On Tue, Jan 18, 2022 at 06:48:47PM -0500, ckamas dslextreme.com wrote: > Greg, > > Thanks for the feedback. I will update the kernel to 5.16 and verify the crash there too. > > In the meantime, can you point me to where I can learn more about how these "stub" functions are generated? > > Thanks, > Chuck > > > > 0) + 14.167 us | stub_complete [usbip_host](); > ------------------------------------------ > 0) <idle>-0 => stub_tx-300 > ------------------------------------------ > > 0) | stub_send_ret_submit [usbip_host]() { > 0) 6.250 us | stub_free_priv_and_urb [usbip_host](); > 0) ! 130.781 us | } > 0) 7.135 us | stub_send_ret_unlink [usbip_host](); These are functions in the drivers/usb/usbip/stub_rx.c file.