Re: CVS commit: src/sys

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Wed, 15 Sep 2021 19:58:20 +0900
> From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
> 
> login: [  95.5000696] panic: kernel diagnostic assertion "slock != NULL" failed: file "../../../../uvm/uvm_pdaemon.c", line 398 pg 0x8c66bd88 uobj 0x8fa7e400, NULL lock
> [...]
> 
> It seems that I can avoid this panic if
> 
> - revert kern_ksyms.c to rev 1.98 (*), *or*
> - set savecore=NO in rc.conf.
> 
> (*) I've not tested revs 1.99--1.103.
> 
> Can you please take a look into?

Interesting.  I'm not sure what's going on here.  The uvm panic looks
like a compounded symptom rather than the original problem.

Can you try booting with savecore=NO and see if `cat /dev/ksyms' or
`nm /dev/ksyms' works?

Can you also try rev. 1.103 and see if that makes a difference, just
to narrow it down?  (No point in trying the other revisions.  Unlikely
that 1.103 will work if 1.104 doesn't, but will help to confidently
narrow it down.)