[Webkit-unassigned] [Bug 183329] [GTK] 2.19 triggers Gigacage crash in Deja Dup

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Mar 5 09:55:48 PST 2018


--- Comment #8 from Michael Catanzaro <mcatanzaro at igalia.com> ---
One thing I just noticed, from https://bugzilla.gnome.org/show_bug.cgi?id=794056, is that this stack trace is exactly the same as the one valgrind hits when trying to use valgrind to debug epiphany since gigacage was enabled. That's probably expected, since valgrind attempts to allocate shadow bytes to keep track of the entire address space, which isn't practical under gigacage.

(In reply to Yusuke Suzuki from comment #6)
> Anyway, @mcatanzaro, do you know the way to allocate virtual memory region
> which does not have actual backing pages?

I have no clue about this. I thought actual backing pages were only employed once the memory region is actually used.

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