IPoIB: IP over Infiniband crashes on Red Hat Enterprise Linux 7.5

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Issue

Panic on RHEL 7.5 in ipoib_start_xmit() in the ib_ipoib driver.
On RHEL 7.5 using IP networking over Infiniband infrastructure crashes system.

Environment

Red Hat Enterprise Linux (RHEL) 7.5
ib_ipoib

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