During rapid succession "offline" or "online" of multiple processors, kdump may become disabled

Updated -

Issue

When multiple processors are "offlined" and "onlined" in rapid succession, kdump may become disabled on certain systems.

Environment

RHEL7
Kdump
Kexec-tools

Diagnoses

When this issue occurs, messages similar to the following may be seen in the syslogs:

Oct 22 16:15:50 test kdumpctl: kexec: loaded kdump kernel
Oct 22 16:1...

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