Memory leak in the server due to McAfee's "mfeaack" module

Issue

• Memory utilization of the system increases 1GB per day.

• From the vmcore, a huge memory usage is observed on the server:

  
  crash> kmem -i
                  PAGES        TOTAL      PERCENTAGE
     TOTAL MEM  3042629      11.6 GB         ----
          FREE    95101     371.5 MB    3% of TOTAL MEM
          USED  2947528      11.2 GB   96% of TOTAL MEM <<--- 
        SHARED   661135       2.5 GB   21% of TOTAL MEM
       BUFFERS    26502     103.5 MB    0% of TOTAL MEM
        CACHED  1027230       3.9 GB   33% of TOTAL MEM
          SLAB    73412     286.8 MB    2% of TOTAL MEM
  
    TOTAL HUGE        0            0         ----
     HUGE FREE        0            0    0% of TOTAL HUGE
  
    TOTAL SWAP  6553599        25 GB         ----
     SWAP USED    10742        42 MB    0% of TOTAL SWAP
     SWAP FREE  6542857        25 GB   99% of TOTAL SWAP
  
  COMMIT LIMIT  8074913      30.8 GB         ----
     COMMITTED   588464       2.2 GB    7% of TOTAL LIMIT
  

• Only 7.21% (0.84 GB) memory is utilized by user-space processes out of the total memory on the server(11.6 GB) :

  crash> ps -G | tail -n +2 | cut -b2- | gawk '{mem += $8} END {print "total " mem/1048576 "GB"}'
  total 0.836407GB  <==
  

• No memory is allocated to the balloon driver:

  crash> sym balloon
  ffffffffc04733e0 (b) balloon [vmw_balloon]
  
  crash> pd (( struct vmballoon *)0xffffffffc04733e0)->size
  $1 = 0  <== 
  

• The issue starts right after loading McAfee's mfeaack module:

  [    9.966394] mfeaack: loading out-of-tree module taints kernel.
  [    9.966402] WARNING: module 'mfeaack' built without retpoline-enabled compiler, may affect Spectre v2 mitigation
  [    9.967016] mfeaack: module verification failed: signature and/or required key missing - tainting kernel
  [    9.969756] AAC rule matching/reporting engine initialized successfully
  [    9.969778] AAC module was inserted successfully. Version is - 10.5.1.1578  <<---