From patchwork Fri May 17 13:47:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 10948001 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05C2A1390 for ; Fri, 17 May 2019 13:52:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA21B27F88 for ; Fri, 17 May 2019 13:52:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE02627F92; Fri, 17 May 2019 13:52:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 82BBF27F94 for ; Fri, 17 May 2019 13:52:13 +0000 (UTC) Received: from localhost ([127.0.0.1]:49000 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hRdHQ-0003Kl-NS for patchwork-qemu-devel@patchwork.kernel.org; Fri, 17 May 2019 09:52:12 -0400 Received: from eggs.gnu.org ([209.51.188.92]:35667) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hRdDU-0008St-8F for qemu-devel@nongnu.org; Fri, 17 May 2019 09:48:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hRdDS-0003Xo-AH for qemu-devel@nongnu.org; Fri, 17 May 2019 09:48:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43022) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hRdDQ-0003Vv-Im for qemu-devel@nongnu.org; Fri, 17 May 2019 09:48:06 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CDC4DC0A4F49 for ; Fri, 17 May 2019 13:47:58 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-116-83.ams2.redhat.com [10.36.116.83]) by smtp.corp.redhat.com (Postfix) with ESMTP id 91CB37A463; Fri, 17 May 2019 13:47:57 +0000 (UTC) From: Stefano Garzarella To: qemu-devel@nongnu.org Date: Fri, 17 May 2019 15:47:45 +0200 Message-Id: <20190517134748.340381-2-sgarzare@redhat.com> In-Reply-To: <20190517134748.340381-1-sgarzare@redhat.com> References: <20190517134748.340381-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 17 May 2019 13:47:58 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v3 1/4] net: fix assertion failure when ipv6-prefixlen is not a number X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , Markus Armbruster Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP If 'ipv6-prefixlen' is not a number, the current behaviour produces an assertion failure: $ qemu-system-x86_64 -net user,ipv6-net=feca::0/a qemu-system-x86_64: qemu/util/qemu-option.c:1175: qemu_opts_foreach: Assertion `!errp || !*errp' failed. Aborted (core dumped) This patch fixes it, jumping to the end of the function when 'ipv6-prefixlen' is not a number, and printing the more friendly message: $ qemu-system-x86_64 -net user,ipv6-net=feca::0/a qemu-system-x86_64: Parameter 'ipv6-prefixlen' expects a number Signed-off-by: Stefano Garzarella Reviewed-by: Markus Armbruster --- net/net.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/net/net.c b/net/net.c index 2cf5e76469..555504a404 100644 --- a/net/net.c +++ b/net/net.c @@ -1135,11 +1135,11 @@ static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) if (err) { error_setg(errp, QERR_INVALID_PARAMETER_VALUE, - "ipv6-prefix", "a number"); - } else { - qemu_opt_set_number(opts, "ipv6-prefixlen", len, - &error_abort); + "ipv6-prefixlen", "a number"); + goto out; } + + qemu_opt_set_number(opts, "ipv6-prefixlen", len, &error_abort); } qemu_opt_unset(opts, "ipv6-net"); } @@ -1161,6 +1161,7 @@ static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) qapi_free_NetLegacy(object); } +out: error_propagate(errp, err); visit_free(v); return ret;