www.cisco.com - firefox hangs, process needs be killed

[JGB1712]

URL: https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/200046-tac-recommended-aireos.html

Browser / Version: Firefox 90.0
Operating System: Windows 10
Tested Another Browser: Yes Chrome

Problem type: Something else
Description: Firefox v90.0.x hangs ands stops working. need to kill firefox.exe process
Steps to Reproduce:
If I open the URL firefox hangs. I also tried on different computer and in safe mode. It always hangs and I need to kill the process. This issue startet with v90.0.x, with v89.x.x it works

View the screenshot

Browser Configuration

• None

From webcompat.com with ❤️

[softvision-oana-arbuzov]

Thanks for the report, but I'm not able to reproduce the issue. For me the page loads and I can browse the site without issues.

Tested with:
Browser / Version: Firefox Nightly 92.0a1 (2021-07-22), Firefox Release 90.0.2
Operating System: Windows 10 Pro

@JGB1712 could you check with Firefox Nightly?
Also can you record a performance profile and add it here? Read more here https://profiler.firefox.com/

[JGB1712]

View the screenshot

Same issue: tested it directly after installation. no settings changed in firefox. tested it on 2 different computers. one with german firefox nightly build and one with english nightly build. I cant show performance during opening the URL, because firefox hangs completely.

Version: 92.0a1 (2021-07-23)

View the screenshot

[JGB1712]

right now i tested it from home with firefox 90.0.2 and there the URL works .. I guess we have some SSL decryption in my company .. how could be find out what happens and why firefox freezes? with chrome this issue doesnt exist.

[liamengland1]

does it still happen if you change security.osclientcerts.autoload to false in about:config then restart firefox? @JGB1712

[JGB1712]

hello @llacb47,
even without restarting firefox, the workaround by disabling security.osclientcerts.autoload worked :-) thanks :-)

can you explain why firefox freezes?

[softvision-oana-arbuzov]

@karlcow do you have any ideas?

[liamengland1]

Possible duplicate of bz/1699882, in any case it should be filed on bugzilla and blocked on https://bugzilla.mozilla.org/show_bug.cgi?id=1591269

[karlcow]

Close as duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1722445

[karlcow]

@JGB1712 on https://bugzilla.mozilla.org/show_bug.cgi?id=1722445 Dana is asking:

Any chance you could get the original reporter to get a stack trace with something like windbg or Process Hacker 2?

[JGB1712]

If you tell me how - sure ;-) But I even dont know what a stack tracer or windbg or Process Hacker 2 is ;-)

[karlcow]

@mozkeeler help 😄

If you tell me how - sure ;-) But I even dont know what a stack tracer or windbg or Process Hacker 2 is ;-)

[mozkeeler]

You can get process hacker here: https://processhacker.sourceforge.io/downloads.php
After you install and open it, Firefox should be in the list of processes displayed (assuming it's running). If you double-click on the main Firefox process, you should get a window with a "Threads" tab. If you switch to that, you should see what threads are running. If you sort by CPU, hopefully it should be clear what thread is doing the work that's hanging it. If you double-click on that, it should give you a stack you can copy/paste here.

[karlcow]

@JGB1712 ⬆️