uvm_fault(fffffd8071e283e8,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c421090,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c421090) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x77c5c860a690, count: -21
ddb{0}> machine ddbcpu 1
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7dcc690f5250, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7dcc690f5250, count: -1