AnsweredAssumed Answered

FEC driver bug explanation

Question asked by Vladimir Ovseychuk on Jun 1, 2016

Hello, dear Freescale!

 

Can you explain a bug with system failure under high network load?

 

I'm using i.MX287 with two ethernet controllers connected with bridge

On kernel 3.18 (OpenWRT) I catched NETDEV WATCHDOG warning and kernel oops while iperf testing (log.txt).

But when I backported your driver from 4.4.7 to 3.18.29, bug disappeared.

3 files was changed:

  • fec_main.c
  • fec.h
  • fec_ptp.c

 

What/where is the reason of the failure?

Thanks in advance.

Vladimir.

Original Attachment has been moved to: fec_ptp_old.c.zip

Original Attachment has been moved to: log.txt.zip

Original Attachment has been moved to: fec_old.h.zip

Original Attachment has been moved to: fec.h.zip

Original Attachment has been moved to: fec_main.c.zip

Original Attachment has been moved to: fec_main_old.c.zip

Original Attachment has been moved to: fec_ptp.c.zip

Outcomes