asmlinkage void do_ade(struct pt_regs *regs)
{
	unsigned int __user *pc;
	mm_segment_t seg;

	perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,
			1, 0, regs, regs->cp0_badvaddr);
	/*
	 * Did we catch a fault trying to load an instruction?
	 * Or are we running in MIPS16 mode?
	 */
	if ((regs->cp0_badvaddr == regs->cp0_epc) || (regs->cp0_epc & 0x1))
		goto sigbus;

	pc = (unsigned int __user *) exception_epc(regs);
	if (user_mode(regs) && !test_thread_flag(TIF_FIXADE))
		goto sigbus;
	if (unaligned_action == UNALIGNED_ACTION_SIGNAL)
		goto sigbus;
	else if (unaligned_action == UNALIGNED_ACTION_SHOW)
		show_registers(regs);

	/*
	 * Do branch emulation only if we didn't forward the exception.
	 * This is all so but ugly ...
	 */
	seg = get_fs();
	if (!user_mode(regs))
		set_fs(KERNEL_DS);
	emulate_load_store_insn(regs, (void __user *)regs->cp0_badvaddr, pc);
	set_fs(seg);

	return;

sigbus:
	die_if_kernel("Kernel unaligned instruction access", regs);
	force_sig(SIGBUS, current);

	/*
	 * XXX On return from the signal handler we should advance the epc
	 */
}
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.