The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

2.2.15 ib_core Fails to Unload when the RDMA Service Is Stopped

If you stop the rdma service, the ib_core module fails to unload and the error Failed to unload ib_core is reported. If you change the configuration of the rdma service, you must reboot the system. (Bug ID 21411321)

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