Hello Kees, On Fri, 21 Aug 2020 at 02:45, Kees Cook <keescook@xxxxxxxxxxxx> wrote: > > On Thu, Aug 20, 2020 at 06:00:14PM +0200, Oleg Nesterov wrote: > > On 08/19, Sumit Semwal wrote: > > > > > > --- a/include/linux/mm.h > > > +++ b/include/linux/mm.h > > > @@ -2484,7 +2484,7 @@ static inline int vma_adjust(struct vm_area_struct *vma, unsigned long start, > > > extern struct vm_area_struct *vma_merge(struct mm_struct *, > > > struct vm_area_struct *prev, unsigned long addr, unsigned long end, > > > unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t, > > > - struct mempolicy *, struct vm_userfaultfd_ctx); > > > + struct mempolicy *, struct vm_userfaultfd_ctx, const char __user *); > > > > It seems that you forgot to update the callers in fs/userfaultfd.c ? > > (I recommend including "make allmodconfig && make" in your test workflow.) Yes, indeed :| - that was stupid of me! > > -- > Kees Cook Best, Sumit.