From patchwork Fri Mar 27 04:56:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pan Nengyuan X-Patchwork-Id: 11461623 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 D738C15AB for ; Fri, 27 Mar 2020 04:43:06 +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 B80F720705 for ; Fri, 27 Mar 2020 04:43:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B80F720705 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]:36972 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHgpl-0003wY-TY for patchwork-qemu-devel@patchwork.kernel.org; Fri, 27 Mar 2020 00:43:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38904) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHgnr-0001hf-Ep for qemu-devel@nongnu.org; Fri, 27 Mar 2020 00:41:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jHgnq-0003JM-Dn for qemu-devel@nongnu.org; Fri, 27 Mar 2020 00:41:07 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:43140 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jHgnn-00036O-QM; Fri, 27 Mar 2020 00:41:04 -0400 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 487A8CDB59A613E1A6EC; Fri, 27 Mar 2020 12:40:58 +0800 (CST) Received: from localhost.huawei.com (10.175.104.216) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.487.0; Fri, 27 Mar 2020 12:40:50 +0800 From: Pan Nengyuan To: Subject: [PATCH v2 1/2] virtio-blk: delete vqs on the error path in realize() Date: Fri, 27 Mar 2020 12:56:19 +0800 Message-ID: <20200327045620.9082-2-pannengyuan@huawei.com> X-Mailer: git-send-email 2.18.2 In-Reply-To: <20200327045620.9082-1-pannengyuan@huawei.com> References: <20200327045620.9082-1-pannengyuan@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.104.216] 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: Kevin Wolf , zhang.zhanghailiang@huawei.com, qemu-block@nongnu.org, mst@redhat.com, Pan Nengyuan , Max Reitz , Stefan Hajnoczi , euler.robot@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" virtio_vqs forgot to free on the error path in realize(). Fix that. The asan stack: Direct leak of 14336 byte(s) in 1 object(s) allocated from: #0 0x7f58b93fd970 in __interceptor_calloc (/lib64/libasan.so.5+0xef970) #1 0x7f58b858249d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5249d) #2 0x5562cc627f49 in virtio_add_queue /mnt/sdb/qemu/hw/virtio/virtio.c:2413 #3 0x5562cc4b524a in virtio_blk_device_realize /mnt/sdb/qemu/hw/block/virtio-blk.c:1202 #4 0x5562cc613050 in virtio_device_realize /mnt/sdb/qemu/hw/virtio/virtio.c:3615 #5 0x5562ccb7a568 in device_set_realized /mnt/sdb/qemu/hw/core/qdev.c:891 #6 0x5562cd39cd45 in property_set_bool /mnt/sdb/qemu/qom/object.c:2238 Reported-by: Euler Robot Signed-off-by: Pan Nengyuan Reviewed-by: Stefano Garzarella --- v2->v1: - Fix incorrect free in v1, it will cause a uaf. --- Cc: Stefan Hajnoczi Cc: Kevin Wolf Cc: Max Reitz Cc: qemu-block@nongnu.org --- hw/block/virtio-blk.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 142863a3b2..97ba8a2187 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -1204,6 +1204,9 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp) virtio_blk_data_plane_create(vdev, conf, &s->dataplane, &err); if (err != NULL) { error_propagate(errp, err); + for (i = 0; i < conf->num_queues; i++) { + virtio_del_queue(vdev, i); + } virtio_cleanup(vdev); return; }