uvm_fault(fffffd807f000000,20000000,0,1) at uvm_fault+0xc3e uvmfault_amapcopy sys/uvm/uvm_fault.c:242 [inline]
uvm_fault(fffffd807f000000,20000000,0,1) at uvm_fault+0xc3e sys/uvm/uvm_fault.c:559
pageflttrap(ffff800021f9d2b0,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
kerntrap(ffff800021f9d2b0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x4b
sys_connect(ffff800020e92768,ffff800021f9d478,ffff800021f9d4c0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff800021f9d540) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021f9d540) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x473997d4150, count: 243
End of stack trace.
Stopped at      db_enter+0x18:  addq    $0x8,%rsp