From patchwork Tue Aug 29 16:06:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 1827320 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=e+mEl5vC; dkim-atps=neutral Authentication-Results: legolas.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=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RZslR2qvBz1yhC for ; Wed, 30 Aug 2023 02:07:47 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qb1Em-00079d-Jd; Tue, 29 Aug 2023 12:06:40 -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 1qb1El-000793-7Y for qemu-devel@nongnu.org; Tue, 29 Aug 2023 12:06:39 -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 1qb1Ej-0002iy-8S for qemu-devel@nongnu.org; Tue, 29 Aug 2023 12:06:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1693325196; 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=Rje/ITqNXJ/6Ru0HFlJBMqtFHqIeokN2njMddGzffg8=; b=e+mEl5vCzNoHbXdNvm6YsumkXp8hpr3CvobyYtd2KkYka9UGLZNIlGoWdmQLKQSX0cRGpZ amwd/bSU64DHrZlCeCIhg+DKNIcdyNkn7U6VYi31VbdIA694/02VoVW8GQsktzQEz3h/fn 9RaSsVnHV2ZAFKuAT16xs2+gVL6geTU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-145-2w300XchNzu5GiC43VQBoQ-1; Tue, 29 Aug 2023 12:06:34 -0400 X-MC-Unique: 2w300XchNzu5GiC43VQBoQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 09815803E2E; Tue, 29 Aug 2023 16:06:33 +0000 (UTC) Received: from localhost (unknown [10.39.195.33]) by smtp.corp.redhat.com (Postfix) with ESMTP id 83812492C13; Tue, 29 Aug 2023 16:06:32 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Cc: Leonardo Bras , eblake@redhat.com, =?utf-8?q?Daniel_?= =?utf-8?q?P=2E_Berrang=C3=A9?= , farosas@suse.de, kwolf@redhat.com, Peter Xu , Paolo Bonzini , Vladimir Sementsov-Ogievskiy , Juan Quintela , qemu-block@nongnu.org, Coiby Xu , Fam Zheng , Hanna Reitz , Stefan Hajnoczi Subject: [PATCH v2 3/4] io: check there are no qio_channel_yield() coroutines during ->finalize() Date: Tue, 29 Aug 2023 12:06:21 -0400 Message-ID: <20230829160623.277411-4-stefanha@redhat.com> In-Reply-To: <20230829160623.277411-1-stefanha@redhat.com> References: <20230829160623.277411-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=stefanha@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_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: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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 --- io/channel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/io/channel.c b/io/channel.c index 72f0066af5..c415f3fc88 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