From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52630) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cbIDs-0006Oq-LF for qemu-devel@nongnu.org; Tue, 07 Feb 2017 21:43:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cbIDp-0005mt-JZ for qemu-devel@nongnu.org; Tue, 07 Feb 2017 21:43:08 -0500 Received: from mail-ot0-x244.google.com ([2607:f8b0:4003:c0f::244]:36712) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cbIDp-0005mV-DS for qemu-devel@nongnu.org; Tue, 07 Feb 2017 21:43:05 -0500 Received: by mail-ot0-x244.google.com with SMTP id 36so16539863otx.3 for ; Tue, 07 Feb 2017 18:43:05 -0800 (PST) Message-ID: <589a85b8.3c2b9d0a.b8e6.1434@mx.google.com> From: Li Qiang Date: Tue, 7 Feb 2017 18:42:55 -0800 Subject: [Qemu-devel] [PATCH] usb: ehci: fix memory leak in ehci List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: kraxel@redhat.com, qemu-devel@nongnu.org Cc: Li Qiang From: Li Qiang In usb_ehci_init function, it initializes 's->ipacket', but there is no corresponding function to free this. As the ehci can be hotplug and unplug, this will leak host memory leak. In order to make the hierarchy clean, we should add a ehci pci finalize function, then call the clean function in ehci device. Signed-off-by: Li Qiang --- hw/usb/hcd-ehci-pci.c | 9 +++++++++ hw/usb/hcd-ehci.c | 5 +++++ hw/usb/hcd-ehci.h | 1 + 3 files changed, 15 insertions(+) diff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c index 5657705..6dedcb8 100644 --- a/hw/usb/hcd-ehci-pci.c +++ b/hw/usb/hcd-ehci-pci.c @@ -89,6 +89,14 @@ static void usb_ehci_pci_init(Object *obj) usb_ehci_init(s, DEVICE(obj)); } +static void usb_ehci_pci_finalize(Object *obj) +{ + EHCIPCIState *i = PCI_EHCI(obj); + EHCIState *s = &i->ehci; + + usb_ehci_finalize(s); +} + static void usb_ehci_pci_exit(PCIDevice *dev) { EHCIPCIState *i = PCI_EHCI(dev); @@ -159,6 +167,7 @@ static const TypeInfo ehci_pci_type_info = { .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(EHCIPCIState), .instance_init = usb_ehci_pci_init, + .instance_finalize = usb_ehci_pci_finalize, .abstract = true, .class_init = ehci_class_init, }; diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index 7622a3a..50ef817 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -2545,6 +2545,11 @@ void usb_ehci_init(EHCIState *s, DeviceState *dev) &s->mem_ports); } +void usb_ehci_finalize(EHCIState *s) +{ + usb_packet_cleanup(&s->ipacket); +} + /* * vim: expandtab ts=4 */ diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h index 3fd7038..938d8aa 100644 --- a/hw/usb/hcd-ehci.h +++ b/hw/usb/hcd-ehci.h @@ -323,6 +323,7 @@ struct EHCIState { extern const VMStateDescription vmstate_ehci; void usb_ehci_init(EHCIState *s, DeviceState *dev); +void usb_ehci_finalize(EHCIState *s); void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp); void usb_ehci_unrealize(EHCIState *s, DeviceState *dev, Error **errp); void ehci_reset(void *opaque); -- 1.8.3.1