panic: trap type 4, code=0, pc=ffffffff81006020
Starting stack trace...
panic(ffffffff82599aa9) at panic+0x16b sys/kern/subr_prf.c:229
kerntrap(ffff80002e5dc610) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:313
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
done_flush() at done_flush+0x38
vm_run(ffff80002e5dcb30) at vm_run+0x215 sys/arch/amd64/amd64/vmm.c:4562
vmmioctl(a00,c0205602,ffff80002e5dcb30,1,ffff8000ffff4540) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685
VOP_IOCTL(fffffd806ea59d80,c0205602,ffff80002e5dcb30,1,fffffd807f7d7750,ffff8000ffff4540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd80617ef980,c0205602,ffff80002e5dcb30,ffff8000ffff4540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525
sys_ioctl(ffff8000ffff4540,ffff80002e5dcc48,ffff80002e5dcc90) at sys_ioctl+0x4a2
syscall(ffff80002e5dcd10) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e5dcd10) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd9dfabb1760, count: 246
End of stack trace.