One of the FreeBSD buildbots (koobs-freebsd9) just failed on a 2.7 build due to this issue.

Full log attached, as the bug is intermittent and non-deterministic (though appears more likely during high build host loads).

This issue no longer 'needs patch' as it has was committed to default (3.5)

This really needs to be backported to the rest of supported bugfix branches as soon as possible (along with the cross-build regression outlined in issue 22809 (a duplicate of 22625)