login: Fatal user address access from kernel mode from sidl_race at ffffffff806504ff


Fatal trap 12: page fault while in kernel mode
cpuid = 4; lapic id = 4
fault virtual address	= 0xa0
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff806504ff
stack pointer	        = 0x10:0xfffff80118511858
frame pointer	        = 0x10:0xfffff80118511868
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		= 889
current thread          = pri 6 
kernel: type 12 trap, code=0

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      p_trespass+0x3f:        movl    0xa0(%r12),%eax
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