1261832 - Crash when dragging tab in e10s window

Status: RESOLVED INCOMPLETE

(Core :: Widget: Gtk, defect)

Description

[Tim]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36

Steps to reproduce:

Firefox Version: 47.0a2 2016-04-03
OS: Arch Linux x64
Kernel:  4.4.7
Graphics: Mesa DRI Intel(R) Sandybridge Desktop 11.1.2
Window manager: i3wm (i think this is important)

1. open new tab
2. load website
3. drag tab down
4. crash

Every website i have tried crashes (hacker news, youtube, reddit, facebook)


Actual results:

Firefox crashes.

Crash reports:
https://crash-stats.mozilla.com/report/index/8f67340f-ead7-4111-be25-8b1d42160404
https://crash-stats.mozilla.com/report/index/4d841a1c-6734-4609-8f7c-71a6c2160404
https://crash-stats.mozilla.com/report/index/ca1c64d2-647e-4985-a1ea-b3b102160404
https://crash-stats.mozilla.com/report/index/428bb4ef-1026-4baa-b8f8-801012160404


Still crashes with all addons disabled.
Does not crash in blank profile.
Does not crash with non-e10s window

The crash happens (in limited testing) in libdgk.so, libgtk.so, libgobject.so
This appears to be fixed in nightly.


Here is a copy of my about:troubleshooting:


Application Basics
------------------

Name: Firefox
Version: 47.0a2
Build ID: 20160403004049
Update Channel: aurora
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0
OS: Linux 4.4.7-pf x86-64
Multiprocess Windows: 6/6 (Enabled by default)
Safe Mode: true

Crash Reports for the Last 3 Days
---------------------------------

Report ID: bp-428bb4ef-1026-4baa-b8f8-801012160404
Submitted: 1 minute ago

Report ID: bp-ca1c64d2-647e-4985-a1ea-b3b102160404
Submitted: 11 minutes ago

Report ID: bp-4d841a1c-6734-4609-8f7c-71a6c2160404
Submitted: 21 minutes ago

Report ID: bp-8f67340f-ead7-4111-be25-8b1d42160404
Submitted: 21 minutes ago

Report ID: bp-895bdfe8-a7f8-4c7b-a19d-40ffc2160403
Submitted: 1 day ago

Report ID: bp-44317854-dfc8-47a8-a0c1-0bd3b2160403
Submitted: 1 day ago

Report ID: bp-8a32144a-8f44-4ffc-b53d-193752160403
Submitted: 1 day ago

Report ID: bp-a8a79569-c1b7-4f1f-a2bd-268c12160403
Submitted: 1 day ago

Report ID: bp-7240fe35-9d94-42f0-b533-a2c512160403
Submitted: 1 day ago

All Crash Reports

Extensions
----------

Name: Firefox Hello Beta
Version: 1.2.2
Enabled: true
ID: [e-mail]

Name: Multi-process staged rollout
Version: 1.0
Enabled: true
ID: [e-mail]

Name: Pocket
Version: 1.0
Enabled: true
ID: [e-mail]

Name: Disable Hello, Pocket & Reader+
Version: 0.4.4
Enabled: false
ID: [e-mail]

Name: Emoji Keyboard
Version: 1.2.4
Enabled: false
ID: @emojikeyboard

Name: FlashHider
Version: 0.9.1
Enabled: false
ID: [e-mail]

Name: HTTPS-Everywhere
Version: 5.1.5
Enabled: false
ID: [e-mail]

Name: millennials-to-snake-people-mozilla
Version: 1.2.0
Enabled: false
ID: @millennials-to-snake-people-mozilla

Name: New XKit
Version: 7.7.3-amo-unlisted
Enabled: false
ID: @new-xkit

Name: Reddit Enhancement Suite
Version: 4.6.1
Enabled: false
ID: jid1-xUfzOsOFlzSOXg@jetpack

Name: Restart
Version: 1.2.8
Enabled: false
ID: [e-mail]

Name: Simplified Tab Groups
Version: 0.4.0
Enabled: false
ID: [e-mail]

Name: Tab Wheel Scroll
Version: 20140723.1-signed
Enabled: false
ID: tabscroll@mthamil

Name: UAControl
Version: 0.1.3.1.1-signed
Enabled: false
ID: [e-mail]

Name: uBlock Origin
Version: 1.6.6
Enabled: false
ID: [e-mail]

Name: uMatrix
Version: 0.9.3.3
Enabled: false
ID: [e-mail]

