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CONTAP-538915: ONTAP cluster node reboots unexpectedly: WAFL hung for dataFA_8_p0_i1 with CP timeout value 120 in SK process wafl_exempt14 (FlexCache-related)

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ontap-9
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Issue

In certain ONTAP builds/environments, the system may reboots unexpectedly and reboot with a message similar to:
"WAFL hung for dataFA_8_p0_i1 with CP timeout value 120 in SK process wafl_exempt14 on release R9.18.1xN_250902_0400 (C) on Tue Sep 9 23:58:30 EDT 2025”
Impact: controller reboot / disruption to client workloads and potential performance degradation.

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