netbsd# mount /usr/ports/
uvm_fault(0xffffa00006830178, 0x0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8023785e cs e030 rflags 10246 cr2  28 cpl 0 rsp ffffa000069bd930
kernel: page fault trap, code=0
Stopped in pid 834.1 (mount_ffs) at     netbsd:ffs_mount+0x6ae: movq    0x28(%ra
x),%rsi
ffs_mount() at netbsd:ffs_mount+0x6ae
do_sys_mount() at netbsd:do_sys_mount+0x625
sys___mount50() at netbsd:sys___mount50+0x33
syscall() at netbsd:syscall+0xb4
ds          0
es          0x2000
fs          0
gs          0xd5a0
rdi         0xffffffff80469de8  copyright+0x762a8
rsi         0x2
rbp         0xffffa000069bda30
rbx         0x7f7fffffd5a0
rdx         0
rcx         0
rax         0
r8          0
r9          0
r10         0x1
r11         0x3
r12         0
r13         0xffffa00006972000
r14         0xffffa0000029f580
r15         0xffffa0000698d000
rip         0xffffffff8023785e  ffs_mount+0x6ae
cs          0xe030
rflags      0x10246
rsp         0xffffa000069bd930
ss          0xe02b
netbsd:ffs_mount+0x6ae: movq    0x28(%rax),%rsi
db>