uvm_fault(fffffd806b1306f8,1b2fa20000,0,1) at uvm_fault+0x255 sys/uvm/uvm_fault.c:637
upageflttrap(ffff800033f3b290,1b2fa20000) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800033f3b290) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x77c6c145c8d0, count: -22
ddb{0}> machine ddbcpu 1
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x680
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x77c6c145c8d0, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x77c6c145c8d0, count: -1