panic: trap type 4, code=0, pc=ffffffff81ad91f1
Starting stack trace...
panic(ffffffff82febd87) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff8000372da590) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
icmp_mtudisc_timeout(fffffd8064cff9b0,0) at icmp_mtudisc_timeout+0x111 sys/netinet/ip_icmp.c:1073
rt_timer_queue_flush(ffffffff8357d528) at rt_timer_queue_flush+0x281 sys/net/route.c:1573
ip_sysctl(ffff8000372da84c,1,0,ffff8000372da878,20001300,4) at ip_sysctl+0x7b4 sys/netinet/ip_input.c:1730
net_sysctl(ffff8000372da844,3,0,ffff8000372da878,20001300,4,7796e8250734a31d) at net_sysctl+0x64a sys/kern/uipc_domain.c:248
sys_sysctl(ffff8000ffffccb8,ffff8000372da9b0,ffff8000372da900) at sys_sysctl+0x425
syscall(ffff8000372da9b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000372da9b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3fe1fe68770, count: 247
End of stack trace.