dfh: DF2225: arming once-window (flag=1, init NOT run)
dfh: DF2225: once=1; spawning delayed completer
Fatal user address access from kernel mode from sysctl at ffffffff809e55f8


Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic id = 1
fault virtual address	= 0x8
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff809e55f8
stack pointer	        = 0x10:0xfffff801182276c8
frame pointer	        = 0x10:0xfffff801182276f8
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		= 820
current thread          = pri 6
kernel: type 12 trap, code=0

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      _prop_rb_tree_find+0x18:        movq    0x8(%r15),%rbx