Bug 517752 - ksoftirqd goes crazy, almost freezing system, after clicking a link on a certain webpage
Summary: ksoftirqd goes crazy, almost freezing system, after clicking a link on a cert...
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 12
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL: http://www.britishgas.co.uk/
Depends On:
TreeView+ depends on / blocked
Reported: 2009-08-16 16:28 UTC by Robin Green
Modified: 2010-11-08 20:58 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-11-08 20:58:58 UTC
Type: ---

Attachments (Terms of Use)

Description Robin Green 2009-08-16 16:28:14 UTC
Description of problem:
When I click a certain link in firefox, the machine starts running like treacle. With some struggle I managed to run top and see that software interrupts (si) handling are pegged at around 99% CPU, and ksoftirqd is the top process.

Version-Release number of selected component (if applicable):

How reproducible:
3 times out of 3

Steps to Reproduce:
1. Go to URL above in firefox
2. Click the green "Login" button
Actual results:
X appears to freeze

Expected results:
no freeze

Additional info:
Fedora is virtualised inside VirtualBox 3.0.4_OSE running on Mac OS X 10.5.8. I am running an X server (Xephyr) on the Mac OS X host and using that as the X server for firefox.

The URL above contains Flash, which is run by (I think) swfdec, or anyway, *something* running in nspluginviewer. So maybe it's nspluginviewer that's causing this - other web pages don't seem to have this problem.

Comment 1 Adam Williamson 2009-11-10 16:06:05 UTC
Can't reproduce this here; I'm using Adobe Flash, though.

Fedora Bugzappers volunteer triage team

Comment 2 Bug Zapper 2009-11-16 11:29:28 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:

Comment 3 Bug Zapper 2010-11-04 10:29:20 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

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Comment 4 Robin Green 2010-11-08 20:58:58 UTC
swfdec can no longer render the Flash on that page on my machine, so I can't reproduce the original conditions that led to this bug. Closing.

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