Debian 4.9.0.9-amd64 :: DMKS failed

[Markus Grundmann]

This is a new debian VM running on BHYVE. After the installation and
upgrading operating system the following DKMS fails.

Installation procedure:
1) Modifying the files described on wireguard.com
2) apt update
3) apt install wireguard

[FAIL]

// Linux raspivm 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u5
(2019-08-11) x86_64 GNU/Linux

### Manual removing of 'wireguard-dkms'

root at raspivm:/# apt remove wireguard-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer
required:
  dkms fakeroot gcc libfakeroot linux-headers-amd64 sudo wireguard-tools
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  wireguard-dkms
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 1,780 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 64696 files and directories currently installed.)
Removing wireguard-dkms (0.0.20190702-1) ...

------------------------------
Deleting module version: 0.0.20190702
completely from the DKMS tree.
------------------------------
Done.

### Try to reinstall 'wireguard-dkms'

root at raspivm:/# apt install wireguard-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  wireguard-dkms
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 263 kB of archives.
After this operation, 1,780 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian unstable/main amd64 wireguard-dkms
all 0.0.20190702-1 [263 kB]
Fetched 263 kB in 0s (3,246 kB/s)
Selecting previously unselected package wireguard-dkms.
(Reading database ... 64553 files and directories currently installed.)
Preparing to unpack .../wireguard-dkms_0.0.20190702-1_all.deb ...
Unpacking wireguard-dkms (0.0.20190702-1) ...
Setting up wireguard-dkms (0.0.20190702-1) ...
Loading new wireguard-0.0.20190702 DKMS files...
Building for 4.9.0-9-amd64
Building initial module for 4.9.0-9-amd64
//
// ERROR
//
Error! Bad return status for module build on kernel: 4.9.0-9-amd64 (x86_64)
Consult /var/lib/dkms/wireguard/0.0.20190702/build/make.log for more
information.
//
//

### I try to build manual but make fails. Error: "hsiphash_key_t unknown".

# /var/lib/dkms/wireguard/0.0.20190702/build# make

ver="#define WIREGUARD_VERSION \"\"" && \
[ "$(cat version.h 2>/dev/null)" != "$ver" ] && \
echo "$ver" > version.h || true
  CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.o
/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.c:25:8: error:
unknown type name ‘hsiphash_key_t’
 static hsiphash_key_t key;
        ^~~~~~~~~~~~~~
/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.c: In function
‘wg_ratelimiter_allow’:
/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.c:109:22: error:
implicit declaration of function ‘hsiphash_2u32’
[-Werror=implicit-function-declaration]
   bucket = &table_v4[hsiphash_2u32(net_word, ip, &key) &
                      ^~~~~~~~~~~~~
/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.c:116:22: error:
implicit declaration of function ‘hsiphash_3u32’
[-Werror=implicit-function-declaration]
   bucket = &table_v6[hsiphash_3u32(net_word, ip >> 32, ip, &key) &
                      ^~~~~~~~~~~~~
cc1: some warnings being treated as errors
/usr/src/linux-headers-4.9.0-9-common/scripts/Makefile.build:309: recipe
for target '/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.o' failed
make[4]: *** [/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.o]
Error 1
/usr/src/linux-headers-4.9.0-9-common/Makefile:1544: recipe for target
'_module_/var/lib/dkms/wireguard/0.0.20190702/build' failed
make[3]: *** [_module_/var/lib/dkms/wireguard/0.0.20190702/build] Error 2
Makefile:152: recipe for target 'sub-make' failed
make[2]: *** [sub-make] Error 2
Makefile:8: recipe for target 'all' failed
make[1]: *** [all] Error 2
Makefile:32: recipe for target 'module' failed
make: *** [module] Error 2