panic: trap type 4, code=0, pc=ffffffff821bc8f2
Starting stack trace...
panic(ffffffff82fbe522) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff800030dfb720) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_msgrcv(ffff80002a48cf48,ffff800030dfb950,ffff800030dfb8a0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline]
sys_msgrcv(ffff80002a48cf48,ffff800030dfb950,ffff800030dfb8a0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349
syscall(ffff800030dfb950) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc79b272c860, count: 251
End of stack trace.