On Fri, Oct 09, 2020 at 03:04:20PM -0700, Andrew Morton wrote: > On Fri, 9 Oct 2020 17:03:37 +0200 "Christian König" <ckoenig.leichtzumerken@xxxxxxxxx> wrote: > > > Patch "495c10cc1c0c CHROMIUM: dma-buf: restore args..." > > adds a workaround for a bug in mmap_region. > > > > As the comment states ->mmap() callback can change > > vma->vm_file and so we might call fput() on the wrong file. > > > > Revert the workaround and proper fix this in mmap_region. > > > > Doesn't this patch series address the same thing as > https://lkml.kernel.org/r/20200916090733.31427-1-linmiaohe@xxxxxxxxxx? Same basic issue, looks like both of these patches should be combined to plug it fully. Jason
