Bug 145494

Summary:	Membership in too many groups prevents login ("getgroups: Invalid argument")
Product:	[Fedora] Fedora	Reporter:	Kenneth Porter <shiva>
Component:	openssh	Assignee:	Tomas Mraz <tmraz>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	2
Target Milestone:	---
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Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2005-01-31 16:19:28 EST	Type:	---
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Description Kenneth Porter 2005-01-18 17:25:06 EST

I edited /etc/group to add myself to another group, raising my total
to 33, and I was no longer able to log in. /var/log/secure reported
"fatal: getgroups: Invalid argument". Some googling revealed the
source of the problem, that getgroups returns EINVAL when the number
of groups exceeds a kernel limit (NGROUPS_MAX in
/usr/include/linux/limits.h).

I'm not sure what the best fix is, but one shouldn't be locked out of
logging in when another group is added to one's list. sshd should fail
in a more graceful way, for example allowing the login but without all
supplmentary groups available, and a warning issued to the login
terminal and the syslog.

See also bug 145492.

Comment 1 Tomas Mraz 2005-01-31 16:19:28 EST

It seems to be working fine in FC3.