Comment 3 for bug 1649342

The changes mentioned in the bug description were made by the following commit in mainline:

commit c2a9737f45e27d8263ff9643f994bda9bac0b944
Author: Wei Fang <email address hidden>
Date: Fri Oct 7 17:01:52 2016 -0700

    vfs,mm: fix a dead loop in truncate_inode_pages_range()

That commit was added to mainline as of 4.9-rc1. Ubuntu 16.10 received this changes via stable updates from upstream. This commit came in with the 4.8.4 upstream stable updates(Commit 3d549dc in 4.8.4).

Can you test the upstream 4.8.4 upstream stable kernel and see if it also exhibits this bug? It can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8.4/

It might also be worthwhile to test the current 4.9 mainline kernel to see if the bug is fixed or still exists in mainline. It can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9/