// cgoCallers.  We are running in a signal handler
		// with all signals blocked, so we don't have to worry
		// about any other code interrupting us.
		if mp.cgoCallersUse.Load() == 0 && mp.cgoCallers != nil && mp.cgoCallers[0] != 0 {
			for cgoOff < len(mp.cgoCallers) && mp.cgoCallers[cgoOff] != 0 {
				cgoOff++
			}
			n += copy(stk[:], mp.cgoCallers[:cgoOff])
			mp.cgoCallers[0] = 0
		}