Why is sssd_be showing memory leak in Red Hat Enterprise Linux 7.1?

Solution Unverified - Updated -

Issue

  • After updating sssd packages to the version sssd-1.12.2-58.el7_1.14.x86_64, We are observing rise in memory consumption by sssd_be process. We also observed sssd has had high cpu and memory usage.
  • To debug this, we ran a simple ssh login script which generates a number of ssh logons to a system. While running this, sssd cpu usage goes to 99% and memory usage is constantly increasing, up to a point where all memory and swap is consumed. Stopping the ssh loop script does not result in any released memory, only a restart of sssd releases the memory.

Environment

  • Red Hat Enterprise Linux 7.1
  • sssd-1.12.2-58.el7_1.14.x86_64
  • sssd-ad provider

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