1721322 - website won't open with win32k lockdown enabled

Status: RESOLVED DUPLICATE of bug 1713973

(Core :: Security: Process Sandboxing, defect, P1)

Description

[[e-mail]]

Attachment: pending.zip

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

enable win32k lockdown in experiments
visit:
https://usa.kaspersky.com/downloads/thank-you/internet-security

i attached tab crash dump files
from:
C:\Users%username%\AppData\Roaming\Mozilla\Firefox\Crash Reports\pending

Actual results:

tab crashed

Expected results:

loaded website

Comment 1

[Gian-Carlo Pascutto [:gcp]]

Unclear on the severity for now / only this 1 site is affected?

Comment 2

[Bob Owen (:bobowen)]

I think this is the same as bug 1713973.
Looks like this is a profile with the experiment enabled then being used on Release Firefox, where we don't have the work-around from bug 1696940.

Comment 3

[[e-mail]]

nope i updated to version 90 and tried win32k lockdown, i always want to try new experimental features of release versions like fission etc...
i reported to know if it is an easy fix by the firefox team or more complex than that and i do want it to be working better in future releases as well that is all.

Comment 4

[Bob Owen (:bobowen)]

(In reply to [e-mail] from comment #3)

nope i updated to version 90 and tried win32k lockdown, i always want to try new experimental features of release versions like fission etc...
i reported to know if it is an easy fix by the firefox team or more complex than that and i do want it to be working better in future releases as well that is all.

Ah, so you set it via the pref, sorry I thought you had set it via the Nightly Experiments page.
Either way thanks for testing this, like I said in bug 1713973, we should probably remove / disable this pref apart from in Nightly with this known quite common crasher.

Comment 5

[[e-mail]]

no worries, and thanks hope it will be crashless in the future.