linuxPackages_5_4.wireguard: broken on nixos-20.09-small

[erictapen]

Describe the bug

nix build github:nixos/nixpkgs/nixos-20.09-small#linuxPackages_5_4.wireguard fails.

@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/9faajb344sq64b4qsp95n1acws562kh6-source
source root is source
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
no configure script, doing nothing
@nix { "action": "setPhase", "phase": "buildPhase" }
building
build flags: -j2 -l2 SHELL=/nix/store/2jysm3dfsgby5sw5jgj43qjrb5v79ms9-bash-4.4-p23/bin/bash module
  CC [M]  /build/source/src/main.o
  CC [M]  /build/source/src/noise.o
  CC [M]  /build/source/src/device.o
  CC [M]  /build/source/src/peer.o
  CC [M]  /build/source/src/timers.o
  CC [M]  /build/source/src/queueing.o
  CC [M]  /build/source/src/send.o
  CC [M]  /build/source/src/receive.o
  CC [M]  /build/source/src/socket.o
  CC [M]  /build/source/src/peerlookup.o
  CC [M]  /build/source/src/allowedips.o
  CC [M]  /build/source/src/ratelimiter.o
  CC [M]  /build/source/src/cookie.o
  CC [M]  /build/source/src/netlink.o
  CC [M]  /build/source/src/crypto/zinc/chacha20/chacha20.o
  PERLASM /build/source/src/crypto/zinc/chacha20/chacha20-x86_64.S
  CC [M]  /build/source/src/crypto/zinc/poly1305/poly1305.o
  PERLASM /build/source/src/crypto/zinc/poly1305/poly1305-x86_64.S
  CC [M]  /build/source/src/crypto/zinc/chacha20poly1305.o
  CC [M]  /build/source/src/crypto/zinc/blake2s/blake2s.o
  AS [M]  /build/source/src/crypto/zinc/blake2s/blake2s-x86_64.o
In file included from <command-line>:
/build/source/src/compat/compat-asm.h:44: warning: "SYM_FUNC_START" redefined
   44 | #define SYM_FUNC_START ENTRY
      | 
In file included from /build/source/src/compat/compat-asm.h:9,
                 from <command-line>:
/nix/store/xrbpwcfdfv656r6b3aynmaj8qjg73nw9-linux-5.4.76-dev/lib/modules/5.4.76/source/include/linux/linkage.h:218: note: this is the location of the pre>
  218 | #define SYM_FUNC_START(name)    \
      | 
In file included from <command-line>:
/build/source/src/compat/compat-asm.h:45: warning: "SYM_FUNC_END" redefined
   45 | #define SYM_FUNC_END ENDPROC
      | 
In file included from /build/source/src/compat/compat-asm.h:9,
                 from <command-line>:
/nix/store/xrbpwcfdfv656r6b3aynmaj8qjg73nw9-linux-5.4.76-dev/lib/modules/5.4.76/source/include/linux/linkage.h:265: note: this is the location of the pre>
  265 | #define SYM_FUNC_END(name)    \
      | 
/build/source/src/crypto/zinc/blake2s/blake2s-x86_64.S: Assembler messages:
/build/source/src/crypto/zinc/blake2s/blake2s-x86_64.S:50: Error: invalid character '(' in mnemonic
/build/source/src/crypto/zinc/blake2s/blake2s-x86_64.S:176: Error: invalid character '(' in mnemonic
/build/source/src/crypto/zinc/blake2s/blake2s-x86_64.S:180: Error: invalid character '(' in mnemonic
/build/source/src/crypto/zinc/blake2s/blake2s-x86_64.S:257: Error: invalid character '(' in mnemonic
make[3]: *** [/nix/store/xrbpwcfdfv656r6b3aynmaj8qjg73nw9-linux-5.4.76-dev/lib/modules/5.4.76/source/scripts/Makefile.build:348: /build/source/src/crypto>
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/nix/store/xrbpwcfdfv656r6b3aynmaj8qjg73nw9-linux-5.4.76-dev/lib/modules/5.4.76/source/Makefile:1729: /build/source/src] Error 2
make[1]: *** [/nix/store/xrbpwcfdfv656r6b3aynmaj8qjg73nw9-linux-5.4.76-dev/lib/modules/5.4.76/source/Makefile:179: sub-make] Error 2
make: *** [Makefile:26: module] Error 2

To Reproduce

See above.

Expected behavior
It should build.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context

Git bisect tells me, that d0e3de0 is at fault.
Currently bisecting the linux kernel, but that takes a long time and probably doesn't concern Nixpkgs.

Notify maintainers

Metadata

I'll skip this, as this concerns a flake output.

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute: linuxPackages_5_4.wireguard
# a list of nixos modules affected by the problem
module:

[erictapen]

Closed in #103383