Re: kern/55182: NPF on NetBSD 9 can lock / panic machine

[coypu%sdf.org@localhost]

The following reply was made to PR kern/55182; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/55182: NPF on NetBSD 9 can lock / panic machine
Date: Thu, 16 Apr 2020 05:07:42 +0000

 Got any kernel coredump or backtrace? the panic isn't super informative.
 I see that crash(8) is somewhat limited on alpha (so not sure if it does
 kernel core dumps at all), but on amd64 you should be able to do:
 
 cd /var/crash
 And if there's a netbsd.1.gz there:
 gunzip netbsd.1*
 crash -M netbsd.1 -N netbsd.1.core
 crash> bt
 
 
 Also if you do:
 gdb /netbsd	# even better if it's the netbsd.gdb built from the same
 		# sources. It's in the kernel build directory.
 		# e.g. obj/sys/arch/alpha/compile/GENERIC/netbsd.gdb
 
 (gdb) info line *(0xfffffc0000bc2d0c)
 			^^ this is the value mentioned as 'ra'.
 			   it should be the function calling into this
 			   one, so it's part of the backtrace
 
 What function is it?