firefox crashed

Bug #109566 reported by Neilen Marais
2
Affects Status Importance Assigned to Milestone
firefox (Ubuntu)
Invalid
Medium
Hilario J. Montoliu (hjmf)

Bug Description

Binary package hint: firefox
“FIrefox hangs with 100% CPU on a site”
This site makes firefox completely unresponsive while using 100% :

http://www.google.com/search?q=m-audio+pro+keys+88&ie=UTF8

This is up to date Feisty i386.

Revision history for this message
Neilen Marais (neilenmarais) wrote :
Revision history for this message
Hilario J. Montoliu (hjmf) (hmontoliu) wrote : Report Needed

Thank you for the bug report.

Could you please try to obtain a backtrace by following the instructions on
[1], or upload the crash report that probably was generated during the crash
and that should be located at /var/crash/ to [2].

Also, Indicate which extensions/plugins do you have enabled, and please if this
crash is reproducible describe the steps that lead to it.

This will greatly aid us in tracking down your problem.

Thanks in advance

[1] https://wiki.ubuntu.com/MozillaTeam/Bugs
[2] https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/109566/+addcomment

description: updated
Changed in firefox:
assignee: nobody → hmontoliu
importance: Undecided → High
status: Unconfirmed → Needs Info
importance: High → Medium
Revision history for this message
Neilen Marais (neilenmarais) wrote :

Hi.

I tried by starting firefox in a fresh session, ie.

firefox -ProfileManager

in a terminal and created a new profile. The url still causes firefox to hang. I'm not sure how to get a crash report, since firefox doesn't actually crash, rather it becomes unresponsive and takes 100% CPU. Killing the process does not result in anything appearing in /var/crash.

Does this URL not cause similar behaviour for anyone else? It could be the flash plugin causing trouble; is it possible to temporarily disable it without uninstalling?

Revision history for this message
Alexander Sack (asac) wrote : Re: [Bug 109566] Re: firefox crashed

On Tue, Apr 24, 2007 at 06:31:11PM -0000, Neilen Marais wrote:
> Hi.
>
> I tried by starting firefox in a fresh session, ie.
>
> firefox -ProfileManager
>
> in a terminal and created a new profile. The url still causes firefox to
> hang. I'm not sure how to get a crash report, since firefox doesn't
> actually crash, rather it becomes unresponsive and takes 100% CPU.
> Killing the process does not result in anything appearing in /var/crash.
>
> Does this URL not cause similar behaviour for anyone else? It could be
> the flash plugin causing trouble; is it possible to temporarily disable
> it without uninstalling?
>

Please test if this is caused by extension. Run in safe-mode:

 # firefox -safe-mode

and see if this still happens.

Thanks,

 - Alexander

Revision history for this message
Neilen Marais (neilenmarais) wrote :

firefox -safe-mode exhibits the same behaviour.

On a side note, I ran that while my existing firefox instance was active, and lost all my settings! Luckily I had backups, but this seems to be a bug? Should I try reproduce and report it?

Revision history for this message
Hilario J. Montoliu (hjmf) (hmontoliu) wrote :

Please Neilen on the next crash can you upload the report located at /var/crash/

Thank you in advance.

Revision history for this message
Neilen Marais (neilenmarais) wrote :

hjmf: The problem is that firefox doesn't actually crash, it just hangs in an infinite loop, hence no crash report is created in /var/crash. Is there some way I can force-kill firefox such that a crash report created?

Revision history for this message
Hilario J. Montoliu (hjmf) (hmontoliu) wrote :

El vie, 27-04-2007 a las 07:30 +0000, Neilen Marais escribió:
> hjmf: The problem is that firefox doesn't actually crash, it just hangs
> ...

I see.

Try to run firefox with package firefox-dbg (or firefox-dbgsym)
*installed*. As follows:

~$ firefox -safe-mode -g 2>&1 | tee firefox.run.log

At gdb prompt type "run" to start the program; do whatever do you need
to do to force this behavior and once firefox freezes type at gdb
console 'ctrl-d' to get the prompt; then type:

(gdb) bt full
(gdb) thead apply all bt full

Exit and upload the firefox.run.log file.

Let's see if that will show any useful info.

Thanks in advance.

Revision history for this message
Neilen Marais (neilenmarais) wrote :

Hi,

My firefox has stopped crashing on that site. The only significant change that I've made had been to remove a very old flash plugin that was in my ~/.mozilla which meant that ff was using flash 7 and not the newer flash 9. I was unaware of this old flash plugin lying around, I wonder how it ever got there ;P What confuses me though is that before it still crashed when using -safemode? Surely it should have disabled the flash plugin in that case?

Anyway, I think this means we can close this bug.

Revision history for this message
Hilario J. Montoliu (hjmf) (hmontoliu) wrote :

Thank you Neilen Marais, closing then.

Changed in firefox:
status: Needs Info → Rejected
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