On Tue, 23 Jan 2007, Andrew Morton wrote:
>
> /*
> + * Helper function for iterating across a vma list. It ensures that the caller
> + * will visit `gate_vma' prior to terminating the search.
Well, the comment is wrong. The code doesn't actually visit 'gate_vma' if
the list of VMA's is empty.
Not that the old code did either, so it's not like it's a new bug, but I
thought I'd point it out anyway. As if we care (but you can probably
trigger this by having an app that does
munmap(NULL, TASK_SIZE);
which will cause a SIGSEGV on return (because the stack doesn't exist) and
then the core-dump should be empty.
Not that I tested anythign that evil anyway, nor do I think we really care
if it means that the gate_vma doesn't get shown in the core-dump either.
Linus
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