Bug 109249 – REGRESSION: Reloading a nightly start page three times makes it blank

• Component: Page Loading
• Status: RESOLVED WORKSFORME

[Sanford Selznick]

Created attachment 187220 [details]
Sample

1. Visit  http://nightly.webkit.org/start/trunk/142133
2. Reload the page 3 times.

After the third reload the page will never load again until Safari/WebKit are quit and relaunched.

I don't think this is a duplicate of the very old https://bugs.webkit.org/show_bug.cgi?id=19420

I can reproduce this on at least two machines/users.

It seems to happen on pages with dynamic HTML.

Sample provided, but it's not really hanging, just blank.

10.8.2, Version 6.0.2 (8536.26.17, 537+)

[Darin Adler]

I tried but was unable to reproduce this problem. My configuration is similar but not identical.

[Sanford Selznick]

Just reproduced it on a fairly bare-bones third computer using the exact link http://nightly.webkit.org/start/trunk/142133 and reloading three times.  After the third reload the page goes blank.

Not all pages exhibit the problem.

I also switched to a different network.  Same problem

I asked a far-away friend to try.  Same problem.

[Sanford Selznick]

Created attachment 187575 [details]
Movie of the blank reload

Watch the attached movie to see version, time, and date reproducing the event.

[Darin Adler]

What browser extensions do you have installed? Have you tested without them?

[Sanford Selznick]

Just to clarify my setup:

-> No browser extensions installed anywhere.
-> I downloaded the current nightly build to perform the test on all the computers.
-> All computers are up to date to 10.8.2.  
-> Stock-Safari works fine on all systems.
-> Reloading the URL in the movie (and in the bug report) reproduces the problem *almost* always.
-> There's nothing in Console.app about the issue.
-> I've tried a variety of computers and networks.

Thanks!

[Sanford Selznick]

I do have Flash installed on all systems, and have silverlight installed on most systems.

[Alexey Proskuryakov]

I can reproduce 100% reliably.

[Alexey Proskuryakov]

<rdar://problem/13204908>

[Sanford Selznick]

This appears to be fixed on two of my systems now.

[Alexey Proskuryakov]

Bisecting shows that this got fixed by <http://trac.webkit.org/changeset/142707>.

[Alexey Proskuryakov]

Unsure what to think about it though. Does this mean that main resource loading no longer takes this code path, but the bug still exists for subresources?

[Sanford Selznick]

I don't know enough to say.  Sorry.

[Sanford Selznick]

This bug, exactly as described by this report, reappeared in WebKit 143213.  Sorry.

Three reloads kills it.  The only way out is to quit/re-run WebKit.app.

[Darin Adler]

Who can reproduce this?

[Sanford Selznick]

It's intermittent.  I reproduced it a few times today.

[Alexey Proskuryakov]

I can not reproduce now.

[Sanford Selznick]

This happened again yesterday while browsing following a javascript debug session.  When it happens again, is there any information you'd like me to collect before restarting WebKit.app?

[Alexey Proskuryakov]

> This happened again yesterday while browsing following a javascript debug session.

Are you saying that you reloaded nightly start page three times after that? This bug tracks this specific scenario, not any instances of pages going blank. Yesterday, there was an entirely different bug with blank pages, bug 110368.

[Sanford Selznick]

No, It happens at random times and random sites.  I haven't seen a pattern.

[Sanford Selznick]

I've marked this as resolved.  I'll reopen it if I can get it to happen again at other URLs.  The initial problem is definitely fixed, though!  Thank you!