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    • https://kb.netapp.com/on-prem/ontap/Ontap_OS/FS_Issues/CONTAP-320933
      Issue A processor on the storage controller panicked as there was long running mpcleaner thread. Current thread which ran over 5 seconds resulted in a CPU hung panic i.e mpcleaner thread. Correctable ...Issue A processor on the storage controller panicked as there was long running mpcleaner thread. Current thread which ran over 5 seconds resulted in a CPU hung panic i.e mpcleaner thread. Correctable Machine Check Errors occur which indicate the issue between CPU and memory in L1/L2 cache. This is a not a hardware issue as there are zero count of CECC errors.