC) From: Greg Kurz To: qemu-devel@nongnu.org Subject: [PATCH] virtiofsd: Add restart_syscall to the seccomp whitelist Date: Mon, 1 Feb 2021 20:33:05 +0100 Message-Id: <20210201193305.136390-1-groug@kaod.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=207.211.30.44; envelope-from=groug@kaod.org; helo=us-smtp-delivery-44.mimecast.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Dr. David Alan Gilbert" , Stefan Hajnoczi , Greg Kurz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This is how linux restarts some system calls after SIGSTOP/SIGCONT. This is needed to avoid virtiofsd termination when resuming execution under GDB for example. Signed-off-by: Greg Kurz Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Stefan Hajnoczi --- This has passed Travis and gitlab CI without errors. tools/virtiofsd/passthrough_seccomp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/virtiofsd/passthrough_seccomp.c b/tools/virtiofsd/passthrough_seccomp.c index a60d7da4b4e2..da03e97d35e4 100644 --- a/tools/virtiofsd/passthrough_seccomp.c +++ b/tools/virtiofsd/passthrough_seccomp.c @@ -88,6 +88,7 @@ static const int syscall_whitelist[] = { SCMP_SYS(renameat), SCMP_SYS(renameat2), SCMP_SYS(removexattr), + SCMP_SYS(restart_syscall), SCMP_SYS(rt_sigaction), SCMP_SYS(rt_sigprocmask), SCMP_SYS(rt_sigreturn),