Kernel regression in head, now unusable for package building

Hi,

There seems to be a kernel regression in head,  that happened
somewhere between r343921 and r345991.
When launching "poudriere bulk -a",  the ssh session is terminated
when poudriere attempts to clone/start builders (tmpfs mounts, file
copying...),  the jails don't start and the consequence is that we
can't build any package.

Cheers,

Antoine (with hat: portmgr)