do_general_protection(struct pt_regs *regs, long error_code)
{
	struct task_struct *tsk;

	RCU_LOCKDEP_WARN(!rcu_is_watching(), "entry code didn't wake RCU");
	cond_local_irq_enable(regs);

	if (static_cpu_has(X86_FEATURE_UMIP)) {
		if (user_mode(regs) && fixup_umip_exception(regs))
			return;
	}

	if (v8086_mode(regs)) {
		local_irq_enable();
		handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code);
		return;
	}

	tsk = current;
	if (!user_mode(regs)) {
		if (fixup_exception(regs, X86_TRAP_GP))
			return;

		tsk->thread.error_code = error_code;
		tsk->thread.trap_nr = X86_TRAP_GP;
		if (notify_die(DIE_GPF, "general protection fault", regs, error_code,
			       X86_TRAP_GP, SIGSEGV) != NOTIFY_STOP)
			die("general protection fault", regs, error_code);
		return;
	}

	tsk->thread.error_code = error_code;
	tsk->thread.trap_nr = X86_TRAP_GP;

	if (show_unhandled_signals && unhandled_signal(tsk, SIGSEGV) &&
			printk_ratelimit()) {
		pr_info("%s[%d] general protection ip:%lx sp:%lx error:%lx",
			tsk->comm, task_pid_nr(tsk),
			regs->ip, regs->sp, error_code);
		print_vma_addr(KERN_CONT " in ", regs->ip);
		pr_cont("\n");
	}

	force_sig_info(SIGSEGV, SEND_SIG_PRIV, tsk);
 }

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.