Apr 11 13:46:06 ip-172-31-84-92 kernel: [1356823.587223] INFO: task dockerd-default:1548 blocked for more than 120 seconds.

1055 ?  Dsl  5684:45 /usr/bin/dockerd-default --bip=10.192.0.1/16 --fixed-cidr=10.192.0.0/16 --group=docker --pidfile=/var/run/docke.pid --storage-driver=overlay --raw-logs