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RS485全双工 突然间不能收了可以发

测试部门测试了530多万个数据包之后发现485全双工突然之间不能接收了。我查看了这两个进程的内存maps, cat /proc/{$pid}/map 发现相应的应用程序后边多了一个(deleted),请问是不是发生了内存泄漏?

正常情况下是没有这个的