spin_lock_irqsave(&kprobe_lock, flags); 
spin_lock_irqsave(&kretprobe_lock, flags); 
void __kprobes unregister_kretprobe(struct kretprobe *rp){	unsigned long flags;	struct kretprobe_instance *ri;	unregister_kprobe(&rp->kp);	/* No race here */	spin_lock_irqsave(&kprobe_lock, flags);	free_rp_inst(rp);	while ((ri = get_used_rp_inst(rp)) != NULL) {		ri->rp = NULL;		hlist_del(&ri->uflist);	}	spin_unlock_irqrestore(&kprobe_lock, flags);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/3516a46042508a495fac13c2e73530d936ebe015/kprobes.c/buggy/kernel/kprobes.c