415dddb9af
In multi-threaded scenarios, any thread that attempts to read a CQ when there's a pending error CQ entry gets an -FI_EAVAIL. Without any serialization here (which is okay, since libfabric will protect access to critical CQ objects), all threads proceed to read from the error CQ, but only one thread fetches the entry while others get -FI_EAGAIN indicating an empty queue, which is not erroneous. Signed-off-by: Raghu Raja <craghun@amazon.com>