uvm_fault(fffffd806b7e1d78,200000001000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:677
kpageflttrap(ffff80002a34d480,200000001000) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff80002a34d480) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyin() at _copyin+0x57
syscall(ffff80002a34d8c0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a34d8c0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd9bff1822c0, count: -16
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd800cb6c588,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd800cb6c570,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd800cb6c570,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd8066e9cea8,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd8066e9cea8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff8000337fae40) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
namei(ffff8000337fae40) at namei+0x7ca sys/kern/vfs_lookup.c:250
unp_connect(ffff80000169a160,fffffd8061b26400,ffff80003c46a2d0) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff80000169a160,fffffd806102e400,fffffd8061b26400,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff80000169a160,fffffd8061b26400,ffff8000337fb0c8,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80003c46a2d0,3,ffff8000337fb248,8,ffff8000337fb300) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmsg(ffff80003c46a2d0,ffff8000337fb3b0,ffff8000337fb300) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603
syscall(ffff8000337fb3b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000337fb3b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x87178cdaa30, count: -15