On Mon, Nov 22, 2021 at 01:13:24PM -0800, Peter Oskolkov wrote: > +die: > + pr_warn("%s: killing task %d\n", __func__, current->pid); > + force_sig(SIGKILL); That pr_warn() might need to be pr_warn_ratelimited() in order to no be a system log DoS. Because, AFAICT, you can craft userspace to trigger this arbitrarily often, just spawn a worker and make it misbehave.