unknown: 48MB <DF2489 SANE GEOMETRY FW000001> at ata0-master PIO4


Fatal trap 18: integer divide fault while in kernel mode
cpuid = 4; lapic id = 4
instruction pointer	= 0x8:0xffffffff81de419f
stack pointer	        = 0x10:0xfffff8008d9ab950
frame pointer	        = 0x10:0xfffff8008d9aba20
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 0, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= Idle
current thread          = pri 12 
kernel: type 18 trap, code=0

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      ad_describe+0x1bf:      divq    %rcx,%eax
db>