On 15-1-2022 15:28, Eugene Grosbein wrote:
15.01.2022 21:06, Willem Jan Withagen wrote:
On 14-1-2022 17:41, Eugene Grosbein wrote:
14.01.2022 23:34, Willem Jan Withagen wrote
That is it..... it is "dead" after that
Does 14-CURRENT have KDB stuff preloaded, I could give it a shot.
I'm not sure, you'll have to try it yourself.
Otherwise I'd have to build 11.4 and go into KDB from there.
What are the first things you need to know?
https://docs.freebsd.org/en/books/developers-handbook/book/
Look at the section "10.6. Debugging Deadlocks" as the problem looks like some
deadlock (no panic, no progress).
I have tried all incarnations on that page.
Even found
https://gist.github.com/bijanebrahimi/f2eb0c620d81aa6234e121a0ddd88cc2
which I think has the info more organized.
Can it be that the deadlock is too early for the DDB break to be triggered?
Maybe, can't tell for sure. I'm afraid you'll need to dig it more:
read the code and add more "prints" to the kernel.
Yeah, looking forward to that.
One question though, running 14-current I can use CTRL-ALT-ESC to get
into ddb
BUT only after the system has gone into starting 'init()' of the installer.
Before that it is ignored.
Am I overlooking the incantation to trap into a booting kernel?
--WjW
