Why does crash show "cannot find booted kernel -- please enter namelist argument" and fail to run?

Solution Verified - Updated -

Issue

  • crash fails with the following error:

    crash: cannot find booted kernel -- please enter namelist argument


Usage:

crash [OPTION]... NAMELIST MEMORY-IMAGE[@ADDRESS]   (dumpfile form)
crash [OPTION]... [NAMELIST]                    (live system form)

Enter "crash -h" for details.

Environment

  • Red Hat Enterprise Linux 7
  • invoking crash without any command arguments

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