143551 - Page doesn't finish loading and pegs cpu

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Dave]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0+) Gecko/20020508
BuildID:    2002050809

I'm filing this under networking, but it may be some kind of JS bug.

When I go to the above URL, there are some drop down menus that'll display the
message "Loading..." and then be populated by default values when the page
finishes loading... at least that's what it does under NS4.x. Under mozilla the
menus keep alternating between the default values and the "Loading..." text as
teh progress bar on the lower right hand corner of the browser moves over and
over again and the cpu remains near 100%. This behavior makes it impossible to
do anything with the page.

Reproducible: Always
Steps to Reproduce:
1. Simply go to the test URL.

Actual Results:  Page appears to go into some sort of infinite loop and never
finishes loading.

Expected Results:  Page should finish loading instead of doing the same thing
over and over.

Works on NS4.x

Comment 1

[Matthias Versen [:Matti]]

The URL doesn't work because you must login and the session ID is already ot of
date...

Comment 2

[Darin Fisher]

dave: can you please generate a HTTP log while reproducing this bug?

$ setenv NSPR_LOG_MODULES nsHttp:5
$ setenv NSPR_LOG_FILE http.log
$ /path/to/mozilla

the demo the problem, quit mozilla, and upload "http.log" to this bug report. 
if you could do this it might reveal the source of the problem... thx!!

Comment 3

[Dave]

No, that's not it... it's got some kind of stupid cookie thing going, I think.
Try the following:

1) Go to the url that's "expired"
2) Click on "Get A Value" from the black menu directly above the page
3) Click on "Try a free demonstration..." under "N.A.D.A. Official Used Car
Guide®  Online" heading
4) That's the page that won't load.

Comment 4

[Dave]

Attachment: http log for test page

Comment 5

[Dave]

Log generated while browser did the following:

1) Start
2) Load slashdot
3) Load test page
4) follow instructions I detailed in my last comment
5) Iterate through "infinite loop" several times.
6) Exit

Comment 6

[Darin Fisher]

dave: excellent.. thx for the quick response!  looking now...

Comment 7

[Darin Fisher]

ok, after looking at the log and trying out the site for myself, i think this is
probably not a networking bug.

-> maybe something DOM/JS related...

Comment 8

[Andrew Schultz]

I used JS Debugger to see what was going on...
I caught it in http://www.nada.com/b2b/VV/BScripts/leftscript.js

function redrawForNetscape(){
 // this causes netscape to repaint itself after the option boxes load.		
 // if this is not done then option boxes will not grow to fit text. 			 // **Note:
Since Soft reload this will not work if user has cache set to ZERO
 // (uses browser cache).     
 if (navigator.appName=='Netscape'){      
  setTimeout('history.go(0)', 1500);  // execute soft reload after 1.5 seconds
 }
 return;
}

looks like Evang -- Mozilla sizes the option boxes properly in the first place.

I'm still not sure why Mozilla is looping, but it might or might not be a bug.

Comment 9

[Daniel Clemente]

I can see it on Linux 2003012305 since a few days (maybe a week), using
http://correo.ozu.es
I have pipelining disabled; and my ISP has a transparent proxy, if that matters.

Comment 10

[Andrew Schultz]

the nada site worksforme with linux trunk build 20030123 and 1.0 release, so it
would appear that the site changed rather than Mozilla.

Dave: do you still see this problem?

Comment 11

[Dave]

You're right. The NADA web site doesn't appear to offer "free demonstrations"
anymore that I can see.

They have a used car pricing tool at http://www2.nadaguides.com that works with
1.2.1 (click on "Automobiles" under "What's it worth? Used prices and
information") , but I have no idea if it's the same as the other one.

As for correo.ozu.es, it WFM on 1.2.1, so that's probably a new problem and not
this one (unless it's a regression).

Comment 12

[Daniel Clemente]

Ok, I filed bug 190508 to trace the problem with http://correo.ozu.es (confirmed
both on Windows and Linux). It's a regression since it only affects recent
nightly builds.

Comment 13

[Andrew Schultz]

it works the same as in your comment 3

go here:
http://www.nada.com/b2b/getvalue/guide_2000.asp?s=
"For a demonstration of AuctionNet, please click here."

Comment 14

[Dave]

On 2003012408/Linux, the only problem I see with that page (the AuctionNet demo)
is that I can only view Jeeps because, for somereason, the make is in a
non-editable text box. However, I don't see the looping I described in the
original comment.

Is that the page you're talking about?

Comment 15

[Daniel Clemente]

I can't also reproduce this bug on nada pages (can someone put the buggy URL on
the URL field?); my problem is only the one described in bug 190508

Comment 16

[Andrew Schultz]

Dave: I figured that was the original search form you mentioned in comment 3,
but my memory is pretty foggy.

Anyway, the original page seems to not exist and nobody can reproduce this bug...

marking WORKSFORME
if you can find the original page and this bug is still present, please reopen.

Comment 17

[Dave]

Went back to the front page and managed to find the URL again. I'm on a Windows
box right now and not the Linux box I first saw the problem on, so I can't test.
However, even though I can get a drop down menu if I act quickly, I'm still
seeing the cycling which will then close the menu for me.

Here's how to get to the page:

1.) Go to http://www.nada.com
2.) Click on the link labelled www.nada.com/b2b (that's the actual URL, BTW).
3.) Once there, note the heading "New Visitors," under which is the sub heading
"N.A.D.A. Guides Online."
4.) Click on "Used Cars." under the above headings. This will take you directly
to the problem page. (Note that "New Cars" and "Commercial Trucks," probably
among others, also have the same problem).

Changing bug URL to be more general.

Comment 18

[Dave]

2003012711/Linux acts the same as what I saw on Windows. Page keeps reloading at
intervals.

Comment 19

[Johnny Stenback (:jst)]

Mass-reassigning bugs.

Comment 20

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven't been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.