Name: User-Agent JS Fixer
Version: 1.3.1-signed
Enabled: false
ID: {086e582e-455b-4289-bfab-e90da7c0558b}

Graphics
--------

Adapter Description: Intel Open Source Technology Center -- Mesa DRI Intel(R) Sandybridge Desktop
Asynchronous Pan/Zoom: wheel input enabled
Device ID: Mesa DRI Intel(R) Sandybridge Desktop
Driver Version: 3.0 Mesa 11.1.2
GPU Accelerated Windows: 0/6 Basic (OMTC)
Supports Hardware H264 Decoding: No
Vendor ID: Intel Open Source Technology Center
windowLayerManagerRemote: true
AzureCanvasAccelerated: 0
AzureCanvasBackend: cairo
AzureContentBackend: cairo
AzureFallbackCanvasBackend: none
CairoUseXRender: 0

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 1024000
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.parent_directory: /mnt/ramdisk/
browser.cache.disk.smart_size.enabled: false
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.frecency_experiment: 2
browser.download.importedFromSqlite: true
browser.places.smartBookmarksVersion: 7
browser.sessionstore.upgradeBackup.latestBuildID: 20160403004049
browser.startup.homepage_override.buildID: 20160403004049
browser.startup.homepage_override.mstone: 47.0a2
browser.urlbar.suggest.searches: true
browser.urlbar.userMadeSearchSuggestionsChoice: true
dom.apps.reset-permissions: true
dom.mozApps.used: true
extensions.lastAppVersion: 47.0a2
font.internaluseonly.changed: true
layers.acceleration.force-enabled: true
media.gmp-gmpopenh264.abi: x86_64-gcc3
media.gmp-gmpopenh264.lastUpdate: 1459593130
media.gmp-gmpopenh264.version: 1.5.3
media.gmp-manager.buildID: 20160403004049
media.gmp-manager.lastCheck: 1459772617
media.peerconnection.enabled: false
media.peerconnection.ice.default_address_only: true
network.cookie.prefsMigrated: true
network.http.pipelining: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.prefetch-next: false
places.history.expiration.transient_current_max_pages: 104858
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
plugin.state.flash: 1
privacy.donottrackheader.enabled: true
privacy.donottrackheader.value: 1
privacy.trackingprotection.introCount: 20
privacy.trackingprotection.ui.enabled: true
services.sync.declinedEngines:
services.sync.engine.prefs.modified: false
services.sync.lastPing: 1459756964
services.sync.lastSync: Mon Apr 04 2016 23:01:30 GMT+1000 (AEST)
services.sync.numClients: 1
storage.vacuum.last.index: 0

Important Locked Preferences
----------------------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.12
Version in use: 4.12

NSS
Expected minimum version: 3.23 Basic ECC
Version in use: 3.23 Basic ECC

NSSSMIME
Expected minimum version: 3.23 Basic ECC
Version in use: 3.23 Basic ECC

NSSSSL
Expected minimum version: 3.23 Basic ECC
Version in use: 3.23 Basic ECC

NSSUTIL
Expected minimum version: 3.23
Version in use: 3.23

Experimental Features
---------------------

Sandbox
-------

Seccomp-BPF (System Call Filtering): true
Seccomp Thread Synchronization: true
User Namespaces: false
Media Plugin Sandboxing: true



Expected results:

Tab thumbnail is dragged, tab can be moved to another window (or a new window if there was more than one tab)

Comment 1

[Tim]

Hi Karl, Kohei,
I'm not able to fix this myself but can definitely help out with testing etc.
Is there any other information that would be useful?

Comment 2

[Brad Lassey [:blassey] (use needinfo?)]

could you try resetting layers.acceleration.force-enabled to false?

Comment 3

[Tim]

(In reply to Brad Lassey [:blassey] (use needinfo?) from comment #2)
> could you try resetting layers.acceleration.force-enabled to false?

This appears to fix it.

Comment 4

[George Wright (:gw280) (needinfo me!)]

David, is this related to the work you did in bug 1247611?

Comment 5

[David Anderson [:dvander] - inactive, e-mail if emergency]

(In reply to George Wright (:gw280) (:gwright) from comment #4)
> David, is this related to the work you did in bug 1247611?

Very likely yeah. Tim, any chance you could try a recently nightly (Firefox 48)? We fixed a bunch of these issues there.

Comment 6

[Darkspirit]

Crash reports from comment 0 are gone.
One could run into such a problem when manually enabling the GPU process: bug 1415020 comment 8
By bug 1549965 the GPU process is enabled by default and we haven't seen similar reports.