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[79.183.34.164]) by smtp.gmail.com with ESMTPSA id g52sm19046718qta.58.2020.01.05.04.57.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2020 04:57:33 -0800 (PST) Date: Sun, 5 Jan 2020 07:57:30 -0500 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL v3 03/32] virtio-balloon: fix memory leak while attach virtio-balloon device Message-ID: <20200105125622.27231-4-mst@redhat.com> References: <20200105125622.27231-1-mst@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200105125622.27231-1-mst@redhat.com> X-Mailer: git-send-email 2.24.1.751.gd10ce2899c X-Mutt-Fcc: =sent X-MC-Unique: __2DBuQJN66emddeKSeiCw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Peter Maydell , David Hildenbrand , Pan Nengyuan , Euler Robot Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Pan Nengyuan 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-bal= loon.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 Signed-off-by: Pan Nengyuan Message-Id: <1575444716-17632-2-git-send-email-pannengyuan@huawei.com> Signed-off-by: Michael S. Tsirkin Reviewed-by: David Hildenbrand Reviewed-by: Michael S. Tsirkin Reviewed-by: David Hildenbrand --- 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 40b04f5180..57f3b9f22d 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_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); } =20 --=20 MST