uvm_fault(fffffd80675a63f0,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff800036825600,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800036825600) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x79497d9e69d0, count: -22
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: 0x7f5632fa0b00, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7f5632fa0b00, count: -1