Kernel Crash: "BUG: unable to handle kernel NULL pointer dereference at x"

[Duckbuster]

Yesterday I installed unRAID, and setup my 4disk + 1 cache disk array.

 

I already started copying some data over while the parity drive was initializing, everything was going well.

Was at 50% done when I went to bed, woke up and was greeted by a kernel panic/crash.

 

 

I restarted the PC again, since the webui was not available anymore.

Started the array, seems like no errors, but it's redoing all of the parity stuff again now.

 

So I wanna know, what went wrong? And what can I do to prevent this in the future?

Edited February 17, 2019 by Duckbuster

[Smoetzak]

Hello. It seems i have the same issue. Have you ever found the solutions?

[trurl]

Very old thread but might as well use it. 

 

Go to Tools-diagnostics and attach the complete Diagnostics zip file to your NEXT post in this thread. 

[FlexGunship]

Same problem... diag.zip doesn't help since it refreshes on boot. I have the syslog attached below:

 

syslog

[trurl]

13 minutes ago, FlexGunship said:

diag.zip doesn't help

Can you get diagnostics before the crash?

[FlexGunship]

Tried many times... the system hardlocks pretty aggressively. Even locally, with keyboard and mouse on the server, you can't navigate.

 

The syslog is the best I've gotten so far.

[trurl]

It isn't really clear that whatever problem others on this old thread were having was even the same problem, even though everyone starts by saying "same problem".

 

Have you tried booting in SAFE mode?

[trurl]

1 minute ago, trurl said:

It isn't really clear that whatever problem others on this old thread were having was even the same problem, even though everyone starts by saying "same problem".

For example, OP was likely a different version of Unraid and maybe a different kernel since it was 2 years ago.