On 2/3/22 09:54, Greg Kroah-Hartman wrote:
On Thu, Feb 03, 2022 at 01:41:11AM +0100, Philipp Hortmann wrote:
I managed to get a device vt6656 (USB WiFi adapter). The device works OK when the computer is started and driver loaded. When the WLAN is disabled the system freezes often.
I am using ubuntu 20.04 with kernel 5.17.0-rc1 x86_64 branch: staging-testing
After some tries I found out that it is a function in vnt_stop() main_usb.c with the following line that is causing this. usb_kill_urb(priv→interrupt_urb); But this memory is after this line still in use.
What "memory" do you mean?
They are calling usb_kill_urb(priv→interrupt_urb); while using priv→interrupt_urb and maybe also starting new usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC); Thanks for your quick answer. Bye Philipp