uvm_fault(fffffd8069e63b90,20c0c000,0,1) at uvm_fault+0x238
kpageflttrap(ffff800022d61d80,20c0c000) at kpageflttrap+0x22e sys/arch/amd64/amd64/trap.c:277
kerntrap(ffff800022d61d80) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
pipe_write(fffffd8065dfd150,ffff800022d61ff8,0) at pipe_write+0x373 sys/kern/sys_pipe.c:561
dofilewritev(ffff8000261d0fc8,2,ffff800022d61ff8,0,ffff800022d620e0) at dofilewritev+0x19c sys/kern/sys_generic.c:375
sys_write(ffff8000261d0fc8,ffff800022d62098,ffff800022d620e0) at sys_write+0x83 sys/kern/sys_generic.c:295
syscall(ffff800022d62160) at syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800022d62160) at syscall+0x4c2 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x94cf982c920, count: -18