A server running with MRGv2 kernel becomes unresponsive

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Issue

A server has been found on several occasions unresponsive and a crash has to be manually triggered
In the vmcore it has been observed that an important amount of the memory has been consumed by the filp slab

Environment

Red Hat Enterprise Linux 6.9
Red Hat Enterprise MRG Realtime
kernel version 3.10.0-693.21.1.rt56.607.el6rt.x86_64

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