[    1.977075] ip (244) used greatest stack depth: 12384 bytes left
[    2.559425] ip (278) used greatest stack depth: 12352 bytes left
[  644.297237] ip (24537) used greatest stack depth: 12312 bytes left
[  796.335835] blackhole_netdev_xmit(): Dropping skb.
[  796.335914] blackhole_netdev_xmit(): Dropping skb.
[  796.335947] blackhole_netdev_xmit(): Dropping skb.
[  796.335983] blackhole_netdev_xmit(): Dropping skb.
[  954.404455] blackhole_netdev_xmit(): Dropping skb.
[  954.404514] blackhole_netdev_xmit(): Dropping skb.
[  954.404554] blackhole_netdev_xmit(): Dropping skb.
[  954.404585] blackhole_netdev_xmit(): Dropping skb.
[  998.955241] blackhole_netdev_xmit(): Dropping skb.
[  998.955321] blackhole_netdev_xmit(): Dropping skb.
[  998.955365] blackhole_netdev_xmit(): Dropping skb.
[  998.955419] blackhole_netdev_xmit(): Dropping skb.
[ 1094.938561] blackhole_netdev_xmit(): Dropping skb.
[ 1094.938633] blackhole_netdev_xmit(): Dropping skb.
[ 1094.938666] blackhole_netdev_xmit(): Dropping skb.
[ 1094.938697] blackhole_netdev_xmit(): Dropping skb.
[ 1097.566437] blackhole_netdev_xmit(): Dropping skb.
[ 1097.566504] blackhole_netdev_xmit(): Dropping skb.
[ 1097.566543] blackhole_netdev_xmit(): Dropping skb.
[ 1097.566581] blackhole_netdev_xmit(): Dropping skb.
[ 1098.308304] blackhole_netdev_xmit(): Dropping skb.
[ 1098.308386] blackhole_netdev_xmit(): Dropping skb.
[ 1104.527369] net_ratelimit: 2 callbacks suppressed
[ 1104.527381] blackhole_netdev_xmit(): Dropping skb.
[ 1104.527490] blackhole_netdev_xmit(): Dropping skb.
[ 1104.527537] blackhole_netdev_xmit(): Dropping skb.
[ 1104.527595] blackhole_netdev_xmit(): Dropping skb.
[ 1148.432491] blackhole_netdev_xmit(): Dropping skb.
[ 1148.432543] blackhole_netdev_xmit(): Dropping skb.
[ 1148.432576] blackhole_netdev_xmit(): Dropping skb.
[ 1148.432619] blackhole_netdev_xmit(): Dropping skb.
[ 1162.804587] blackhole_netdev_xmit(): Dropping skb.
[ 1162.804646] blackhole_netdev_xmit(): Dropping skb.
[ 1162.804683] blackhole_netdev_xmit(): Dropping skb.
[ 1162.804719] blackhole_netdev_xmit(): Dropping skb.
[ 1247.035255] blackhole_netdev_xmit(): Dropping skb.
[ 1247.035310] blackhole_netdev_xmit(): Dropping skb.
[ 1247.035340] blackhole_netdev_xmit(): Dropping skb.
[ 1247.035365] blackhole_netdev_xmit(): Dropping skb.