int do_fpu_inst(unsigned short inst, struct pt_regs *regs)
{
	struct task_struct *tsk = current;
	struct sh_fpu_soft_struct *fpu = &(tsk->thread.xstate->softfpu);

	perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);

	if (!(task_thread_info(tsk)->status & TS_USEDFPU)) {
		/* initialize once. */
		fpu_init(fpu);
		task_thread_info(tsk)->status |= TS_USEDFPU;
	}

	return fpu_emulate(inst, fpu, regs);
}
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.