Firefox crash when page contains video (SIGSEV in __XRead)

[Joachim R.]

Any web page containing a video crash 100% of the time
The crash is triggered by :
 - auto-played video
 - closing a page with video playing
 - try to control video (start/stop/FFWD/RWD)

This occurs since Ubuntu 15.04 an still occurs after Ubuntu 15.10 dist-upgrade.

It is a show stopper for firefox, I'm forced to watch Youtube or whatever website with video with Chromium that doesn't have this issue.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: firefox 41.0.2+build2-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: jojo 2406 F.... pulseaudio
 /dev/snd/controlC0: jojo 2406 F.... pulseaudio
BuildID: 20151016093648
Channel: Unavailable
Date: Tue Nov 3 11:51:07 2015
DefaultProfileIncompatibleExtensions:
 English (GB) Language Pack - <email address hidden>
 English (South Africa) Language Pack - <email address hidden>
 Français Language Pack - <email address hidden>
 Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
DefaultProfilePlugins:
 IcedTea-Web Plugin (using IcedTea-Web 1.5.2 (1.5.2-1ubuntu2)) - /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so (icedtea-7-plugin)
 iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
DefaultProfilePrefErrors: 'utf-8' codec can't decode byte 0xe9 in position 3428: invalid continuation byte
DefaultProfilePrefSources:
 user.js
 [Profile]/<email address hidden>/defaults/preferences/prefs.js
 [Profile]/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/defaults/preferences/colorzilla.js
EcryptfsInUse: Yes
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2012-08-02 (1187 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 192.168.0.1 dev eth2 proto static metric 100
 169.254.0.0/16 dev eth2 scope link metric 1000
 192.168.0.0/24 dev eth2 proto kernel scope link src 192.168.0.21 metric 100
MostRecentCrashID: bp-03d2d124-b6c2-400f-b2ae-db2652150616
ProcEnviron:
 TERM=xterm-color
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
Profile1Extensions: extensions.sqlite corrupt or missing
Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile1Locales: extensions.sqlite corrupt or missing
Profile1PrefSources: prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profile2Extensions: extensions.sqlite corrupt or missing
Profile2IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile2Locales: extensions.sqlite corrupt or missing
Profile2PrefSources: prefs.js
Profile2Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile0 (Default) - LastVersion=41.0.2/20151016093648
 Profile1 - LastVersion=4.0/20110318052756 (Out of date)
 Profile2 - LastVersion=3.6.12/20101027124735 (Out of date)
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 icedtea-7-plugin 1.5.2-1ubuntu2
 rhythmbox-mozilla 3.2.1-1ubuntu3
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: yes
  Hard blocked: no
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: Upgraded to wily on 2015-10-30 (3 days ago)
dmi.bios.date: 08/12/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F21
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z77-D3H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF21:bd08/12/2013:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paul White (paulw2u)]

Joachim and anyone else affected,

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu and Firefox since that time.

Do you still see regular crashes when playing video? Please let us know if you do.

If we do not hear from you this bug report will expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

Paul White
[Ubuntu Bug Squad]

[Joachim R. (jro)]

No, I think the bug was solved by a Firefox update 2 years ago.
It was reproducible *anytime* with always the same stack trace in the same function. I'm sorry, it was very annoying but I forgot to close this report when it disappeared.

[Paul White (paulw2u)]

Thanks for your reply Joachim and for helping to close a target of 1000 untouched Firefox bugs.