On Thu, Jul 12, 2018 at 05:56:24PM +0300, Kirill A. Shutemov wrote: > > Fix crash found by syzkaller. > > The fix allows to remove ->vm_ops checks. > > v2: > - Catch few more cases where we need to initialize ->vm_ops: > + nommu; > + ia64; > - Make sure that we initialize ->vm_ops even if ->mmap failed. > We need ->vm_ops in error path too. Just to be clear: it *should* help found issues, but I don't have setup to test nommu changes. And ion-related bug was actually caused by fault injection that failed page allocation and ->mmap not setting ->vm_ops. It should be fine now. But again I wasn't able to trigger the exact situation. -- Kirill A. Shutemov
