panic: trap type 4, code=0, pc=ffffffff81d869d0
Starting stack trace...
panic(ffffffff823be2d5) at panic+0x14c sys/kern/subr_prf.c:218
kerntrap(ffff800021321e20) at kerntrap+0x1d7 sys/arch/amd64/amd64/trap.c:295
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pfi_ifhead_RB_REMOVE(ffffffff828f1df0,ffff800000b92700) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80
pfi_detach_ifgroup(ffff800000b35500) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline]
pfi_detach_ifgroup(ffff800000b35500) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304
if_delgroup(ffff800000b4a000,ffff800000b35500) at if_delgroup+0x193 sys/net/if.c:2679
if_detach(ffff800000b4a000) at if_detach+0x1ab sys/net/if.c:1042
tun_clone_destroy(ffff800000b4a000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325
if_clone_destroy(ffff8000213220d0) at if_clone_destroy+0x146 sys/net/if.c:1201
tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:476
spec_close(ffff8000213221a0) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd80784854e8,7,fffffd807f7bf7e0,ffff8000233f0550) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177
vn_closefile(fffffd806a783870,ffff8000233f0550) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd806a783870,ffff8000233f0550) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614
fdrop(fffffd806a783870,ffff8000233f0550) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd806a783870,ffff8000233f0550) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff8000233f0550) at fdfree+0xf4 sys/kern/kern_descrip.c:1195
exit1(ffff8000233f0550,0,0,1) at exit1+0x320 sys/kern/kern_exit.c:197
sys_exit(ffff8000233f0550,ffff800021322430,ffff800021322480) at sys_exit+0x16 sys/kern/kern_exit.c:95
syscall(ffff800021322500) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021322500) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:566
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe1d70, count: 237
End of stack trace.