panic: uvm_fault_unwire_locked: address not in map
Starting stack trace...
panic(ffffffff8308b530) at panic+0x1ba sys/kern/subr_prf.c:229
uvm_fault_unwire_locked(fffffd806c22b010,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1694
uvm_fault_unwire(fffffd806c22b010,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657
kern_sysctl(ffff80003765dc74,3,20000000,ffff80003765dca8,0,2e,70694645649a1261) at kern_sysctl+0xc4c
sys_sysctl(ffff80002a4c3bf0,ffff80003765dde0,ffff80003765dd30) at sys_sysctl+0x425
syscall(ffff80003765dde0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7af602c93a0, count: 250
End of stack trace.