255729 - Browser consumes 100% of CPU

Status: RESOLVED WORKSFORME

(Core :: Layout: Images, Video, and HTML Frames, defect)

Description

[Braden]

The browser consumes 100% of the CPU--indefinitely--upon loading
<http://www.freedrinkingwater.com>.

Comment 1

[Andrew Schultz]

Attachment: testcase

<img name="refer" src="http://www.mozilla.org/images/mozilla-banner.gif"      
onLoad="JavaScript:
refer.src='http://www.mozilla.org/images/mozilla-banner.gif'">

Comment 2

[Andrew Schultz]

confirmed with linux trunk 20040814
==> layout/images

Comment 3

[Martijn Wargers (dead)]

Attachment: testcase2

The first testcase takes for me only 100% cpu when it is in a background tab.

This testcase also takes 100% cpu when it is in a foreground tab. Removing the
"GIF89a" makes the 100% cpu go away. 
After pressing "Stop" the 100% cpu goes away.

Comment 4

[VanillaMozilla]

Is this also a JavaScript error?

Bug apparently blocks JavaScript from executing.  A moving banner at the bottom
of the Web page is not displayed.

Bug goes away in Mozilla 1.7.5 or Fx 1.0.1 if you disable allowing JS to move
images (Edit/Preferences/Advanced/Scripts & Plug-ins/Allow scripts to Change
images in Mozilla 1.7.5).  (This option may not be available in recent trunk
builds).

OS should probably be marked as "All".  Bug occurs in Win 98 and XP.

Comment 5

[Ryuichi KUBUKI]

(In reply to comment #3)
> Created an attachment (id=176280) [edit]
> testcase2
> 
> The first testcase takes for me only 100% cpu when it is in a background tab.
> 
> This testcase also takes 100% cpu when it is in a foreground tab. Removing the
> "GIF89a" makes the 100% cpu go away. 
> After pressing "Stop" the 100% cpu goes away.

WFM, no rise in the CPU load at all

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060504 Minefield/3.0a1

Comment 6

[Martijn Wargers (dead)]

I'm still seeing this bug with current trunk build.
But I'm beginning to think this is not a bug at all in Mozilla, this is exactly what should happen. The scripts used in the testcases and the url are creating an endless loop.

Comment 7

[RNicoletto]

WFM, no rise in the CPU load at all

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14 

Comment 8

[Cees T.]

URL WFM, but that first testcase hogs my CPU more than http://www.ut3.de/forum/unreal-tournament/unreal-tournament-files/466-jessica-1-5/

Terrible perf with Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4 on 2.6 GHz Windows XP, 1 GB RAM, Radeon 9800.

Comment 9

[RNicoletto]

(In reply to comment #8)
> URL WFM, but that first testcase hogs my CPU more than
> http://www.ut3.de/forum/unreal-tournament/unreal-tournament-files/466-jessica-1-5/
> 
> Terrible perf with Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b4)
> Gecko/20090423 Firefox/3.5b4 on 2.6 GHz Windows XP, 1 GB RAM, Radeon 9800.

Yes, but that's Bug 361754, not relevant for this bug.

Comment 10

[Wayne Mery (:wsmwk)]

testcase 2 WFM with current trunk + vista