polkit and pkla-check-authorization process going TASK_UNINTERRUPTIBLE / DEFUNCT in Red Hat Enterprise Linux 7

Solution Verified - Updated -

Issue

  • journalctl and /var/log/secure continously shows below errors at authentication.

    Oct 10 08:10:11 localhost polkitd[1404]: /etc/polkit-1/rules.d/49-polkit-pkla-compat.rules:21: Error: Error spawning helper: Timed out after 10 seconds (g-io-error-quark, 24)
Oct 10 08:10:11 localhost polkitd[1404]: Error evaluating authorization rules
Oct 10 08:10:21 localhost polkitd[1404]: /etc/polkit-1/rules.d/49-polkit-pkla-compat.rules:21: Error: Error spawning helper: Timed out after 10 seconds (g-io-error-quark, 24)
Oct 10 08:10:21 localhost polkitd[1404]: Error evaluating authorization rules

  • Server going hung due to high load caused by pkla-check-authorization process going D state.

  • [pkla-check-auth] <defunct> seen in process list.

Environment

Red Hat Enterprise Linux 7
polkit-0.112-12.el7_3.x86_64
polkit-pkla-compat-0.1-4.el7.x86_64

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