DMKS failed after Kernel Upgrade to 4.4.0-161-generic on Ubuntu 16.04 LTS

[Markus Grundmann]

Question: If the patch needed?

Don't touch a running system :-|
-Markus


[..]
Selecting previously unselected package wireguard-dkms.
(Reading database ... 346239 files and directories currently installed.)
Preparing to unpack .../wireguard-dkms_0.0.20190702-wg1~xenial_all.deb ...
Unpacking wireguard-dkms (0.0.20190702-wg1~xenial) ...
Selecting previously unselected package wireguard-tools.
Preparing to unpack
.../wireguard-tools_0.0.20190702-wg1~xenial_amd64.deb ...
Unpacking wireguard-tools (0.0.20190702-wg1~xenial) ...
Selecting previously unselected package wireguard.
Preparing to unpack .../wireguard_0.0.20190702-wg1~xenial_all.deb ...
Unpacking wireguard (0.0.20190702-wg1~xenial) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up wireguard-dkms (0.0.20190702-wg1~xenial) ...
Loading new wireguard-0.0.20190702 DKMS files...
First Installation: checking all kernels...
Building only for 4.4.0-161-generic
Building initial module for 4.4.0-161-generic
ERROR: Cannot create report: [Errno 17] File exists:
'/var/crash/wireguard-dkms.0.crash'
Error! Bad return status for module build on kernel: 4.4.0-161-generic
(x86_64)
Consult /var/lib/dkms/wireguard/0.0.20190702/build/make.log for more
information.
Setting up wireguard-tools (0.0.20190702-wg1~xenial) ...
Setting up wireguard (0.0.20190702-wg1~xenial) ...

=== Crash Report ===
ProblemType: Package
DKMSBuildLog:
 DKMS make.log for wireguard-0.0.20190702 for kernel 4.4.0-161-generic
(x86_64)
 Fr 6. Sep 09:02:18 CEST 2019
 make: Entering directory '/usr/src/linux-headers-4.4.0-161-generic'
   LD      /var/lib/dkms/wireguard/0.0.20190702/build/built-in.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/main.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/noise.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/device.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/peer.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/timers.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/queueing.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/send.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/receive.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/socket.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/peerlookup.o
   CC [M]  /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.o
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c: In function
‘root_remove_peer_lists’:
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c:72:1: warning:
the frame size of 1048 bytes is larger than 1024 bytes
[-Wframe-larger-than=]
  }
  ^
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c: In function
‘root_free_rcu’:
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c:59:1: warning:
the frame size of 1048 bytes is larger than 1024 bytes
[-Wframe-larger-than=]
  }
  ^
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c: In function
‘walk_remove_by_peer.isra.3’:
 /var/lib/dkms/wireguard/0.0.20190702/build/allowedips.c:126:1: warning:
the frame size of 1032 bytes is larger than 1024 bytes
[-Wframe-larger-than=]
  }
  ^
   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
 scripts/Makefile.build:285: recipe for target
'/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.o' failed
 make[1]: *** [/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.o]
Error 1
 Makefile:1454: recipe for target
'_module_/var/lib/dkms/wireguard/0.0.20190702/build' failed
 make: *** [_module_/var/lib/dkms/wireguard/0.0.20190702/build] Error 2
 make: Leaving directory '/usr/src/linux-headers-4.4.0-161-generic'
DKMSKernelVersion: 4.4.0-161-generic
Date: Fri Sep  6 09:02:28 2019
DuplicateSignature:
dkms:wireguard-dkms:0.0.20190702-wg1~xenial:/var/lib/dkms/wireguard/0.0.20190702/build/ratelimiter.c:25:8:
error: unknown type name ‘hsiphash_key_t’
Package: wireguard-dkms 0.0.20190702-wg1~xenial
PackageVersion: 0.0.20190702-wg1~xenial
SourcePackage: wireguard
Title: wireguard-dkms 0.0.20190702-wg1~xenial: wireguard kernel module
failed to build