CPU 0 not receiving timer interrupts on RHEL5.6

Solution Unverified - Updated -

Issue

CPU 0 stops receiving timer and IRQ0 interrupts. This stalls the CPU, stops the jiffies counter from updating and prevents timers from expiring resulting in a system hang.

Environment

  • RHEL5.6
  • kernel 2.6.18-238.40.1.el5
  • Intel CPU
cpu family  : 6
model       : 47
model name  :        Intel(R) Xeon(R) CPU E7- 4860  @ 2.27GHz

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