}
		// Note cache c only valid while m acquired; see #47302
		if rate != 1 && userArenaChunkBytes < c.nextSample {
			c.nextSample -= userArenaChunkBytes
		} else {
			profilealloc(mp, unsafe.Pointer(span.base()), userArenaChunkBytes)
		}
	}
	mp.mallocing = 0
	releasem(mp)

	// Again, because this chunk counts toward heapLive, potentially trigger a GC.