On Tue, Feb 19, 2019 at 11:08:57AM +0100, Bernard Metzler wrote: > +void siw_umem_release(struct siw_umem *umem) > +{ > + struct task_struct *task = get_pid_task(umem->pid, PIDTYPE_PID); > + int i, num_pages = umem->num_pages; This is copying some old version of umem, copy the new version please. Shouldn't need to mess with task. Jason