secpath_cache slab object is consuming very high memory.

Solution Verified - Updated -

Issue

  • Severe kernel memory leak in secpath_cache when elliptic curves are used.
  • Kernel panic - not syncing: System is deadlocked on memory due to secpath_cache slab.
  • secpath_cache slab object leaks kernel memory.

Environment

  • Red Hat Enterprise Linux 8.5
  • kernel-4.18.0-348.el8 ~ kernel-4.18.0-348.7.1.el8
  • strongswan application

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