RHEL6: System hung trying to obtain lock in __wake_up()

Solution In Progress - Updated -

Issue

  • Our customer encountered a kernel stall.
  • System experienced an unplanned outage and rebooted taking a vmcore due to the watchdog timer expiring.

Environment

  • Red Hat Enterprise Linux 6.1
    • kernel-2.6.32-131.12.1.el6.x86_64

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