Re: ax88179_178a: ethernet to usb dongle disconnect crash

On Mon, Jun 22, 2015 at 04:09:05PM +0530, Vivek Bhagat wrote:

Hello Greg,

Please find comments inline below-

On Jun 17, 2015 6:23 PM, "Greg KH" [off-list ref] wrote:

quoted

On Wed, Jun 17, 2015 at 10:31:40AM +0530, Vivek Bhagat wrote:

quoted

Hi All,

I have connected my pc and TV board as below -

PC (network i/f) <----> ethernet to usb dongle <---> usb port of TV board

When I power off  my board, i get a kernel crash.
Please have a look at log attached here.I debug and found that
unregister_netdev() in usbnet_disconnect() clears net_device object
and still skb is under processing which tries to access net_device
object and leads to crash.

quoted

3.10 is really old, please try something more "modern" like 4.0 at the
very least to see if the issue is still there.

Our linux 3.10 is having all patches included from stable version 4.0.

I doubt that.  Otherwise it would just be 4.0 :)

Due to integration issue i can not replace vanilla 4.0 kernel in my setup.

Then you are stuck getting support from the company that is forcing you
to stick with that kernel version, sorry but the community can not help
you out here.

best of luck,

greg k-h