[ 139.5491192] panic: fpudna from kernel, ip 0xffffffff80200560, trapframe 0xffffa682486f00d0
[ 139.5491192] cpu1: Begin traceback...
[ 139.5491192] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
[ 139.5491192] panic() at netbsd:panic+0x9e sys/kern/subr_prf.c:1084
[ 139.5491192] fpudna() at netbsd:fpudna+0x84 sys/arch/x86/x86/fpu.c:649
[ 139.5491192] Xtrap07() at netbsd:Xtrap07+0xa8
[ 139.5491192] pmap_update() at netbsd:pmap_update+0x61 sys/arch/x86/x86/pmap.c:5926
[ 139.5491192] mm_readwrite() at netbsd:mm_readwrite+0x627 dev_mem_readwrite sys/dev/mm.c:219 [inline]
[ 139.5491192] mm_readwrite() at netbsd:mm_readwrite+0x627 sys/dev/mm.c:347
[ 139.5491192] cdev_write() at netbsd:cdev_write+0x172 sys/kern/subr_devsw.c:1507
[ 139.5491192] spec_write() at netbsd:spec_write+0x26d sys/miscfs/specfs/spec_vnops.c:1225
[ 139.5491192] VOP_WRITE() at netbsd:VOP_WRITE+0x27d sys/kern/vnode_if.c:824
[ 139.5491192] vn_write() at netbsd:vn_write+0x25d sys/kern/vfs_vnops.c:717
[ 139.5491192] ktrwrite() at netbsd:ktrwrite+0x39e sys/kern/kern_ktrace.c:1334
[ 139.5491192] ktrace_thread() at netbsd:ktrace_thread+0xfe sys/kern/kern_ktrace.c:1404
[ 139.5491192] cpu1: End traceback...
[ 139.5491192] fatal breakpoint trap in supervisor mode
[ 139.5491192] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x82 cr2 0xc0000378f0 ilevel 0 rsp 0xffffa682486eff80
[ 139.5491192] curlwp 0xffffa68012d15700 pid 0.2632 lowest kstack 0xffffa682486e92c0
[St o1p3p9.ed5 4i9n11 p9i2]d  u0.v2m_63f2au (lts(ys0txefmff) faat680129583c0, 0x0, 1) -> e
[ 139.5491192] fatal page fault in supervisor mode
  tr a p    tnypeet b6sd c:obrdeea k0p roiinpt 0+x0fx5ff: ff lfeffa8ve02[
? 13
9.5491192] 00380 cs 0x8 rflags 0x10002 cr2 0 ilevel 0x8 rsp 0xffffa6822f729fc8
[ 139.5491192] curlwp 0xffffa68013dff240 pid 1081.449 lowest kstack 0xffffa682485e12c0
kernel: page faubltre  ak  p otinrat(p),    acto de=0
Faulted in DDB; continuing...
db{0}> netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105 sys/ddb/db_panic.c:71
vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
panic() at netbsd:panic+0x9e sys/kern/subr_prf.c:1084
fpudna() at netbsd:fpudna+0x84 sys/arch/x86/x86/fpu.c:649
Xtrap07() at netbsd:Xtrap07+0xa8
pmap_update() at netbsd:pmap_update+0x61 sys/arch/x86/x86/pmap.c:5926
mm_readwrite() at netbsd:mm_readwrite+0x627 dev_mem_readwrite sys/dev/mm.c:219 [inline]
mm_readwrite() at netbsd:mm_readwrite+0x627 sys/dev/mm.c:347
cdev_write() at netbsd:cdev_write+0x172 sys/kern/subr_devsw.c:1507
spec_write() at netbsd:spec_write+0x26d sys/miscfs/specfs/spec_vnops.c:1225
VOP_WRITE() at netbsd:VOP_WRITE+0x27d sys/kern/vnode_if.c:824
vn_write() at netbsd:vn_write+0x25d sys/kern/vfs_vnops.c:717
ktrwrite() at netbsd:ktrwrite+0x39e sys/kern/kern_ktrace.c:1334
ktrace_thread() at netbsd:ktrace_thread+0xfe sys/kern/kern_ktrace.c:1404
[ 139.5491192] Skipping crash dump on recursive panic
[ 139.5491192] panic: stack overflow detected; terminated
[ 139.5491192] cpu1: Begin traceback...
[ 139.5491192] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
[ 139.5491192] panic() at netbsd:panic+0x9e sys/kern/subr_prf.c:1084
[ 139.5491192] __stack_chk_fail() at netbsd:__stack_chk_fail+0x1c sys/kern/kern_ssp.c:59
[ 139.5491192] db_stack_trace_print() at netbsd:db_stack_trace_print+0x1256
[ 139.5491192] ?() at 0
[ 139.5491192] cpu1: End traceback...
[ 139.5491192] fatal breakpoint trap in supervisor mode
[ 139.5491192] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x286 cr2 0xc0000378f0 ilevel 0x8 rsp 0xffffa682486eec40
[ 139.5491192] curlwp 0xffffa68012d15700 pid 0.2632 lowest kstack 0xffffa682486e92c0
Stopped in pid 0.2632 (system) at       netbsd:breakpoint+0x5:  leave