On Sat, Mar 5, 2016 at 2:00 AM, Andrey Konovalov <andreyknvl@xxxxxxxxx> wrote:
> On Sat, Mar 5, 2016 at 1:42 AM, Oliver Neukum <oneukum@xxxxxxx> wrote:
>> On Sat, 2016-03-05 at 01:26 +0300, Andrey Konovalov wrote:
>>> and when I run the vm and connect the device I get:
>>>
>>> [ 23.672662] cdc_ncm 1-1:1.6: bind() failure
>>> [ 23.673447] usbnet_probe(): freeing netdev: ffff88006ab48000
>>> [ 23.675822] usbnet_probe(): freeing netdev: ffff88006ab48000
>>>
>>> So this seems to be a double-free (or at least a double free_netdev()
>>> call), but the object gets freed twice from usbnet_probe() and not
>>> from usbnet_disconnect(), so you're right that the latter doesn't get
>>> called. I'm not sure how usbnet_probe() ends up being called twice.
>>
>> Do you have lsusb?
>
> You mean inside the vm?
> I do.
Or did you want the faulty device descriptor itself?
I used this:
Speed High
Bus 004 Device 003: ID 0bdb:1911
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 371
bNumInterfaces 11
bConfigurationValue 1
iConfiguration 4
bmAttributes 0xe0
Self Powered
Remote Wakeup
bMaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 6
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 13
bInterfaceProtocol 0
iInterface 11
>
>>
>> Regards
>> Oliver
>>
>>
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