48996 2010-11-04 07:44:39 -0700 http/tests/websocket/tests/workers/close-in-onmessage-crash.html sometimes crashes on Windows 2022-02-12 21:57:35 -0800 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) PC Windows XP RESOLVED WONTFIX http://build.webkit.org/results/Windows%20Release%20(Tests)/r71332%20(6003)/results.html InRadar, LayoutTestFailure, PlatformOnly P2 Normal --- 55579 1 aroben pvollan ap bfulgham joenotcharles peavo pvollan ukai yutak oldest_to_newest 304649 0 aroben 2010-11-04 07:44:39 -0700 http/tests/websocket/tests/workers/close-in-onmessage-crash.html sometimes crashes on Windows. See the URL for one such example. I've added the test to the Skipped file. 304664 1 aroben 2010-11-04 07:55:48 -0700 <rdar://problem/8630448> 305110 2 yutak 2010-11-04 19:52:43 -0700 To understand the situation better, I want to ask: - Is the stack trace available? - How frequent did the crash happen? - Does this test crash on debug builds (not only release builds)? 305234 3 aroben 2010-11-05 05:26:10 -0700 (In reply to comment #2) > - Is the stack trace available? Unfortunately, the crash has only happened on our Windows 7 bot, and we don't have a way to get crash logs on Windows 7 currently. So: no. :-( > - How frequent did the crash happen? I looked back in the buildbot logs and recorded every time I saw the crash, until I got bored: http://build.webkit.org/results/Windows%20Release%20(Tests)/r71321%20(5993)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71311%20(5985)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71306%20(5981)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71303%20(5979)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71233%20(5941)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71227%20(5938)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71206%20(5922)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71163%20(5901)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71113%20(5887)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71107%20(5881)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71099%20(5874)/results.html http://build.webkit.org/results/Windows%20Release%20(Tests)/r71093%20(5869)/results.html That's an average of 12 builds between crashes, but since we have two different bots running Windows Release (Tests) and only one of them is seeing the crash, that means it's happening once every 6 builds (on average). > - Does this test crash on debug builds (not only release builds)? Unfortunately the logs for the Debug testers seem to be screwed up (see <http://build.webkit.org/waterfall?last_time=1288749756&show=Windows%20Debug%20%28Tests%29>), so I can't say. 305235 4 aroben 2010-11-05 05:27:03 -0700 (In reply to comment #3) > the crash has only happened on our Windows 7 bot We have 2 Windows XP bots and 2 Windows 7 bots. The Windows XP bots have Cygwin 1.5/Python 2.5.2 installed, while the Windows 7 bots have Cygwin 1.7/Python 2.6.5. Maybe that's a clue? 305264 5 yutak 2010-11-05 07:23:44 -0700 Thank you for providing information. I'm not sure about the root cause yet, and I will try to reproduce in my local environment later (but it may take some time to set up). 311393 6 yutak 2010-11-19 05:49:18 -0800 OK, I set up a new Windows 7 environment with cygwin 1.7, and I think I have reproduced the crash. I will take a close look. 312245 7 yutak 2010-11-22 01:33:52 -0800 Today I tried to track this down but failed. What I got was a bogus (corrupt) stack trace which only contained CoreFoundation.dll functions and a few functions from OS DLLs. I'm not sure but my guess is that there is some sort of race condition behind this crash (because this test employs a worker). This needs further investigation. Probably I should take a close look at WebSocket+worker implementation. 312246 8 yutak 2010-11-22 01:35:48 -0800 FYI, this crash occurs about 6% of the time on my local environment.