}
	if skip > maxSkip {
		print("requested skip=", skip)
		throw("invalid skip value")
	}
	gp := getg()
	mp := acquirem() // we must not be preempted while accessing profstack

	nstk := 1
	if tracefpunwindoff() || gp.m.hasCgoOnStack() {
		mp.profStack[0] = logicalStackSentinel
		if gp.m.curg == nil || gp.m.curg == gp {
			nstk = callers(skip, mp.profStack[1:])
		} else {