This is the bt result:
_atomic_inc_32 (some number and letter) at netbsd:_atomic_inc_32+0x4
vn_open (some number and letter) at netbsd:vn_open+0x7d
kobj_load_file (some number and letter) at netbsd:kobj_load_file+0xc2
module_do_load (some number and letter) at netbsd:module_do_load+0x2dc
module_autoload (some number and letter) at netbsd:module_autoload
+0xbc
spec_open (some number and letter) at netbsd:spec_open+0x3c5
VOP_OPEN (some number and letter) at netbsd:VOP_OPEN+0x6c
vfs_mountroot (some number and letter) at netbsd:vfs_mountroot+0x149
main (0, c01002cd,0,0,0,0,0,0,0,0) at netbsd:main+0x2fb