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Description of problem:

When the tuned service applies profiles following a sighup it randomly duplicated lines in /etc/tuned/bootcmdline file.   

Version-Release number of selected component (if applicable):

- tuned-2.18.0-2.el8_6.1.noarch
- tuned-2.20.0-1.el8.noarch

(Customer did not experience with tuned 2.15.0-2.el8_4.1)


How reproducible:

random


Steps to Reproduce:
1. systemctl kill -s HUP tuned.service 
2. 
3.

Actual results:

/etc/tuned/bootcmdline contains extra lines at beginning of file such as:

   TUNED_BOOT_CMDLINE=""
   TUNED_BOOT_INITRD_ADD=""
   kernel boot command line and


Expected results:
/etc/tuned/bootcmdline is unchanged except for necessary profile adjustments

Additional info:

Upstream PR:
https://github.com/redhat-performance/tuned/pull/547

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (tuned bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:7182