465652 - Buffer overflow at exception handler. CRASHES! Potential heap overflow. Firewall preventing full internet speed in Firefox only. Internet speed limited.

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Jason]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4

Starting Firefox at full internet speed on Local Area Connection and attempt to load Myspace.com. Myspace.com failed to reply to the request until the mouse was moved. Then an attempt to load facebook.com failed, but did not return an error page or a reset connection...the loading of the website stalled (not the browser). Attempted to use Firefox alone and close any application process/updater to gain exclusive access to the internet...and the operation was unsuccessful. Potential loss of temporary files and saved cookies for each website not loaded correctly and timing out.

Reproducible: Always

Steps to Reproduce:
1. Tried safe mode in Windows Vista SP1 x86 Firefox/3.0.4
2. Tried Standard mode in Windows XP SP3 x86 Firefox/3.0.4
3. Tried Standard mode in Apple Mac OSX 10.5 Firefox/3.0.4
Actual Results:  
Same results in all three operating systems. Using most current version. Some other websites performed okay, ones that had very little scripts/multimedia to load. 

Expected Results:  
It should have executed each web page fine. For some reason, the scripts seem to load very slow and the internet access with Firefox is slowed down and the internet connection skips itself from time to time.

There were default themes located on Windows XP and Mac OSX 10.5 tests. Noia 2.0 Extreme 2.0 on Windows Vista. Same result on all three machines.

Machine 1: Windows Vista SP1 x86: Intel x64 Celeron 2.0 GHz -- 1GB RAM
Machine 2: Windows XP SP3 x86: Intel Pentium 4 2.0 GHz -- 768MB RAM
Machine 3: Mac OSX 10.5: PowerPC 2.0 GHz -- 2GB RAM

Comment 1

[Brandon Sterne (:bsterne)]

I'm not seeing anything specific in your report that supports the crash and buffer overflow statements in the bug title.  There also isn't enough data to reproduce the issue (the two sites you mentioned load fine for me using 3.0.4 on several platforms).

Do you have crash IDs that you can share with us?  You can find these by typing about:crashes in your location bar.

It's also possible that you have some add-ons installed that are behaving badly with the content from the sites you referenced.

Comment 2

[Daniel Veditz [:dveditz]]

For issues like this that affect different people in varying ways your best bet is http://support.mozilla.com -- the techs there gather input from lots of people in the forums and piece together the clues to figure out what the underlying conditions and causes are. Only then do we have any hope of fixing it.

Comment 3

[Jason]

Crash Reason	EXCEPTION_ACCESS_VIOLATION
Crash Address	0x6b48f76b
ID: f09a75cb-bcb1-495e-85ea-a63920081118
Signature: @0x6b48f76b

Crash Reason	EXCEPTION_ACCESS_VIOLATION
Crash Address	0x6b97f76b
ID: 5d6ccc8f-52bb-4a9a-9ea3-acf320081118
Signature: @0x6b97f76b

Memory access exceptions include overwrite of function pointers such as networking/pipelining. Either that or i will be determining if my opcode is correct then.

Comment 4

[Jason]

The parse issue on application/http-index-format may still be remnant also.

Comment 5

[timeless]

please try safe mode. you seem to have RocketDock and FoxyTunes among others... this is almost certainly not our fault.

Comment 6

[Jason]

There are more issues with this same problem than just the two crashes. I am talking serious drill down within code. If I can muster different information, I'll re-post later! I'll experiment more reproducibility.

As you can see above 'timeless' I was in safe mode on Windows Vista when I had the key problem I am trying to comply.

Comment 7

[timeless]

http://support.mozilla.com/en-US/kb/Safe+Mode

Comment 8

[Jason]

How do you think that I got the idea of the major issue in the first place?

Comment 9

[timeless]

i have no clue. all i know is that the crash reports *you* submitted indicate those two extensions are loaded in your process.

if you aren't willing to do as we request, then dveditz is correct you should use http://support.mozilla.com/

Comment 10

[Jason]

I actually researched the problem with another forum. It was a pipelining issue with 'network.http.pipelining.maxrequests' was set too high. The value was reset and 'network.http.max-persistent-connections-per-server' was set too high as well. These values being set too high were erroneously set by the browser extension "FasterFox" and as a result I have decided to use no performance enhancing add-ons in my browser.