panic: trap type 4, code=0, pc=ffffffff81902fb2
Starting stack trace...
panic(ffffffff82fb8bfe) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002d9e34c0) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_msgrcv(ffff80002a55e548,ffff80002d9e36f0,ffff80002d9e3640) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline]
sys_msgrcv(ffff80002a55e548,ffff80002d9e36f0,ffff80002d9e3640) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349
syscall(ffff80002d9e36f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8347b89b30, count: 251
End of stack trace.