I've configured gpg2 with enable-ssh-support.
I works nicely when connecting to a host manually. However, when using the
provisioning framework Ansible, in order to configure my servers, the gpg-agent
crashes when I provision more than a few servers in parallel. This happens
during ~50% of my ansible runs, and the frequency increases with the numbers of
servers.
Under the hoods, ansible will initially setup connections to all hosts involved,
before continuing with actual provisioning, meaning lots of connections get
setup in parallel.
By the way, I use the ControlPersist and ProxyCommand options in ssh in order to
reuse connections that pass through a bastion.
Crash report from mac attached.