[BUG] Panic: Divide-by-zero in find_busiest_group()

Panic: Divide-by-zero in find_busiest_group()

Issue:

Kernel paniced on divide by zero error in find_busiest_group

Environment:

• Red Hat Enterprise Linux 6
• kernel-2.6.32-131.4.1.el6

Resolution:

Upgrade to kernel-2.6.32-220.13.1. For more information, see this advisory.

Root Cause:

Prior to this update, the find_busiest_group() function used sched_group->cpu_power in the denominator of a fraction with a value of 0. Consequently, a kernel panic occurred. This update should prevent the divide by zero in the kernel.

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