I pushed this one to testing on December 8th, 2019, but forgot to assign to QA.

The same fix is also used in Cauldron, so it is heavily tested...

(S)RPM:
make-4.2.1-3.1.mga7


Advisory:

Under certain circumstances the make jobserver loses job tickets to other
jobservers that have a child that died, but they are blocked waiting for
a new ticket, so they aren't releasing (or re-using) the one that the
child death would free up. This causes for example kernel builds to slow
down, in worst case doubling the buildtime.

This update solves this by adding the upstream fix:
[SV 51159] Use a non-blocking read withpselect to avoid hangs