1652275 - Workers cause crash inside cross-origin iframe

Status: VERIFIED FIXED

(Core :: Privacy: Anti-Tracking, defect)

Description

[Arthur Edelstein [:arthur]]

Steps to reproduce:

1. Ensure network.cookie.cookieBehavior is set to 5.
2. Navigate to: https://arthuredelstein.github.io/swdemo/first.html
3. Now navigate in a second tab to: https://arthuredelstein.net/swdemo/second.html

Second tab crashes at https://hg.mozilla.org/mozilla-central/file/576f33282a0838c87ffadd52a8271726d86f85a1/dom/clients/manager/ClientSource.cpp#l215

== More details: ==
The first page creates a ServiceWorker using
let registration = await navigator.serviceWorker.register('serviceWorker.js');

The second page has a cross-origin iframe, also from arthuredelstein.github.io, that creates a SharedWorker.

Demo source code at https://github.com/arthuredelstein/swdemo

(Crash does not happen when network.cookie.cookieBehavior = 4)

Comment 1

[Gary Chen [:xeonchen]]

Attachment: Bug 1652275 - consider partitioning case in the assertion; r=baku

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8e5c9bb77337
consider partitioning case in the assertion; r=baku

Comment 3

[Dorel Luca [:dluca]]

https://hg.mozilla.org/mozilla-central/rev/8e5c9bb77337

Comment 4

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Reproduced the issue using Firefox 80.0a1 (20200711215253) on Windows 10x64.
The issue is verified fixed with Firefox 80.0b8 (20200813191622) on Windows 10x64, macOS 10.12 and Ubuntu 18.04.