Re: Diagnosing npf crashes [was Re: Looking to address two networking issues with NetBSD 10]

[Taylor R Campbell <campbell+netbsd-tech-net%mumble.net@localhost>]

> Date: Fri, 18 Oct 2024 22:44:00 +0000
> From: Taylor R Campbell <campbell+netbsd-tech-net%mumble.net@localhost>
> 
> 1. If you have a crash dump [...]

If you _don't_ have a crash dump I suggest finding what's getting in
the way of crash dumps so you can get them.  You can use, e.g.,

sysctl -w debug.crashme_enable=1
sysctl -w debug.crashme.panic=1

to trigger a panic in order to test crash dumps.

Typical causes:

1. no dump device configured in /etc/fstab
2. dump device is too small
3. NetBSD doesn't know how to dump to that kind of dump device