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CONTAP-112729: ONTAP cluster node reboots unexpectedly

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ontap-9
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core
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Issue

ONTAP cluster node reboots unexpectedly with the following message. Examples:
thread (ib_cm_5) on cpu 4 hung for 4001 milliseconds in process ib_cm_5 on release 9.13.1P18 (C)
thread (defer_thr) on cpu 4 hung for 4001 milliseconds in process defer_thr on release 9.13.1P18 (C)

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