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Bug 1250184

Summary:	Exhausting available inotify watches can result in inability to login
Product:	Red Hat Enterprise Linux 7	Reporter:	Matt Newsome <mnewsome>
Component:	glib2	Assignee:	Colin Walters <walters>
Status:	CLOSED WONTFIX	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	7.2
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-15 07:35:49 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 Matt Newsome 2015-08-04 16:48:41 UTC

Description of problem:

RHEL7 CSB gdm logins would spin infinitely after password entry, never authenticating the user back in. A symptom was the GUI for the login prompt would lack the word "Password:" when it presented.

Disabling software using lots of inotify watches results in the ability to login again.

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

accountsservice-0.6.35-7.el7.x86_64

How reproducible:

With software maxing out inotify watches, every time.

Steps to Reproduce:
1. Use more inotify watches than the RHEL7 CSB default max
2. Lock GNOME desktop (top right menu -> Lock)
3. Try to authenticate

Actual results:

Spins forever

Expected results:

Authenticates

Additional info:

Adding these lines to /etc/sysctl.d/00-local.conf resolves the issue:

fs.inotify.max_queued_events = 65535
fs.inotify.max_user_instances = 65535
fs.inotify.max_user_watches = 65535

Comment 4 RHEL Program Management 2020-12-15 07:35:49 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.