DF5497 mode2: 16 descents at +4 MB..+64 MB past the ROM in 4 MB steps: expect oracle lines then Fatal trap 12 in dfh_crom_next (unmapped kernel_map page)
crom_next: bound check failed
crom_next: bound check failed
crom_next: bound check failed
crom_next: bound check failed
panic: assertion "obj != NULL" failed in vm_object_hold_shared at /usr/src/sys/vm/vm_object.c:330
cpuid = 1
Trace beginning at frame 0xfffff8011842b038
vm_object_hold_shared() at vm_object_hold_shared+0x3f 0xffffffff809ab9bf 
vm_object_hold_shared() at vm_object_hold_shared+0x3f 0xffffffff809ab9bf 
vm_fault() at vm_fault+0x408 0xffffffff8099e0b8 
trap_pfault() at trap_pfault+0x9a 0xffffffff80bd52ca 
trap() at trap+0x17c 0xffffffff80bd5bcc 
calltrap() at calltrap+0x9 0xffffffff80b991fa 
--- trap 000000000000000c, rip = ffffffff82600113, rsp = fffff8011842b450, rbp = fffff8011842b478 ---
dfh_crom_next() at dfh_crom_next+0x53 0xffffffff82600113 
Debugger("panic")

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>