Hang trying to quit and open a new browser window at the same time

NEW
Unassigned

Status

()

Core
XPCOM
--
critical
2 years ago
2 years ago

People

(Reporter: Jesse Ruderman, Unassigned)

Tracking

(Blocks: 1 bug, {hang, testcase})

Trunk
hang, testcase
Points:
---

Firefox Tracking Flags

(firefox45 affected)

Details

(Whiteboard: [fuzzblocker:hangs])

Attachments

(2 attachments)

(Reporter)

Description

2 years ago
Created attachment 8695532 [details]
testcase

1. Set up a new profile with:
  A. https://github.com/MozillaSecurity/funfuzz/blob/master/dom/automation/constant-prefs.js as prefs.js
  B. Add:
       user_pref("nglayout.debug.disable_xul_cache", true);
  C. https://github.com/MozillaSecurity/funfuzz/tree/master/dom/extension/ installed in the profile
       (either wget + drag https://www.squarefree.com/extensions/domFuzzLite3.xpi, or do the text file thing)

2. Save a local copy of the testcase

3. firefox h.html

Result: Firefox hangs (beachballing but not hogging CPU) about 50% of the time.
(Reporter)

Comment 1

2 years ago
Created attachment 8695537 [details]
hang sample

nsEventQueue.cpp  @ nsEventQueue::GetEvent

55    mEventsAvailable.Wait();
(Reporter)

Comment 2

2 years ago
This will prevent me from finding some other hang bugs.
Whiteboard: [fuzzblocker:hangs]
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