On Mon, Oct 31, 2022 at 04:25:24PM +0100, David Hildenbrand wrote: > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> > Cc: Peter Xu <peterx@xxxxxxxxxx> > Cc: John Hubbard <jhubbard@xxxxxxxxxx> > Cc: Jason Gunthorpe <jgg@xxxxxxxxxx> > Reported-by: syzbot+f0b97304ef90f0d0b1dc@xxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> > --- > > I assume this has been broken at least since 2014, when mm/gup.c came to > life. I failed to come up with a suitable Fixes tag quickly. I'm worried this would break RDMA over hugetlbfs maps - which is a real thing people do. MikeK do you have test cases? Jason
