Bug 21048 – Webkit stops responding totally

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: WebKit Misc.

[Jyrki Wahlstedt]

After using Webkit for some time, it stops responding totally. This is a new behaviour seen in r36766, may happen even while scrolling a page, most often though after using another app for a while, return does not happen.

It might be related to this that at launch the main window does not appear in front, which would be normal, but stays in background and must be explicitly selected.

There is no way to recover, but to kill the whole process.

[Jyrki Wahlstedt]

Happens with r36882

[Jyrki Wahlstedt]

and with r37113, one symptom of course being that if I change to another app, I don't see any Webkit window anymore (oh well, I miss OS X sampling, could see what is happening, but this doesn't even crash, just stays there silent, doing nothing)

[Jyrki Wahlstedt]

Seems somehow time-related, all is fine for half an hour or so

[Jyrki Wahlstedt]

Started r37113 twice, ran 10-20 minutes, then froze. My usual setup: five windows with 26 tabs (9+2+7+5+3) similar tabs grouped together.

[Jyrki Wahlstedt]

and r37382

[Jyrki Wahlstedt]

and with r37458

[Jyrki Wahlstedt]

and with r37604

[Jyrki Wahlstedt]

and r37819:-(

[Jyrki Wahlstedt]

Well, so far I haven't mentioned (should have) that all WebKit tasks shown in Task Manager show the state as 'Not responding'

[Jyrki Wahlstedt]

and r37894

[Jyrki Wahlstedt]

and, no surprise here, with r37990

[Alexey Proskuryakov]

Please attach a sample of the process, taken with /Applications/Utilities/Activity Monitor.app.

Please also make sure that you don't have any "Safari enhancers" installed via SIMBL, input managers or other methods.

[Jyrki Wahlstedt]

Sorry,
this is on Windows (wouldn't use it by choice), if there is a similar sampler somewhere, it would be nice to know (no access to MSDN or similar though)

On OS X, sampling a process is really useful, would have done that already, I'd guess

[Jyrki Wahlstedt]

and no, there are no enhancers of any kind involved

[Jyrki Wahlstedt]

and r38192...

[Alexey Proskuryakov]

Do the freezes correlate with which sites you visit in any way? Also, will they persist if you disable Java and plug-ins?

[Jyrki Wahlstedt]

Well, I usually have the same set of pages open, enumerated below:
w1: http://www.nice.fi/en/home.html, http://nice.edelkey.net/ (company intranet, based on mediaWiki), http://en.wikipedia.org/wiki/List_of_unit_testing_frameworks, http://fi.wikipedia.org/wiki/Scrum, http://www.construx.com/, http://localhost:8080/scrumworks/, http://www.fazeramica.fi/templates/Fazer_RestaurantMenuPage.aspx?id=56467&epslanguage=FI, http://jeffsutherland.com/scrum/, http://www.controlchaos.com/
w2: http://www.fmi.fi/saa/paikalli.html?kunta=Helsinki, http://aikataulut.ytv.fi/reittiopas/slangi/?mm=trip&sm=&m=&adv=&map=&n=&a=&b=&c=&an=&bn=&cn=&keya=&keyb=&keyc=&date=20080507&time=1516&params=1l3l1l3l2lll1l1l1l1l1l0
w3: http://www.macintouch.com/, http://www.macrumors.com/, http://www.stepwise.com/, http://daringfireball.net/, http://www.friday.com/bbum/, http://www.wilshipley.com/blog/, http://www.apple.com/hotnews/
w4: http://bergie.iki.fi/, http://bergie.jaiku.com/, http://plazes.com/users/7006, http://twitter.com/home, http://villeq.blogspot.com/
w5: http://sissi.edelkey.net/ (an intranet site), http://www.yle.fi/, http://news.bbc.co.uk/

None have, as far as I can see, Java, but I'll disable all plugins, and write another comment, how that goes

I don't have an exact list of what I've done, but I'd say I tried to use just one window, with the same result, but this is something I have to confirm, too.

[Jyrki Wahlstedt]

r38240, with this page set, froze quickly

[Jyrki Wahlstedt]

r38240, plugins and Java disabled, freezes

[Alexey Proskuryakov]

<rdar://problem/6356415>

[Jyrki Wahlstedt]

Sorry, I might have made a hasty conclusion, not sure about it, but maybe killing the process from "Task Manager" leaves something behind, in any case after a normal quit I ran quite a while, longer than expected, have to check on disabling Java/plugins separately

[Jyrki Wahlstedt]

Created attachment 25013 [details]
Installed plug-ins

with r38240, on Nov 10th

[Jyrki Wahlstedt]

Now, then, the blame seems to be more on plug-ins, as I had r38240 running with plug-ins disabled, and Java enabled, it staying operational overnight, after which I enabled plugins (cf. attached file) leading to a freeze 

[Jyrki Wahlstedt]

FWIW, Safari 3.2 shows similar behaviour (running it at the moment with plug-ins disabled, so we'll see)

[Alexey Proskuryakov]

Safari 3.2 only has very minimal WebKit changes, so this is extremely strange. Are you sure that running Safari 3.1 with r36712 (the last nightly revision before r36766 ) didn't expose the problem? Maybe this is something that changed on on of the sites you visit that started triggering it?

[Jyrki Wahlstedt]

Yes, extremely strange, that's what I think of this, too, but anyway it's recurrent, and so far the only connecting thing is enabling/disabling the plug-ins, though what would be the potential culprit, I have no faintest idea (I tried to ascertain I'm running the basic Safari, not Webkit-nightly, and the quickest way seems to be to launch Web Inspector that shows in Webkit only). There seems to be no apparent relation to the visited pages, it seems really to be more related to the time the process has been running, strange...

[Deirdre Saoirse Moen]

 Jyrki, what other things might you have installed other than plug-ins proper? E.g. input managers, etc. (The easiest way to see this is to look at a relatively recent Safari crash log at the bottom section (Binary Images) and look for items with a + right before the name. Crash logs can be found at ~/Library/Logs/CrashReporter/)

[Jyrki Wahlstedt]

Hi,
I'd love to know, how to find that information on the problematic platform (i.e. Win XP), as that path looks very much like OS X... But I add an older module list from my system as seen by Dr. Watson.

[Jyrki Wahlstedt]

Created attachment 26489 [details]
List of modules in the system (Win XP)

[Jyrki Wahlstedt]

Adding to the previous comment, there is no real way to get a crash log, as the app does not crash, it just does nothing ('not responding' in Task Manager). If someone knows a way to do the thing sampling on OS X does on Windows, I'd be happy to do that, but a (very) brief search gave nothing.

[Jyrki Wahlstedt]

This hasn't happened for a long time, so this could be closed by me...

[Alexey Proskuryakov]

Thanks for the update!