Segmentation Fault occurs when a second window with Flash content is closed

[Gareth Hart]

Binary package hint: firefox-3.0

Intermittently when I am viewing flash video in a separate window, Firefox will freeze completely and must be killed. This is only an intermittent bug because it happens on odd occasions and only when the flash video is in a separate second window. Sometimes, if a second window with Flash content is opened this will also cause Firefox to crash in the same manner.

This crash occured when I was watching a programme on BBC iPlayer in a pop-out window, however it has occurred before and in previous installs of Ubuntu. I am currently using Firefox 3.0.7+nobinonly-0ubuntu1 on Jaunty Alpha 5 with Flash version 10,0,22,87 (64-bit Alpha) installed to ~/.mozilla/plugins/.

I managed to recreate the same problem on an older Ubuntu and Firefox version in a virtual machine by selecting the pop-out player option, which spawns a second window with Flash video content, closing the second window which caused the main window to freeze, which had to be forcibly quit.

What should have happened:

The second window should have closed when the close button is clicked, leaving the first window alone.

What actually happened:

The window completely froze and Firefox had to be forcibly quit. Both Firefox windows are killed and the session had to be restored.

ProblemType: Crash
Architecture: amd64
Disassembly: 0x7f5115dcdf3b:
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/lib/firefox-3.0.7/firefox
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0.7+nobinonly-0ubuntu1
ProcCmdline: /usr/lib/firefox-3.0.7/firefox
ProcEnviron:
 PATH=(custom, user)
 LANG=C
 SHELL=/bin/bash
Signal: 11
SourcePackage: firefox-3.0
Stacktrace: #0 0x00007f5115dcdf3b in ?? ()
StacktraceTop: ?? ()
ThreadStacktrace:

Title: firefox crashed with SIGSEGV
Uname: Linux 2.6.29-020629rc7-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev pulse pulse-access pulse-rt sambashare

[Apport retracing service (apport)]

StacktraceTop:?? ()

[Rolf Leggewie (r0lf)]

I don't see the freezes, but I can confirm the crash when closing the pop-up window. Here is a webpage for you to reproduce this issue. Go to http://metropolis.co.jp/ and click on the banner for the Metpod. The Metpod is in flash. Closing the Metpod window will crash the browser reliably for me.

[Rolf Leggewie (r0lf)]

This being flash and all (I hate Flash, with a passion), it's probably not a Firefox issue after all. I'll try and see if this can be reproduced with one of the free players.

[d2globalinc (shane-2710studios)]

I have the same issue, freeze issues w/ flash content as well as it seems to randomly crash firefox with "Segmentation fault" when closing a second window that contained flash. Could be Firefox, could be Flash 64bit plugin, or could also be PulseAudio system.. Not sure which is directly related. It seems to be happening more often now w/ latest version of firefox from repositories - w/ the flash plugin still the same version i've been using for the past few versions of firefox.. So I'm leaning towards some issue with Firefox.. Free players do not offer the same performance or options as the flash 10 64bit plugin.. Also flash is directly integrated into the web now - its not going away - and if the only other option is Silverlight - I'll take flash.. And when you develop a site w/ flash at least you know the flash content will look the same in firefox, IE, any browser - so that is also why I develop for it... If you dont like flash-ads - then get adblock plus ;)

[Gareth Hart (tghe-retford)]

Affects Firefox 3.5b4 in Karmic. A great website to get Firefox to segfault is http://www.getcloser.com/ and then click the listen live link which launches a new window. When the Flash content has loaded, and you close the new window - segmentation fault every time.

[Micah Gersten (micahg)]

Is this still occuring with the latest Firefox versions? Does it occur with the flashplugin-nonfree package from the repos? We don't support the 64 bit version of Flash from Adobe.

Thanks.

[Rolf Leggewie (r0lf)]

FWIW, I'm not seeing this anymore in Karmic

[Micah Gersten (micahg)]

@tghe-retford

Are you still seeing this with the latest updates on Karmic? Can you test 3.0 and 3.5?

[Gareth Hart (tghe-retford)]

I am no longer seeing crashes in the test cases above on firefox 3.5. Firefox 3.0 just seems to load up 3.5.

[Micah Gersten (micahg)]

-----BEGIN PGP SIGNED MESSAGE-----
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Thank you for the prompt response. Firefox 3.0 loads 3.5 in Karmic if
you have 3.5 open. Could you please try 3.0 with 3.5 closed? Thanks.

tghe-retford wrote:
> I am no longer seeing crashes in the test cases above on firefox 3.5.
> Firefox 3.0 just seems to load up 3.5.
>
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[Gareth Hart (tghe-retford)]

Sorry about that. Yes, got Firefox 3.0 to load and it too doesn't crash with the test cases from this bug report.

[Micah Gersten (micahg)]

This bug report is being closed due to your last comment regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status . Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.