uvm_fault(fffffd806c391b68,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a3447b0,200000000000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a3447b0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7d9747a623f0, count: -21
ddb{0}> machine ddbcpu 1
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
proc_trampoline() at proc_trampoline+0xc7
end trace frame: 0x0, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end trace frame: 0x0, count: -1