On Wed, May 02, 2018 at 02:38:42PM +0000, Andrey Konovalov wrote: > > Does having a tagged address here makes any difference? I couldn't hit a > > failure with my simple tests (LD_PRELOAD a library that randomly adds > > tags to pointers returned by malloc). > > I think you're right, follow_page_mask is only called from > __get_user_pages, which already untagged the address. I'll remove > untagging here.
It also called from follow_page(). Have you covered all its callers? -- Kirill A. Shutemov
