segfault libglib

Bug #1272910 reported by tjoen on 2014-01-26
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
LightDM GTK+ Greeter
Fix Released
High
Sean Davis

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

tjoen (tjoen) wrote :

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

Simon Steinbeiß (ochosi) wrote :

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

tjoen (tjoen) wrote :

@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 :

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 :

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.

Changed in lightdm-gtk-greeter:
status: New → In Progress
importance: Undecided → High
assignee: nobody → Sean Davis (smd-seandavis)
Sean Davis (bluesabre) on 2014-03-02
Changed in lightdm-gtk-greeter:
status: In Progress → Fix Released
milestone: none → 1.8.2
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