port-i386/56676: Soekris net4801 panics running ATF tests

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         56676
>Category:       port-i386
>Synopsis:       Soekris net4801 panics running ATF tests
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 29 10:15:00 +0000 2022
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date 2022.01.05.01.46.28
>Organization:
  
>Environment:
System: NetBSD
Architecture: i386
Machine: i386
>Description:

Running the ATF tests on -current/i386 on a Soekris net4801
(this has a Geode SC1100 CPU):

lib/libc/sys/t_ptrace_wait (332/915): 403 test cases
[...]
    x86_cve_2018_8897: [0.525477s] Passed.
    x86_fpregs_fpu_core: [ 7959.3047800] panic: fpu trap from kernel, trapframe 0xc9cfaf4c

[ 7959.3047800] cpu0: Begin traceback...
[ 7959.3047800] vpanic(c1299eb8,c9cfaeb4,c9cfaf40,c01243f7,c1299eb8,c9cfaf4c,c9cfaf68,c16212f4,c9cfaed8,c0d572e6) at netbsd:vpanic+0x13c
[ 7959.3047800] panic(c1299eb8,c9cfaf4c,c9cfaf68,c16212f4,c9cfaed8,c0d572e6,c9cfaed8,bfb8da54,4,0) at netbsd:panic+0x18
[ 7959.3047800] fputrap(c9cfaf4c,c1b60010,30,10,c9cf0010,c2a4a880,b97d03e8,c9cfaf9c,c9cf8000,0) at netbsd:fputrap+0xf6
[ 7959.3047800] Xtrap10(c2a4a880,18e00b3,18e00ab,1f,c010001f,b959bc00,b97d03e8,bfb8d970,b97d0000,0) at netbsd:Xtrap10+0x65
[ 7959.3047800] cpu0: End traceback...

[ 7959.3047800] dumping to dev 0,1 offset 759
[ 7959.3047800] dump 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 succeeded


[ 7959.3047800] rebooting...

>How-To-Repeat:

See above.

>Fix: