if traceAllocFreeEnabled() {
			trace := traceTryAcquire()
			if trace.ok() {
				trace.SpanFree(s)
				traceRelease(trace)
			}
		}

		lock(&h.lock)
		if msanenabled {
			// Tell msan that this entire span is no longer in use.
			base := unsafe.Pointer(s.base())
			bytes := s.npages << _PageShift
			msanfree(base, bytes)
		}
		if asanenabled {