Fatal trap 18: integer divide fault while in kernel mode
cpuid = 1; lapic id = 1
instruction pointer	= 0x8:0xffffffff804bff29
stack pointer	        = 0x10:0xfffff80118505678
frame pointer	        = 0x10:0xfffff801185056b8
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		= 855
current thread          = pri 6 
trap number		= 18
panic: integer divide fault
cpuid = 1
Trace beginning at frame 0xfffff801185054d8
trap_fatal() at trap_fatal+0x301 0xffffffff80bd5be1 
trap_fatal() at trap_fatal+0x301 0xffffffff80bd5be1 
trap() at trap+0x457 0xffffffff80bd6a07 
calltrap() at calltrap+0x9 0xffffffff80b99d5a 
--- trap 0000000000000012, rip = ffffffff804bff29, rsp = fffff80118505660, rbp = fffff801185056b8 ---
fwdma_malloc_multiseg() at fwdma_malloc_multiseg+0x139 0xffffffff804bff29 
fwdev_allocbuf() at fwdev_allocbuf+0x6a 0xffffffff804bec8a 
fw_ioctl() at fw_ioctl+0x982 0xffffffff804bf742 
boot() called on cpu#1
Uptime: 25s
Physical memory: 4060 MB
Dumping 668 MB: 653 637 621 605 589 573 557 541 525 509 493 477 461 445 429 413 397 381 365 349 333 317 301 285 269 253 237 221 205 189 173 157 141 125 109 93 77 61 45 29 13
Dump complete