[    1.626330] make (198) used greatest stack depth: 12800 bytes left
[    1.959251] ip (246) used greatest stack depth: 12352 bytes left
[    2.568631] ip (277) used greatest stack depth: 12320 bytes left
[  644.398028] ip (22340) used greatest stack depth: 12304 bytes left
[  734.732093] blackhole_netdev_xmit(): Dropping skb.
[  734.732141] blackhole_netdev_xmit(): Dropping skb.
[  734.732171] blackhole_netdev_xmit(): Dropping skb.
[  734.732203] blackhole_netdev_xmit(): Dropping skb.
[  740.628064] blackhole_netdev_xmit(): Dropping skb.
[  740.628121] blackhole_netdev_xmit(): Dropping skb.
[  740.628150] blackhole_netdev_xmit(): Dropping skb.
[  740.628191] blackhole_netdev_xmit(): Dropping skb.
[  749.564956] blackhole_netdev_xmit(): Dropping skb.
[  749.565005] blackhole_netdev_xmit(): Dropping skb.
[  749.565035] blackhole_netdev_xmit(): Dropping skb.
[  749.565061] blackhole_netdev_xmit(): Dropping skb.
[  866.649078] blackhole_netdev_xmit(): Dropping skb.
[  866.649156] blackhole_netdev_xmit(): Dropping skb.
[  866.649197] blackhole_netdev_xmit(): Dropping skb.
[  866.649233] blackhole_netdev_xmit(): Dropping skb.
[  948.172424] blackhole_netdev_xmit(): Dropping skb.
[  948.172490] blackhole_netdev_xmit(): Dropping skb.
[  948.172522] blackhole_netdev_xmit(): Dropping skb.
[  948.172559] blackhole_netdev_xmit(): Dropping skb.