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Mon, 02 Dec 2019 20:45:39 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:2270 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ibxFw-0005TO-1a for qemu-devel@nongnu.org; Mon, 02 Dec 2019 20:45:36 -0500 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id CDF67252FDA05411EEDC; Tue, 3 Dec 2019 09:45:24 +0800 (CST) Received: from HGHY2P002143101.china.huawei.com (10.184.39.213) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.439.0; Tue, 3 Dec 2019 09:45:17 +0800 From: To: Subject: [PATCH] virtio-balloon: fix memory leak while attach virtio-balloon device Date: Tue, 3 Dec 2019 09:44:19 +0800 Message-ID: <1575337459-34864-1-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: 45.249.212.191 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, kuhn.chenqun@huawei.com, PanNengyuan , qemu-devel@nongnu.org, zhang.zhanghailiang@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: PanNengyuan ivq/dvq/svq/free_page_vq is forgot to cleanup in virtio_balloon_device_unrealize, the memory leak stack is as follow: Direct leak of 14336 byte(s) in 2 object(s) allocated from: #0 0x7f99fd9d8560 in calloc (/usr/lib64/libasan.so.3+0xc7560) #1 0x7f99fcb20015 in g_malloc0 (/usr/lib64/libglib-2.0.so.0+0x50015) #2 0x557d90638437 in virtio_add_queue /mnt/sdb/qemu-4.2.0-rc0/hw/virtio= /virtio.c:2327 #3 0x557d9064401d in virtio_balloon_device_realize /mnt/sdb/qemu-4.2.0-= rc0/hw/virtio/virtio-balloon.c:793 #4 0x557d906356f7 in virtio_device_realize /mnt/sdb/qemu-4.2.0-rc0/hw/v= irtio/virtio.c:3504 #5 0x557d9073f081 in device_set_realized /mnt/sdb/qemu-4.2.0-rc0/hw/cor= e/qdev.c:876 #6 0x557d908b1f4d in property_set_bool /mnt/sdb/qemu-4.2.0-rc0/qom/obje= ct.c:2080 #7 0x557d908b655e in object_property_set_qobject /mnt/sdb/qemu-4.2.0-rc= 0/qom/qom-qobject.c:26 Reported-by: Euler Robot Signed-off-by: PanNengyuan --- hw/virtio/virtio-balloon.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 40b04f5..5329c65 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -831,6 +831,13 @@ static void virtio_balloon_device_unrealize(DeviceStat= e *dev, Error **errp) } balloon_stats_destroy_timer(s); qemu_remove_balloon_handler(s); + + virtio_del_queue(vdev, 0); + virtio_del_queue(vdev, 1); + virtio_del_queue(vdev, 2); + if (s->free_page_vq) { + virtio_del_queue(vdev, 3); + } virtio_cleanup(vdev); } =20 --=20 2.7.2.windows.1