[SOLVED] Kernel panic

[Alexstrasza]

Hi all,

 

The past week or so I've been getting kernel panics on my server.  This has definitely been happening on the most recent betas (6.9.0-beta1 and beta22) and may have been happening on the stable release as well.  Unfortunately as the kernel panics, there are no logs of what was happening before or what went wrong, attached is the only screenshot I've been able to pull from the console screen.  Any suggestions would be much appreciated.

 

 

[Alexstrasza]

Further information that may be relevant:

• The server has a 10GBe NIC
• The server is running a Ryzen 3700X
• The motherboard is a X470D4U by AsRock Rack

 

I've attached the most recent diagnostics from after the reboot.

sector5-diagnostics-20200621-1422.zip

Edited June 21, 2020 by Alexstrasza
Add diagnostics

[JorgeB]

Make sure it's using the recommended power supply idle control setting.

[Alexstrasza]

27 minutes ago, johnnie.black said:

Make sure it's using the recommended power supply idle control setting.

I've enabled "Typical current idle" and will report back if that resolves the panic.

[Squid]

If that fails, try dropping the memory speed from it's overclock setting of 3200 down to its native speed of 2666

[Alexstrasza]

1 minute ago, Squid said:

If that fails, try dropping the memory speed from it's overclock setting of 3200 down to its native speed of 2666

Will do, thanks!

[Alexstrasza]

Update: The server crashed again.  I have now reset the RAM overclock so it's running at stock speeds.

 

The panic does always appear to be in some kind of TCP stack, so that might be relevant if it crashes again.

[Alexstrasza]

Final update: The server has not crashed again, so I can comfortably say that the problem was the overclocked RAM.  Thank you everyone for your help!

[ocedric]

Hi Alexstrasza,

 

I'm having the same issue, and it just happened at the end of my array rebuild 😕

 

Did the RAM speed setting solve the issue on the long term?  No more Kernel Panic since then?

[Alexstrasza]

2 hours ago, ocedric said:

Hi Alexstrasza,

 

I'm having the same issue, and it just happened at the end of my array rebuild 😕

 

Did the RAM speed setting solve the issue on the long term?  No more Kernel Panic since then?

 

Hi there, no, no more complete panics since then. I've had quite a lot of general instability issues, the X470D4U motherboard seems to be plagued with issues, in particular reliability varies hugely BIOS to BIOS, so if you're running that motherboard then I heavily recommend the P3.50 BIOS firmware and 2.20.00 BMC firmware, which have been the most stable I've seen. It's also worth noting that future UnRaid versions have also improved other issues a lot, so I heavily recommend checking you are on the latest version as well.