[Bug 266315] linuxkpi panic after recent updates (13.1-STABLE #0 stable/13-9cbba5950: Wed Sep 7 23:42:41 CEST 2022)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266315

--- Comment #36 from Paul Dufresne <[email protected]> ---
Sorry... I am still a bit newbie.

Is the information you give are in /var/messages files, or is it you that get
it from procedure described in:
https://docs.freebsd.org/en/books/developers-handbook/kerneldebug/

I note that:
dumpon -l
shows the device where crash info is saved in swap area before rebooting after
a kernel panic

savecore -C -v
(to be done after the reboot I think)
would show if a crash report exist

if it exist:
savecore -v
should save core crash in /var/crash
while
savecore -v .
would save core crash in current directory

then:
kgdb -n last
would get you in kernel debugger where info you given would be shown.

but the interesting part is after, read lines 41 and 53 in the:
https://docs.freebsd.org/en/books/developers-handbook/kerneldebug/

where you get shown source code, and the backtrace.

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