From patchwork Fri Sep 8 01:35:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 13376952 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 6F8A5EC875E for ; Fri, 8 Sep 2023 01:37:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qeQPy-0008Qo-Vy; Thu, 07 Sep 2023 21:36:19 -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 1qeQPx-0008QZ-9v for qemu-devel@nongnu.org; Thu, 07 Sep 2023 21:36:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qeQPu-0007sr-A7 for qemu-devel@nongnu.org; Thu, 07 Sep 2023 21:36:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1694136973; h=from:from: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=h81esWg0ORmCPFztf/1p+Z2W1LI8v1JzfQWGinC7MR4=; b=AJG5bApGGzrZSpL41qxiWpbHGVu8qY/b6YGYCyPkvtJhcrdA9UV1NCEwkQeYXEGSkY36JC WohFy6Fkxm1/LJvyNzZmGIfbcrIE0jQ3PDhPiFqB/RFMfo0O3RjCV4XnGcQNOp4NDhMe3C /npUGZpuoEgQs2jGbXk28HfiQri/br0= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-152-kjh7oR6TOLmmqaCVcsTuQg-1; Thu, 07 Sep 2023 21:36:11 -0400 X-MC-Unique: kjh7oR6TOLmmqaCVcsTuQg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9485F1C07834 for ; Fri, 8 Sep 2023 01:36:11 +0000 (UTC) Received: from green.redhat.com (unknown [10.2.16.21]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3A24740C2070; Fri, 8 Sep 2023 01:36:11 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , =?utf-8?q?Daniel_P_=2E_Berrang?= =?utf-8?q?=C3=A9?= Subject: [PULL 04/13] io: check there are no qio_channel_yield() coroutines during ->finalize() Date: Thu, 7 Sep 2023 20:35:40 -0500 Message-ID: <20230908013535.990731-19-eblake@redhat.com> In-Reply-To: <20230908013535.990731-15-eblake@redhat.com> References: <20230908013535.990731-15-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Stefan Hajnoczi Callers must clean up their coroutines before calling object_unref(OBJECT(ioc)) to prevent an fd handler leak. Add an assertion to check this. This patch is preparation for the fd handler changes that follow. Signed-off-by: Stefan Hajnoczi Reviewed-by: Daniel P. Berrangé Reviewed-by: Eric Blake Message-ID: <20230830224802.493686-4-stefanha@redhat.com> Signed-off-by: Eric Blake --- io/channel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/io/channel.c b/io/channel.c index 72f0066af55..c415f3fc885 100644 --- a/io/channel.c +++ b/io/channel.c @@ -653,6 +653,10 @@ static void qio_channel_finalize(Object *obj) { QIOChannel *ioc = QIO_CHANNEL(obj); + /* Must not have coroutines in qio_channel_yield() */ + assert(!ioc->read_coroutine); + assert(!ioc->write_coroutine); + g_free(ioc->name); #ifdef _WIN32