panic: uvm_fault_unwire_locked: address not in map
Starting stack trace...
panic(ffffffff830979a8) at panic+0x1ba sys/kern/subr_prf.c:229
uvm_fault_unwire_locked(fffffd806c903dd0,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1694
uvm_fault_unwire(fffffd806c903dd0,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657
kern_sysctl(ffff800037608e24,2,20000100,ffff800037608e58,0,37,e4d79f1af1bc57b) at kern_sysctl+0xc4c
sys_sysctl(ffff80003761c020,ffff800037608f90,ffff800037608ee0) at sys_sysctl+0x425
syscall(ffff800037608f90) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x43c42ae9c0, count: 250
End of stack trace.