dmidecode is not working - /dev/mem: Permission denied for non root user.

Solution Verified - Updated -

Issue

  • Non(root) user failing to execute dmidecode command.
[test@RHEL7Virt ~]$ dmidecode 
# dmidecode 3.2
/sys/firmware/dmi/tables/smbios_entry_point: Permission denied
Scanning /dev/mem for entry point.
/dev/mem: Permission denied

Environment

  • Red Hat Enterprise Linux 6.
  • Red Hat Enterprise Linux 7.
  • Red Hat Enterprise Linux 8.
  • Red Hat Enterprise Linux 9.

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