Red Hat Enterprise Linux 6 server Kernel crashes with "divide by zero error in 'find_busiest_group'" error
Issue
- A RHEL 6 system has a kernel panic on a divide by zero error in
find_busiest_group
, and it fails to boot. - A server hung unexpectedly with "divide by zero" error in
find_busiest_group
, and a reboot was required:
divide error
[...]
RIP [<ffffffff81053b65>] find_busiest_group+0x5c5/0xb20
RSP <ffff880028363c40>
- A crash core analysis of a vmcore following an unexpected reboot in RHEL 6 reveals the following exception RIP in its backtrace:
[exception RIP: find_busiest_group+1477]
Environment
- Red Hat Enterprise Linux 6.0
- Red Hat Enterprise Linux 6.1
- Red Hat Enterprise Linux 6.2
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