566298 – x11-misc/lightdm-gtk-greeter-2.0.1: Greeter can hangs after getting SIGTERM with Gtk > 3.15.

Bug 566298 - x11-misc/lightdm-gtk-greeter-2.0.1: Greeter can hangs after getting SIGTERM with Gtk > 3.15.

Summary: x11-misc/lightdm-gtk-greeter-2.0.1: Greeter can hangs after getting SIGTERM w...

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	Current packages (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Markos Chandras (RETIRED)

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Depends on:
Blocks:

Reported:	2015-11-20 07:11 UTC by Mike Hiretsky
Modified:	2015-12-03 21:44 UTC (History)
CC List:	0 users

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Runtime testing required:	---

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Description Mike Hiretsky 2015-11-20 07:11:36 UTC

1. Lightdm wants to close a greeter and sends SIGTERM to it.
2. Greeter catches that signal and calls gtk_main_quit() to stop main gtk loop.
3. There is a gdk_flush() call inside gtk_main → it calls gdk_display_sync() → XSync() → deadlock.
4. Greeter hangs.

Reproducible: Always

Steps to Reproduce:
1. emerge =x11-libs/gtk+-3.16.7
2. emerge ligthdm-gtk-greeter
3. login by use lightdm
4. lock session by "dm-tool --lock"
5. unlock session by use lightdm
6. ps ax | grep lightdm-gtk-greeter
Actual Results:  
Many lightdm-gtk-greeter process after session lock/unlock.

Expected Results:  
One or no greeter process after login

This problem described at 
https://code.launchpad.net/~lightdm-gtk-greeter-team/lightdm-gtk-greeter/lp-1445461-leave-instance/+merge/258352.

Need to add configure option --enable-kill-on-sigterm.

Comment 1 Markos Chandras (RETIRED) gentoo-dev

2015-12-03 21:44:33 UTC

Fixed in 2.0.1-r1