RHEL7.3: System panic when booted with more than 9TB of RAM

Solution Verified - Updated -

Issue

  • We could not boot a RHEL7.3 kernel on 12TB memory system due to a kernel panic. The kernel could be booted up with 9TB memory.
  • While the boot sequence, kernel reports vmalloc allocation failure and it shows Mem-Info.

Environment

  • Red Hat Enterprise Linux (RHEL) 7.3
  • more than 9TB of RAM

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