Red Hat Bugzilla – Bug 451549
firefox hangs when accessing some pages
Last modified: 2018-04-11 06:27:17 EDT
Description of problem:
Accessing for example pages created with trac or the comment editor for
<http://www.lwn.net> or <http://groklaw.net>, or the list administration pages
created by Mailman makes firefox hang completely. This bugzilla is also a good
way to hang it.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Go to http://bugzilla.redhat.com, "My Front Page"
2. Select some bug from there
Half the page for the bug shows up, firefox hangs. Minimizing and restoring the
firefox window shows no contents, just the border. Clicking on 'x' (close
window) shows an error message saying it is hung, telling it to "Wait" goes
nowhere, need to "Kill now".
Thanks for the bug report. We have reviewed the information you have provided
above, and there is some additional information we require that will be helpful
in our diagnosis of this issue.
Please install firefox-debuginfo (debuginfo-install is from
Then run firefox with a parameter -g. That will start firefox running inside of
gdb debugger. Then use command run and do whatever you did to make firefox
freeze. When it happens, press Ctrl-C in gdb window to get prompt back and run
(gdb) thread apply all backtrace
This produces usually many screens of the text. Copy all of them into a text
editor and attach the file to the bug as an uncompressed attachment.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 309428 [details]
Output as directed
As directed, went:
firefox -g http://bugzilla.redhat.com, --> "My Front Page" --> This bug; DDD
opens. Hang; wait a while, no output, ctrl-C. Output attached (neither galeon
nor epiphany allowed me to enter a file; had to use links)
Sorry, had to gzip the above output as the original file wouldn't go through.
Created attachment 309429 [details]
Direct output from firefox, outside of gdb
Created attachment 309445 [details]
gunzipped attachment 309428 [details]
Err, I see what's the problem.
*** This bug has been marked as a duplicate of 447444 ***