Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.

Bug 1350060

Summary: [wayland-copr] Firefox exits with "Error 71 (Protocol error) dispatching to Wayland display." when showing any menu
Product: [Fedora] Fedora Reporter: Christian Stadelmann <fedora>
Component: firefoxAssignee: Martin Stransky <stransky>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 25CC: gecko-bugs-nobody, jhorak, pjasicek, stransky
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-06-01 20:10:01 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:
Bug Depends On:    
Bug Blocks: 1054334    
Attachments:
Description Flags
A backtrace from gdb attached to firefox from wayland copr
none
Output of $ LC_ALL=C WAYLAND_DEBUG=1 firefox none

Description Christian Stadelmann 2016-06-25 00:30:20 UTC 
Version-Release number of selected component (if applicable):
firefox-47.0-7.wayland.fc24.x86_64
gtk3-3.20.6-1.fc24.x86_64

How reproducible:
always after some mouse movement

Steps to Reproduce:
1. open firefox with wayland GDK backend
2. open bookmarks menu
3. move mouse over bookmarks menu

Actual results:
Firefox crashes.

Expected results:
No crash

Additional info:
Sadly, gdb doesn't catch this crash. Instead, I'm getting this warning on CLI:

(firefox:8063): Gdk-WARNING **: Error 71 (Protokollfehler) dispatching to Wayland display.
Comment 1 Christian Stadelmann 2016-06-25 00:32:54 UTC 
This crash also happens in the main menu (menu toolbar enabled by pressing the Alt key).
Comment 2 Christian Stadelmann 2016-06-25 10:18:37 UTC 
Context menus in about:config are affected too, so I guess it affects most if not all menus
Comment 3 Christian Stadelmann 2016-06-25 10:54:54 UTC 
Created attachment 1172224 [details]
A backtrace from gdb attached to firefox from wayland copr

Breaking on g_strerror and skipping some occurrences, I managed to get a backtrace. The error is being catched in https://github.com/GNOME/gtk/blob/master/gdk/wayland/gdkeventsource.c#L197
Comment 4 Christian Stadelmann 2016-06-27 19:46:42 UTC 
Also reported against Gtk+: https://bugzilla.gnome.org/show_bug.cgi?id=768111
Comment 5 Christian Stadelmann 2016-06-29 13:39:39 UTC 
Created attachment 1173920 [details]
Output of $ LC_ALL=C WAYLAND_DEBUG=1 firefox

According to upstream Gtk+ developer Jonas Ådahl [1]:

> As far as I can tell what is happening is that:
> 
> 1. a popup is created with the toplevel window as parent
> 2. another popup is created while the previous popup is still mapped, also with the toplevel window as parent
> 
> This is not allowed, as the compositor wouldn't know what to dismiss when the popup grab is broken.
> 
> I'm guessing that either firefox is
> 1) missing to destroy an old menu, or
> 2) using the wrong parent for a child menu, or
> 3) it accidentally creates two popups when it meant to create only one.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=768111#c5 and #c3
Comment 6 Christian Stadelmann 2017-02-15 20:56:00 UTC 
This issue is gone in Nightly builds for wayland, 52.0a1, BuildID 20170215004354, downloaded from https://firefox-flatpak.mojefedora.cz/ (created with build scripts from https://github.com/xhorak/firefox-devedition-flatpak)