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[Qemu-devel] [PATCH 05/14] usb-linux: Refuse iso packets when max packet
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 05/14] usb-linux: Refuse iso packets when max packet size is 0 (alt setting 0) |
Date: |
Wed, 4 May 2011 17:41:39 +0200 |
From: Hans de Goede <address@hidden>
Refuse iso usb packets when then max packet size for the endpoint is 0,
this avoids an abort in usb_host_alloc_iso() caused by trying to qemu_malloc
a 0 bytes large buffer.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
usb-linux.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/usb-linux.c b/usb-linux.c
index 6aef7a5..4c42fe1 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -549,7 +549,11 @@ static int urb_status_to_usb_ret(int status)
static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p)
{
AsyncURB *aurb;
- int i, j, ret, len = 0;
+ int i, j, ret, max_packet_size, len = 0;
+
+ max_packet_size = get_max_packet_size(s, p->devep);
+ if (max_packet_size == 0)
+ return USB_RET_NAK;
aurb = get_iso_urb(s, p->devep);
if (!aurb) {
--
1.7.1
- [Qemu-devel] [PULL] usb patch queue, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 01/14] usb-linux: introduce a usb_linux_alt_setting function, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 02/14] usb-linux: Get the alt. setting from sysfs rather then asking the dev, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 07/14] usb-linux: Add support for buffering iso out usb packets, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 03/14] usb-linux: Add support for buffering iso usb packets, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 11/14] ohci: get ohci state via container_of(), Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 06/14] usb-linux: We only need to keep track of 15 endpoints, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 04/14] usb-linux: Refuse packets for endpoints which are not in the usb descriptor, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 05/14] usb-linux: Refuse iso packets when max packet size is 0 (alt setting 0),
Gerd Hoffmann <=
- [Qemu-devel] [PATCH 10/14] uhci: keep uhci state pointer in async packet struct., Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 08/14] usb: control buffer fixes, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 12/14] musb: get musb state via container_of(), Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 14/14] usb: mass storage fix, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 13/14] usb: move complete callback to port ops, Gerd Hoffmann, 2011/05/04
- [Qemu-devel] [PATCH 09/14] uhci: switch to QTAILQ, Gerd Hoffmann, 2011/05/04
- Re: [Qemu-devel] [PULL] usb patch queue, Anthony Liguori, 2011/05/05