Bug 2009205

Summary:	[FEAT]Enable the dwarf5 feature in rhel9 kernel
Product:	Red Hat Enterprise Linux 9	Reporter:	lijiang
Component:	kernel	Assignee:	lijiang
kernel sub component:	kexec - kdump	QA Contact:	Jie Li <jieli>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	dyoung, ruyang, xiawu
Version:	9.0	Keywords:	FutureFeature, Triaged
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	kernel-5.14.0-39.el9	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-17 15:40:31 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description lijiang 2021-09-30 07:36:51 UTC

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.

Comment 13 errata-xmlrpc 2022-05-17 15:40:31 UTC

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