From patchwork Tue Nov 26 08:17:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pan Nengyuan X-Patchwork-Id: 11261605 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4BB151393 for ; Tue, 26 Nov 2019 08:18:11 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2BC352075C for ; Tue, 26 Nov 2019 08:18:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2BC352075C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:51244 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZW2z-00048d-F5 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 26 Nov 2019 03:18:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:44369) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZW2R-0003iZ-Nn for qemu-devel@nongnu.org; Tue, 26 Nov 2019 03:17:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iZW2Q-0005Jl-NP for qemu-devel@nongnu.org; Tue, 26 Nov 2019 03:17:35 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:42934 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iZW2O-0005HL-3D; Tue, 26 Nov 2019 03:17:32 -0500 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id EF58A27935F99949E3CD; Tue, 26 Nov 2019 16:17:26 +0800 (CST) Received: from HGHY2P002143101.china.huawei.com (10.184.39.213) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.439.0; Tue, 26 Nov 2019 16:17:19 +0800 From: To: , , Subject: [PATCH] throttle-groups: fix memory leak in throttle_group_set_limits Date: Tue, 26 Nov 2019 16:17:02 +0800 Message-ID: <1574756222-43976-1-git-send-email-pannengyuan@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.184.39.213] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 45.249.212.32 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: liyiting@huawei.com, zhang.zhanghailiang@huawei.com, qemu-block@nongnu.org, PanNengyuan , qemu-devel@nongnu.org, kuhn.chenqun@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: PanNengyuan This avoid a memory leak when qom-set is called to set throttle_group limits, here is an easy way to reproduce: 1. run qemu-iotests as follow and check the result with asan: ./check -qcow2 184 Following is the asan output backtrack: Direct leak of 912 byte(s) in 3 object(s) allocated from: #0 0xffff8d7ab3c3 in __interceptor_calloc (/lib64/libasan.so.4+0xd33c3) #1 0xffff8d4c31cb in g_malloc0 (/lib64/libglib-2.0.so.0+0x571cb) #2 0x190c857 in qobject_input_start_struct /mnt/sdc/qemu-master/qemu-4.2.0-rc0/qapi/qobject-input-visitor.c:295 #3 0x19070df in visit_start_struct /mnt/sdc/qemu-master/qemu-4.2.0-rc0/qapi/qapi-visit-core.c:49 #4 0x1948b87 in visit_type_ThrottleLimits qapi/qapi-visit-block-core.c:3759 #5 0x17e4aa3 in throttle_group_set_limits /mnt/sdc/qemu-master/qemu-4.2.0-rc0/block/throttle-groups.c:900 #6 0x1650eff in object_property_set /mnt/sdc/qemu-master/qemu-4.2.0-rc0/qom/object.c:1272 #7 0x1658517 in object_property_set_qobject /mnt/sdc/qemu-master/qemu-4.2.0-rc0/qom/qom-qobject.c:26 #8 0x15880bb in qmp_qom_set /mnt/sdc/qemu-master/qemu-4.2.0-rc0/qom/qom-qmp-cmds.c:74 #9 0x157e3e3 in qmp_marshal_qom_set qapi/qapi-commands-qom.c:154 Reported-by: Euler Robot Signed-off-by: PanNengyuan --- block/throttle-groups.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/throttle-groups.c b/block/throttle-groups.c index 77014c7..88418e6 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -912,6 +912,7 @@ static void throttle_group_set_limits(Object *obj, Visitor *v, unlock: qemu_mutex_unlock(&tg->lock); ret: + qapi_free_ThrottleLimits(argp); error_propagate(errp, local_err); return; }