LightDM GTK+ Greeter

segfault libglib

Bug #1272910 reported by tjoen on 2014-01-26

This bug affects 1 person

Affects

Status

Importance

Assigned to

Milestone

LightDM GTK+ Greeter

Fix Released

High

Sean Davis

LightDM GTK+ Greeter 1.8.2

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Affecting:	LightDM GTK+ Greeter
Filed here by:	tjoen
When:	2014-01-26
Confirmed:	2014-02-26
Assigned:	2014-02-26
Started work:	2014-02-26
Completed:	2014-03-02

Target

Distribution
Package	(Find…)
Project	(Find…)

Status	Importance	Milestone
	High	LightDM GTK+ Greeter 1.8.2

Assigned to

	Me
	Sean Davis (bluesabre)

Remote Watch

	None, the status of the bug is updated manually.
	None, the status of the bug is updated manually.
	Red Hat Bugzilla #1002782
	URL:

The information about this bug in Launchpad is automatically pulled daily from the remote bug.

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Bug Description

glib-2.38.2
lightdm-1.8.6
lightdm-gtk-greeter-1.6.1 recompiled in that order
System x86-32 LFS-like

# lightdm
[black screen with arrow and then X stops]
$ journalctl
...
Jan 26 13:58:09 localhost lightdm[14160]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jan 26 13:58:09 localhost systemd[1]: Starting Session c4 of user lightdm.
Jan 26 13:58:09 localhost systemd[1]: Started Session c4 of user lightdm.
Jan 26 13:58:09 localhost systemd-logind[134]: New session c4 of user lightdm.
Jan 26 13:58:09 localhost systemd-logind[134]: Linked /tmp/.X11-unix/X0 to /run/user/92/X11-display.
Jan 26 13:58:09 localhost kernel: lightdm-gtk-gre[14162]: segfault at bf24dff0 ip b6dc0909 sp bf24dff0 error 6 in libglib-2.0.so.0.3800.1[b6d38000+101
Jan 26 13:58:09 localhost lightdm[14160]: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jan 26 13:58:09 localhost systemd-coredump[14177]: Process 14162 (lightdm-gtk-gre) dumped core.
Jan 26 13:58:12 localhost systemd-logind[134]: Removed session c4.
..

Same result with lightdm-1.8.4
lightdm-gtk-greeter-1.7.1
glib-2.38.1

Other glib-programs no problems
I don't remember when lightdm stopped working but I think it was since upgrading to gnome-3.10.2

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Related branches

lp:ubuntu/trusty-proposed/lightdm-gtk-greeter

tjoen (tjoen) wrote on 2014-02-12:

If I remove everything in /var/lib/lightdm/ then lightdm starts.
# systemctl poweroff doesn't clean up the stale lock

Simon Steinbeiß (ochosi) wrote on 2014-02-15:

Since you're compiling it yourself, would you mind trying the most recent release? (1.8.x)

tjoen (tjoen) wrote on 2014-02-15:

@ochosi, I checked the release notes but didn't find the fedora patch applied.
https://bugzilla.redhat.com/show_bug.cgi?id=1002782

Problem there was solved the same way as I did: removing /var/lib/lightdm/*

Sean Davis (bluesabre) wrote on 2014-02-26:

Thanks for your bug report, it sure would be nice if downstreams would report these issues and fixes upstream where they could be found. I'll work on rolling these fixes in now.

Sean Davis (bluesabre) wrote on 2014-02-26:

Hi tjoen,

I've pulled in the Fedora fix with the latest revision.

https://bazaar.launchpad.net/~lightdm-gtk-greeter-team/lightdm-gtk-greeter/trunk/revision/241

Please let me know if this fixes your issue or if we need to investigate further.