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Bug 2052536

Summary:	hyphen in /usr/lib/sysctl.d/50-default.conf invalid argument
Product:	Red Hat Enterprise Linux 9	Reporter:	bugzilla
Component:	procps-ng	Assignee:	systemd-maint
Status:	CLOSED ERRATA	QA Contact:	Karel Volný <kvolny>
Severity:	medium	Docs Contact:	Šárka Jana <sjanderk>
Priority:	unspecified
Version:	9.0	CC:	dtardon, jpazdziora, jreznik, jrybar, msekleta, sjanderk, systemd-maint-list, zbyszek
Target Milestone:	rc	Keywords:	FeatureBackport, Triaged, ZStream
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	procps-ng-3.3.17-6.el9	Doc Type:	Enhancement
Doc Text:	.`sysctl` introduces identic syntax for arguments as `systemd-sysctl` The `sysctl` utility from the `procps-ng` package, which you can use to modify kernel parameters at runtime, now uses the same syntax for arguments as the `systemd-sysctl` utility. With this update, `sysctl` now parses configuration files that contain hyphens (`-`) or globs (`*`) on configuration lines. For more information about the `systemd-sysctl` syntax, see the `sysctl.d(5)` man page.	Story Points:	---
Clone Of:
Clones:	2121090 (view as bug list)		Environment:
Last Closed:	2022-11-15 11:12:39 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:
Bug Depends On:
Bug Blocks:	2121090

Description bugzilla 2022-02-09 14:09:31 UTC

Description of problem:

the leading minus/hyphen in /usr/lib/sysctl.d/50-default.conf and 50-redhat.conf cause "Invalid argument" errors.

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

RHEL 9.0 beta

procps-ng-3.3.17-4.el9.x86_64

How reproducible:

100%

Steps to Reproduce:
1. Run systemctl --system

Actual results:

# sysctl --system |grep Invalid
sysctl: setting key "net.ipv4.conf.all.rp_filter": Invalid argument
sysctl: setting key "net.ipv4.conf.all.accept_source_route": Invalid argument
sysctl: setting key "net.ipv4.conf.all.promote_secondaries": Invalid argument
sysctl: setting key "net.ipv4.conf.all.rp_filter": Invalid argument

Expected results:

Keys are set

Additional info:

I assume the packager believes the minus is a comment, as the offending keys have no value, so wouldn't work even if the hyphen was removed:

# egrep '^-' /usr/lib/sysctl.d/*
/usr/lib/sysctl.d/50-default.conf:-net.ipv4.conf.all.rp_filter
/usr/lib/sysctl.d/50-default.conf:-net.ipv4.conf.all.accept_source_route
/usr/lib/sysctl.d/50-default.conf:-net.ipv4.conf.all.promote_secondaries
/usr/lib/sysctl.d/50-default.conf:-net.ipv4.ping_group_range = 0 2147483647
/usr/lib/sysctl.d/50-default.conf:-net.core.default_qdisc = fq_codel
/usr/lib/sysctl.d/50-redhat.conf:-net.ipv4.conf.all.rp_filter

Comment 1 bugzilla 2022-03-23 11:50:36 UTC

any update, still not fixed as of today despite a major systemd version uplift

"dnf whatprovides" on those files returns systemd and redhat-release, so not sure where i got procps-ng from!

Comment 3 Zbigniew Jędrzejewski-Szmek 2022-03-31 13:06:26 UTC

"-" is a prefix used by systemd-sysctl for keys for which a warning should not be emitted.
sysctl from procps-ng does not understand this syntax, so it warns.
I think support for it was added in later versions of procps-ng, but I'm not sure if/when.

In general, there is no need to call sysctl. Just use systemd-sysctl.

Comment 4 David Tardon 2022-03-31 13:17:10 UTC

(In reply to Zbigniew Jędrzejewski-Szmek from comment #3)
> sysctl from procps-ng does not understand this syntax, so it warns.
> I think support for it was added in later versions of procps-ng, but I'm not
> sure if/when.

I already linked the relevant procps-ng issue when I switched this bug to procps-ng. But as it seems that hasn't been enough, I'll repeat it in a comment too: https://gitlab.com/procps-ng/procps/-/issues/191 . And here's the commit that implements the change: https://gitlab.com/procps-ng/procps/-/commit/474847ed35dda5fd4c33a717d8cc7c4d17b90232 .

Comment 17 errata-xmlrpc 2022-11-15 11:12:39 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 (procps-ng 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-2022:8276