I210 TX/RX hang

Hi,

I'm using the I210 with 3.14.26-rt22 kernel and igb driver 5.2.15.

During a stress test, after ~10-15 hours I receive NETDEV WATCHDOG timeout.

It seems that the RX FIFO had overrun scenario, but it can't recover from it, no further receive/transmit interrupt is asserted after the overrun scenario, it seems that RX/TX unit hangs.

Bringing down/up the network interface, doesn't recover from this problematic scenario, only power-up to the board (TI AM5728).

Attached is information retrieved after the timeout.

Please advise.

Thanks,

Adi