From: <pannengyuan@huawei.com> To: <mst@redhat.com> Cc: liyiting@huawei.com, kuhn.chenqun@huawei.com, Pan Nengyuan <pannengyuan@huawei.com>, qemu-devel@nongnu.org, zhang.zhanghailiang@huawei.com Subject: [PATCH v2 2/3] virtio-balloon: fix memory leak while attach virtio-balloon device Date: Wed, 4 Dec 2019 15:31:55 +0800 Message-ID: <1575444716-17632-2-git-send-email-pannengyuan@huawei.com> (raw) In-Reply-To: <1575444716-17632-1-git-send-email-pannengyuan@huawei.com> From: Pan Nengyuan <pannengyuan@huawei.com> 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 hw/virtio/virtio.c:2327 #3 0x557d9064401d in virtio_balloon_device_realize hw/virtio/virtio-balloon.c:793 #4 0x557d906356f7 in virtio_device_realize hw/virtio/virtio.c:3504 #5 0x557d9073f081 in device_set_realized hw/core/qdev.c:876 #6 0x557d908b1f4d in property_set_bool qom/object.c:2080 #7 0x557d908b655e in object_property_set_qobject qom/qom-qobject.c:26 Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> --- Change v2 to v1: - use virtio_delete_queue to cleanup vq through a vq pointer (suggested by Michael S. Tsirkin) --- 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..57f3b9f 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -831,6 +831,13 @@ static void virtio_balloon_device_unrealize(DeviceState *dev, Error **errp) } balloon_stats_destroy_timer(s); qemu_remove_balloon_handler(s); + + virtio_delete_queue(s->ivq); + virtio_delete_queue(s->dvq); + virtio_delete_queue(s->svq); + if (s->free_page_vq) { + virtio_delete_queue(s->free_page_vq); + } virtio_cleanup(vdev); } -- 2.7.2.windows.1
next prev parent reply index Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-12-04 7:31 [PATCH v2 1/3] virtio: add ability to delete vq through a pointer pannengyuan 2019-12-04 7:31 ` pannengyuan [this message] 2019-12-04 10:16 ` [PATCH v2 2/3] virtio-balloon: fix memory leak while attach virtio-balloon device Laurent Vivier 2019-12-04 7:31 ` [PATCH v2 3/3] virtio-serial-bus: fix memory leak while attach virtio-serial-bus pannengyuan 2019-12-04 10:17 ` Laurent Vivier 2019-12-04 14:41 ` Eric Blake 2019-12-09 16:51 ` Michael S. Tsirkin 2019-12-04 8:33 ` [PATCH v2 1/3] virtio: add ability to delete vq through a pointer Pankaj Gupta 2019-12-05 2:30 ` Pan Nengyuan 2019-12-05 4:51 ` Pankaj Gupta 2019-12-09 15:58 ` Michael S. Tsirkin 2019-12-04 9:40 ` Laurent Vivier 2019-12-04 14:40 ` Eric Blake 2019-12-05 2:35 ` Pan Nengyuan 2019-12-05 16:45 ` Amit Shah 2019-12-06 2:17 ` Pan Nengyuan 2019-12-06 8:56 ` Amit Shah 2019-12-06 9:00 ` Pan Nengyuan 2019-12-09 16:43 ` Michael S. Tsirkin 2019-12-09 16:58 ` Michael S. Tsirkin 2019-12-10 2:08 ` Pan Nengyuan
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