On Mon, Aug 03, 2015 at 09:19:14AM -0700, Greg KH wrote: > On Mon, Aug 03, 2015 at 01:34:28PM +0300, Kirill A. Shutemov wrote: > > Greg KH wrote: > > > On Mon, Jul 20, 2015 at 02:29:58PM -0700, Dave Hansen wrote: > > > > > > > > (sorry for the spam, I screwed up the stable@ address). > > > > > > > > BTW, thanks to Kirill for doing this patch! He posted it to LKML > > > > but we need to ensure it is picked up for 4.2 and any -stable > > > > kernels where this commit is applied: > > > > > > > > 6b7339f4: mm: avoid setting up anonymous pages into file mapping > > > > > > > > That broke MPX support because MPX sets a vma->vm_ops on an > > > > anonymous VMA. We need this patch to make it work again, > > > > basically removing MPX's use of ->vm_ops. Kirill made me aware > > > > of this long ago, but I didn't double-check that his fix got > > > > submitted and merged. > > > > > > > > I (Dave) fixed up a minor merge conflict and added the > > > > try_unmap_single_bt() use of is_mpx_vma() (which were added > > > > post-4.1). > > > > > > > > Note for -stable: The first hunk may not apply cleanly because of > > > > other activity in arch/x86/mm/mmap.c, but should be trivial to > > > > apply by hand. Hunk #5 on mpx.c is only present on 4.2-rc kernels. > > > > > > Can someone send a version that is known to apply, you don't want to > > > rely on me to get it right :) > > > > Here it is. > > > > MPX support was introduced in 3.19, so it only need to be applied to > > 4.1-stable. > > Thanks, now applied. Just to make clear: we don't need MPX patch for older stables, but we *do* need 6b7339f4 (mm: avoid setting up anonymous pages into file mapping) to be ported into all stables. -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html