On Fri, Feb 1, 2013 at 2:10 PM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > The fact that mlock calls get_user_pages, and get_user_pages might > call mlock when expanding a stack looks like a potential recursion. > > However, mlock makes sure the requested range is already contained > within a vma, so no stack expansion will actually happen from mlock. > > Should this ever change: the stack expansion mlocks only the newly > expanded range and so will not result in recursive expansion. > > Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: Michel Lespinasse <walken@xxxxxxxxxx> -- Michel "Walken" Lespinasse A program is never fully debugged until the last user dies. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>