[Webkit-unassigned] [Bug 102828] r134080 causes heap problem on linux systems where PAGESIZE != 4096

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=102828





--- Comment #8 from Balazs Kilvady <kilvadyb at homejinni.com>  2012-11-27 10:51:12 PST ---
(In reply to comment #7)
> (In reply to comment #3)
> > (In reply to comment #2)
> > > (From update of attachment 175259 [details] [details] [details])
> > > View in context: https://bugs.webkit.org/attachment.cgi?id=175259&action=review
> > > 
> > > I'm somewhat confused as to why a different page size makes things segfault. Where exactly did it segfault? I wouldn't be opposed to making the Region size variable, e.g. 16 * WTF::pageSize() or something like that.
> > I don't know where exactly the error comes from (it varies by tests, debug/release) but it always happens in a heap operation since r134080. This patch fixed the problem.
> 
> I don't like the idea of doing a blind fix.  Can you try to do more investigation into where in our memory management logic things go wrong?
> 
> It would be good to understand this.  It may even be that you've found a more fundamental bug that happens to only show up with larger page sizes, but is just harder to spot with the usual page sizes that most WebKit clients use.
I will try to find it.

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