478001 - undetermined progressmeter uses 100% cpu

Status: RESOLVED WORKSFORME

(Core :: Widget, defect)

Description

[William Vanderpol]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.6) Gecko/2009011913 Firefox/3.0.6
Build Identifier: XulRunner 1.8-1.9.*

when an undetermined progressmeter is active and an iframe is used in the same document, cpu usage spikes to 100% on the system and remains there until the document is closed. 

Reproducible: Always

Steps to Reproduce:
1. Load the test case in firefox / thunderbird / xulrunner.



This could be used as a type of denial of service attack?

Comment 1

[William Vanderpol]

Attachment: Test case of cpu usage problem

Comment 2

[Samuel Sidler (old account; do not CC)]

This needs to be confirmed and work started before we'd consider it for the 1.9.0 branch.

Comment 3

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Not denial of service; the browser is still responsive.  On the 3.1 nightly, I get around 9% CPU usage under win32 running the test case, so this could be something related to an odd video driver and/or an odd theme.

Comment 4

[William Vanderpol]

This has been fixed at some point between 1.8 and 15. Resolved

Comment 5

[Mike Saywell]

I see this problem with the latest release (19.0) but only under Windows XP.  Windows 7 machines are fine.