Error building for ARM

Hello,

AS [M] net/wireguard/crypto/zinc/curve25519/curve25519-arm.o
net/wireguard/crypto/zinc/curve25519/curve25519-arm.S: Assembler messages:
net/wireguard/crypto/zinc/curve25519/curve25519-arm.S:21: Error: r13 not allowed here -- `and sp,sp,#0xfffffff0' scripts/Makefile.build:429: recipe for target 'net/wireguard/crypto/zinc/curve25519/curve25519-arm.o' failed make[3]: *** [net/wireguard/crypto/zinc/curve25519/curve25519-arm.o] Error 1 scripts/Makefile.build:587: recipe for target 'net/wireguard' failed
make[2]: *** [net/wireguard] Error 2

I guess this could matter?

$ arm-linux-gnueabihf-as --version
GNU assembler (GNU Binutils for Debian) 2.31.1
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `arm-linux-gnueabihf'.

With respect,
Roman

Could you send your kernel's .config or some more information so that I can try to reproduce locally?

Sending .config

With respect,
Roman

Thanks. This should fix it:
https://git.zx2c4.com/WireGuard/commit/?id=56e1ddb4091e8e9b60546891930c3829215ec63c