What does the message "trace_printk() being used. Allocating extra memory." mean?

Solution Unverified - Updated -

Issue

  • When booting system, the following messages can be seen in /var/log/messages:
**********************************************************
**   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
**                                                      **
** trace_printk() being used. Allocating extra memory.  **
**                                                      **
** This means that this is a DEBUG kernel and it is     **
** unsafe for production use.                           **
**                                                      **
** If you see this message and you are not debugging    **
** the kernel, report this immediately to your vendor!  **
**                                                      **
**   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
**********************************************************

Environment

  • Red Hat Enterprise Linux 8

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