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多个板子出现rcu异常,最严重导致板子卡死,串口和网卡均无法进入系统,相关日志如下,各位大神,指导下:
其中dmesg报错中提到两个进程 P12134 P11965,wwan0是4G模块接口名;另外ifconfig wwan0进程变成D,这个会是导致modprobe RCU告警的吗?
看一下编写的驱动是否出现死锁
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