Bug 1858220

Summary:	Revert workaround for #1819152
Product:	Red Hat Enterprise Linux 8	Reporter:	Michal Sekletar <msekleta>
Component:	systemd	Assignee:	Jacek Migacz <jmigacz>
Status:	CLOSED ERRATA	QA Contact:	Frantisek Sumsal <fsumsal>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	8.3	CC:	dtardon, jamacku, systemd-maint-list
Target Milestone:	rc	Keywords:	Reopened, Triaged
Target Release:	8.0
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	systemd-239-59.el8	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-11-08 10:49:17 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 Michal Sekletar 2020-07-17 09:23:57 UTC

Description of problem:
In RHEL-8.2 we introduced workaround for kernel bug #1819152. Since RHEL-8.3 kernel contains the fix we can drop the workaround.

Version-Release number of selected component (if applicable):
systemd-239-30.el8_2


How reproducible:
always

Steps to Reproduce:
0. Use machine with 4 CPUs
1. grubby --update-kernel=$(grubby --default-kernel) --args=systemd.unified_cgroup_hierarchy
2. reboot
3. echo "+cpuset" > /sys/fs/cgroup/cgroup.subtree_control
4. mkdir /sys/fs/cgroup/test
5. sleep infinity &
6. echo $! > /sys/fs/cgroup/test/cgroup.procs
7. echo -n "0 2-3" > /sys/fs/cgroup/test/cpuset.cpus

Expected results:
If above steps pass w/o any issues (i.e. kernel accepts space as a separator in cpuset mask) it is safe to revert the patch.

Comment 6 RHEL Program Management 2022-01-17 07:27:00 UTC

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.

Comment 10 Plumber Bot 2022-05-09 12:35:26 UTC

fix merged to github master branch -> https://github.com/redhat-plumbers/systemd-rhel8/pull/267

Comment 15 errata-xmlrpc 2022-11-08 10:49:17 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 (systemd 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-2022:7727