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Bug 1642058 - Backport mutter Wayland text-input crash fix
Summary: Backport mutter Wayland text-input crash fix
Alias: None
Product: Fedora
Classification: Fedora
Component: mutter
Version: 29
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Florian Müllner
QA Contact: Fedora Extras Quality Assurance
Whiteboard: AcceptedFreezeException
Depends On:
Blocks: F29FinalFreezeException
TreeView+ depends on / blocked
Reported: 2018-10-23 13:39 UTC by Jonas Ådahl
Modified: 2018-10-26 11:50 UTC (History)
10 users (show)

Fixed In Version: mutter-3.30.1-5.fc29
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-10-26 11:50:49 UTC
Type: Bug

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
GNOME Gitlab mutter issues 353#note_353 0 None None None 2018-10-23 13:39:29 UTC

Description Jonas Ådahl 2018-10-23 13:39:30 UTC
Description of problem:
GNOME Shell is prone to crash when switching focus and using input methods. See .

Backport the crash fix.

Comment 1 Stephen Gallagher 2018-10-23 15:20:09 UTC
Could you provide some specific steps to reproduce the crash? The description is rather sparse.

Comment 2 Jonas Ådahl 2018-10-23 15:29:55 UTC
I haven't reproduced it myself, but the reporter upstream have tested the patch.

A description of how to reproduce, as written by the upstream reporter is:

> By the way, crash occurred with high probability when moving focus from gnome-terminal to firefox, while executing app in terminal which frequently update last line to display some sort of progress message.

Comment 3 Jonas Ådahl 2018-10-23 17:21:29 UTC
Fix from upstream is backported to the f29 branch. Could be good to include in F29 thus requesting freeze exception. The impact of the bug is crashing the Wayland session when using input methods, though it is a race condition, and I don't know how often it is triggered, other than the reported reproduced it a couple of times a day.

Comment 4 Fedora Update System 2018-10-23 20:32:12 UTC
mutter-3.30.1-5.fc29 has been submitted as an update to Fedora 29.

Comment 5 Kamil Páral 2018-10-24 06:25:10 UTC
+1 FE

Comment 6 Petr Schindler 2018-10-24 06:27:44 UTC
+1 FE

Comment 7 Lukas Ruzicka 2018-10-24 06:28:12 UTC
Yeah, I have heard about some unexpected Wayland behaviour from a colleague, this can be connected to this.
Therefore +1 FE.

Comment 8 Kalev Lember 2018-10-24 06:28:58 UTC
+1 FE, makes sense to get simple crash fixes in as the compositor crashes are super user visible (they bring down the whole Wayland session with them).

Comment 9 Fedora Update System 2018-10-24 15:40:53 UTC
mutter-3.30.1-5.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report.
See for
instructions on how to install test updates.
You can provide feedback for this update here:

Comment 10 Kevin Read 2018-10-24 16:56:06 UTC
I might have this crash and be very easily able to trigger it. It happens to me about once every 30 minutes :( Gnome shell crashes for me with SIGABRT and I get tossed to the login manager. I upgrade to mutter-3.30.1-5 but still experience the issue. Unfortunately the backtrace is 1.3GB and it won't upload from the crash screen.

Is there any way I can help diagnose this?

Comment 11 Jonas Ådahl 2018-10-24 17:37:57 UTC
Kevin, does the backtrace match the one in the upstream issue? Does installing this: build fix the issue?

Comment 12 Kevin Read 2018-10-24 19:45:49 UTC
Jonas, no, it doesn't match upstream, so probably a different issue. I installed the 3.30.1-5 from that source but it didn't change the issue. To reproduce the crash I'm having I can close Eclipse 2018-09, that will always trigger it. Judging from the unsymbolicated backtrace I have it could be this issue:

Should I raise an issue here in Bugzilla?

Comment 13 Jonas Ådahl 2018-10-25 07:23:44 UTC
> Should I raise an issue here in Bugzilla?

I don't see why not. Remember to link to the upstream issue, assuming its the same. If you can, also provide a backtrace with debug symbols (sudo dnf debuginfo-install mutter, then coredumpctl -r gdb gnome-shell, then bt full) to the upstream bug it'd be great.

Comment 14 Fedora Update System 2018-10-26 11:50:49 UTC
mutter-3.30.1-5.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.

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