Roughly 10% of CTS test suite executions produce deadlocks, when running the suite in multiple threads.
For example, the suite has deadlocked with the following 2 tests stuck in execution:
Killing either of the test suite processes allows the other process to complete successfully. The deadlocks stall execution indefinitely.
Other tests that hang:
It looks like we shipped this as far back as 17.1, so it is not a new regression for 17.3.
*** Bug 101450 has been marked as a duplicate of this bug. ***