panic: uvm_fault_unwire_locked: address not in map
Starting stack trace...
panic(ffffffff83082d9f) at panic+0x1ba sys/kern/subr_prf.c:229
uvm_fault_unwire_locked(fffffd806beffc28,20000000,20002000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663
uvm_fault_unwire(fffffd806beffc28,20000000,20002000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623
kern_sysctl(ffff8000376473a4,5,20000100,ffff8000376473d8,0,37,e27c85891bb360e7) at kern_sysctl+0xbdc
sys_sysctl(ffff80002a4cf200,ffff800037647510,ffff800037647460) at sys_sysctl+0x422
syscall(ffff800037647510) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa98cee02ae0, count: 250
End of stack trace.