kern/60972: Kernel panic after install

["Jakaboo24%gmail.com@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60972
>Category:       kern
>Synopsis:       Kernel panic after install
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 06 13:15:00 +0000 2026
>Originator:     Jacob
>Release:        NetBSD 11.1
>Organization:
--
>Environment:
No such commmand: uname
>Description:
Booting fails either at the kernel or prekernel after installation on a Thinkpad L420 w/ an i7-2640M with a Micron SATA 6GBPS 256GB SSD. Backtrace reads as follows:

chacha_stream_sse2() at netbsd:chachastream_sse2+0x1ef
xchacha_stream_sse2() at netbsd:chachastream_sse2+0x169
xchacha_stream_sse2_impl() at netbsd:xchacha_stream_sse2_impl+0x41
xchacha_stream_selftest() at netbsd:xchacha_stream_selftest+0x4e
chacha_selftest() at netbsd:chacha_selftest+0x106
chacha_modcmd() at netbsd:chacha_modcmd+0x27
module_do_builtin() at netbsd:module_do_builtin+0x146
module_do_builtin() at netbsd:module_do_builtin+0xfb
module_init_class() at netbsd:module_init_class+0x166
main() at netbsd:main+0x464
start_prekern() at netbsd:start_prekern+0xf0
?() at 10063d

After contents of the backtrace in the initial boot attempt, I am left with:

ds       8a28
es       0
fs       1
gs       e0c0
rdi      ffffffff82c98a28
rsi      ffffffff82c98974
rbp      ffffffff82c98960
rbx      1
rdx      0
rcx      ffffffff82c98c28
rax      0
r8       ffffffff82c98980
r9       14
r10      260
r11      0
r12      260
r13      0
r14      fffffffffa7bc2700   nonce.3
r15      fffffffffa7bc26e0   k.2
rip      fffffffffc0f4534e   chacha_stream_sse2+0x1ef
cs       0
rflags   10286
rsp      fffffffff82c98620
ssb      10
netbsd:chacha_stream_sse2+0x1ef:      ???
db(2)>

It should be noted that the computer POSTs at an unusually dark brightness and cannot be adjusted.
>How-To-Repeat:
Restart my computer.
>Fix:
I do not know.