 if (!cur) return 0; 
static int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr){	struct kprobe *cur = kprobe_running();	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();	if (!cur)		return 0;	if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))		return 1;	if (kcb->kprobe_status & KPROBE_HIT_SS) {		resume_execution(cur, regs);		reset_current_kprobe();		preempt_enable_no_resched();	}	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/d217d5450f11d8c907c0458d175b0dc999b4d06d/kprobes.c/clean/arch/ia64/kernel/kprobes.c