IB Errors: Kernel: IB0: ipoib_cm_handle_tx_wc: failed cm send event: vend_err 81 (Doc ID 1991608.1)

Last updated on JULY 13, 2017

Applies to:

Linux OS - Version Oracle Linux 5.8 with Unbreakable Enterprise Kernel [2.6.39] to Oracle Linux 6.9 with Unbreakable Enterprise Kernel [3.8.13] [Release OL5U8 to OL6U9]
Linux OS - Version Oracle Linux 6.6 with Unbreakable Enterprise Kernel [3.8.13] to Oracle Linux 7.3 with Unbreakable Enterprise Kerne [4.1.12] [Release OL6U6 to OL7U3]
Linux x86-64

Symptoms

In InfiniBand client, follow IB errors were seen for many hours:

 

Cause

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