unexpected rebooting cpu panic problem

[Ercan Deger]

Hello All,

my FreeBSD box is rebooting randomly.

It gives error cpu panic. what can be the problem?

Thanks for your help.

 

[covacat]

looks like it bombs in netgraph code
build a debug kernel and install gdb to get more info

 

[Cath O'Deray]

Which version of FreeBSD, exactly?

freebsd-version -kru ; uname -aKU

looks like it bombs in netgraph code …

Is the backtrace at <https://lists.freebsd.org/archives/freebsd-current/2022-February/001530.html> comparable to what's pictured above? See below;

… different. …

 

[covacat]

looks similar, just that the lists one looks to bomb with a failed assertion
also the bug seem more and more netgraph related (the other guy has a broadcom nic, here is an intel one)

 

[Ercan Deger]

Which version of FreeBSD, exactly?

freebsd-version -kru ; uname -aKU



Is the backtrace at <https://lists.freebsd.org/archives/freebsd-current/2022-February/001530.html> comparable to what's pictured above?

FreeBSD version: 11.3-RELEASE-p9

 

[covacat]

FreeBSD version: 11.3-RELEASE-p9

time to upgrade to a supported version
you won't get much help here and perhaps elsewhere by running an EOL-ed version
it's possible the bug/problem exists in supported versions too but you at least have a chance that developers look at it

 

[_martin]

If you have generic kernel the best way would be to make sure you have crash dumps available and open a PR.
Here you have a second problem - you are running unsupported version of FreeBSD.

grahamperrin That PR you mentioned is different.

Problem happened in frame #6, ng_apply_item function. Example of such fault is attempt to write to readonly area. Not much can be done without crash dump.
However you should update to a supported version first. Enable crash dumps. If you get the same problem on supported version open a PR.