Messages in this thread | | | Date | Mon, 2 May 2016 16:15:38 +0200 | From | Oleg Nesterov <> | Subject | Re: GUP guarantees wrt to userspace mappings redesign |
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I am sure I missed the problem, but...
On 05/02, Kirill A. Shutemov wrote: > > Quick look around: > > - I don't see any check page_count() around __replace_page() in uprobes, > so it can easily replace pinned page.
Why it should? even if it races with get_user_pages_fast()... this doesn't differ from the case when an application writes to MAP_PRIVATE non-anonymous region, no?
Oleg.
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