1.02419201 trap type 1 code 0 rip OXfIFTITISUM
1.02419201 curlup OxffffffFF81886580 pid 0.0 louest kstack Bb

Stopped in pid 0.0 (system) at netbsd:breakpoint+0x5: leavea
breakpoint () at netbsd:breakpoint+0x5
vpanic() at netbsd:panic+0x173 
panic() at netbsd:panic+0x3c 
extent_alloc_region() at netbsd:extent_alloc_region+0×253
bus_space_reserve() at netbsd:bus_space_reserve+0×54 
bus_space_map() at netbsd:bus_space_map+0x43
lpt_acpi_attach() at netbsd:lpt_acpi_attach+0xa7
config_attach_internal () at netbsd:config_attach_internal+0x19f 
config-found() at netbsd:config_found+Oxc3
acpi_rescan() at netbsd: acpi_rescan+0x36d 
acpi_attach () at netbsd:acpi_attach+0x44d 
config_attach_internal () at netbsd:config_attach_internal+0x19f 
config_found() at netbsd:config_found+Oxc3
amd64_mainbus_attach() at netbsd:and64_mainbus_attach+0x28c 
config_attach_internal () at netbsd:config_attach_internal+0x19f 
config_rootfound() at netbsd:config_rootfound+0x7?
cpu configure() at netbsd:cpu_configure+0x38 
main() at netbsd:main+0x32c
ds     ffff

sys/sys/param.h	Date	hash	result
9.99.51		a448ee406f9	good
9.99.76		25fb6b0155c	good
9.99.85			good
9.99.90	2021-09-30	cecc8649fa4	good
9.99.90	2021-10-10	56901406d02	good
9.99.91	2021-10-11	264edd1cdde	good
	2021-10-12	236a2da8495	good
	2021-10-16	0afa3e1220e	good
	2021-10-18	817528da449	bad
9.99.92	2021-10-20	7cbfca3eab0	bad
		ec3d1ddf142	bad
9.99.94	2022-03-03	97bb14546bb	bad

Dmesg for 9.99.91

git bisect start bad good
git bisect good
git bisect bad
git bisect skip

git g -- sys/dev/acpi

* 4b77a4866ad [2021-10-15 19:21:45 +0000] Convert some debug messages to aprint_debug @jmcneill
* 957ea0a8133 [2021-10-07 00:11:08 +0000] Also print the device name with aprint_naive, 
                                          like wss@pnpbios does. @uwe
* 78d045556f6 [2021-10-06 20:10:42 +0000] Don't use aprint_normal_dev("") to print the device name. @uwe
* baaa913025e [2021-10-06 18:41:34 +0000] Fix KASSERT triggered when attaching opl at wss. @uwe

time sudo ./build.sh -j 4 -u -T /export/T -O /export/O kernel=GENERIC

localhost@makoto 18:01:11/230506(..git-work/netbsd-src)% git bisect good
0223269e93ddbb5f5587645143bfaaed9e00fab2 is the first bad commit
commit 0223269e93ddbb5f5587645143bfaaed9e00fab2
Author: jmcneill <jmcneill@netbsd.org>
Date:   Sat Oct 16 13:09:40 2021 +0000

    Enable com and lpt at ACPI attachments.

 sys/arch/amd64/conf/GENERIC | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)