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CONTAP-32819: Memory leak issue in Anti-ransomware

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Issue

  • A memory leak issue is identified in the Anti-ransomware feature.
  • This leak occurs on a system having one or more volumes in an anti-ransomware-enabled state.
  • This leak doesn't occur if the volume is in an Anti-ransomware disabled, learning (dry-run), or paused state.
  • The total amount of memory leaked over time can result in system disruption with a string "Process mgwd unresponsive for 210 seconds".
  • For the cumulative memory leak to cause the system reboot, the system should have received millions of file-create operations or many terabytes of high-entropy data via write-operations.
  • Post disruption, the system will reboot to a normal state and all the volumes will come online.

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