apt-get install  spl-dkms zfs-dkms zfs-initramfs zfs-zed
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  spl-dkms zfs-dkms zfs-initramfs zfs-zed
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/1,520 kB of archives.
After this operation, 10.9 MB of additional disk space will be used.
Preconfiguring packages ...
Selecting previously unselected package spl-dkms.
(Reading database ... 362001 files and directories currently installed.)
Preparing to unpack .../spl-dkms_0.6.5.9-1~bpo8+1_all.deb ...
Unpacking spl-dkms (0.6.5.9-1~bpo8+1) ...
Setting up spl-dkms (0.6.5.9-1~bpo8+1) ...
Loading new spl-0.6.5.9 DKMS files...
Building for 4.6.0-0.bpo.1-amd64 4.9.0-2-grsec-amd64
Building initial module for 4.6.0-0.bpo.1-amd64
Done.

spl:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.6.0-0.bpo.1-amd64/updates/dkms/

splat.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.6.0-0.bpo.1-amd64/updates/dkms/

depmod......

DKMS: install completed.
Building initial module for 4.9.0-2-grsec-amd64
configure: error: *** Unable to build an empty module.
Error! Bad return status for module build on kernel: 4.9.0-2-grsec-amd64 (x86_64)
Consult /var/lib/dkms/spl/0.6.5.9/build/make.log for more information.
dpkg: error processing package spl-dkms (--configure):
 subprocess installed post-installation script returned error exit status 10
Errors were encountered while processing:
 spl-dkms
E: Sub-process /usr/bin/dpkg returned an error code (1)