freebsd-questions Digest, Vol 655, Issue 4

Matthew Seaman matthew at
Thu Dec 22 15:45:30 UTC 2016

On 22/12/2016 13:56, Manish Jain wrote:
> That URL says that first I have to 'locate the debug version of your 
> kernel (normally called kernel.debug)'.
> Now, I am running the standard generic kernel that was installed by the 
> FreeBSD 11 amd64 setup CD. The command 'locate kernel.debug' returns an 
> empty string.

Good question.  On a system built from source, you'ld want either:




but you don't have either of those when using a -RELEASE kernel IIRC.
Well, certainly not the last one.

Failing that, I'm afraid that I do not know how you're meant to be able
to get a decent backtrace out of a RELEASE kernel.



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