Messages in this thread | | | Subject | Re: [PATCH 3/6] struct page: add field for vm_struct | From | Igor Stoppa <> | Date | Wed, 21 Feb 2018 14:01:20 +0200 |
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On 20/02/18 22:54, Matthew Wilcox wrote: > On Tue, Feb 20, 2018 at 09:53:30PM +0200, Igor Stoppa wrote:
[...]
>> It was found while testing on a configuration with framebuffer. > > ... ah. You tried to use vmalloc_to_page() on something which wasn't > backed by a struct page. That's *supposed* to return NULL, but my > guess is that after this patch it returned garbage.
it seems to return garbage also without this patch, but I need to clean up the code, try it again and possibly come up with a demo patch for triggering the problem.
I'll investigate it more. However it doesn't seem to be related to the functionality I need. So I plan to treat it as separate issue and leave find_vm_area untouched, at least in pmalloc scope.
-- igor
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