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Description of problem:

Currently, RHEL9 doesn't enable the dwarf5(CONFIG_DEBUG_INFO_DWARF5) and compressed(CONFIG_DEBUG_INFO_COMPRESSED) debug info.


Reference: https://lkml.org/lkml/2020/11/3/2156

DWARF5 wins significantly in terms of size when mixed with compression(CONFIG_DEBUG_INFO_COMPRESSED).

363M    vmlinux.clang12.dwarf5.compressed
434M    vmlinux.clang12.dwarf4.compressed
439M    vmlinux.clang12.dwarf2.compressed
457M    vmlinux.clang12.dwarf5
536M    vmlinux.clang12.dwarf4


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


How reproducible:
Always.

# CONFIG_DEBUG_INFO_DWARF5 is not set


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:

CONFIG_DEBUG_INFO_DWARF5=y

Additional info:

We split this bug and open another bz#2014385 to enable compressed debug info.

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 (new packages: kernel), 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-2022:3907