panic: uvm_fault_unwire_locked: address not in map
Starting stack trace...
panic(ffffffff83091edc) at panic+0x1ba sys/kern/subr_prf.c:229
uvm_fault_unwire_locked(fffffd806c20f6f0,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1694
uvm_fault_unwire(fffffd806c20f6f0,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657
kern_sysctl(ffff8000376fb1f4,2,20000180,ffff8000376fb228,20000340,17,b9f7a9189be4573e) at kern_sysctl+0xc4c
sys_sysctl(ffff80002a53f708,ffff8000376fb360,ffff8000376fb2b0) at sys_sysctl+0x425
syscall(ffff8000376fb360) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf99f0426210, count: 250
End of stack trace.