Bug#939845: modprobe: ERROR: could not insert 'wireguard': Exec format error

[Michel Meyers]

Hello,

I'm seeing the same issue with kernel 4.19.0-2-amd64.
Trying to manually compile the module also gives this result:

------------
root@server:/usr/src/wireguard-0.0.20190905# uname -a
Linux server 4.19.0-2-amd64 #1 SMP Debian 4.19.16-1 (2019-01-17) x86_64 
GNU/Linux
root@server:/usr/src/wireguard-0.0.20190905# make module
ver="#define WIREGUARD_VERSION \"\"" && \
[ "$(cat version.h 2>/dev/null)" != "$ver" ] && \
echo "$ver" > version.h || true
  CC [M]  /usr/src/wireguard-0.0.20190905/main.o
  CC [M]  /usr/src/wireguard-0.0.20190905/noise.o
  CC [M]  /usr/src/wireguard-0.0.20190905/device.o
  CC [M]  /usr/src/wireguard-0.0.20190905/peer.o
  CC [M]  /usr/src/wireguard-0.0.20190905/timers.o
  CC [M]  /usr/src/wireguard-0.0.20190905/queueing.o
  CC [M]  /usr/src/wireguard-0.0.20190905/send.o
  CC [M]  /usr/src/wireguard-0.0.20190905/receive.o
  CC [M]  /usr/src/wireguard-0.0.20190905/socket.o
  CC [M]  /usr/src/wireguard-0.0.20190905/peerlookup.o
  CC [M]  /usr/src/wireguard-0.0.20190905/allowedips.o
  CC [M]  /usr/src/wireguard-0.0.20190905/ratelimiter.o
  CC [M]  /usr/src/wireguard-0.0.20190905/cookie.o
  CC [M]  /usr/src/wireguard-0.0.20190905/netlink.o
  CC [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/chacha20/chacha20.o
  PERLASM 
/usr/src/wireguard-0.0.20190905/crypto/zinc/chacha20/chacha20-x86_64.S
  AS [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/chacha20/chacha20-x86_64.o
  CC [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/poly1305/poly1305.o
  PERLASM 
/usr/src/wireguard-0.0.20190905/crypto/zinc/poly1305/poly1305-x86_64.S
  AS [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/poly1305/poly1305-x86_64.o
  CC [M]  /usr/src/wireguard-0.0.20190905/crypto/zinc/chacha20poly1305.o
  CC [M]  /usr/src/wireguard-0.0.20190905/crypto/zinc/blake2s/blake2s.o
  AS [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/blake2s/blake2s-x86_64.o
  CC [M]  
/usr/src/wireguard-0.0.20190905/crypto/zinc/curve25519/curve25519.o
  LD [M]  /usr/src/wireguard-0.0.20190905/wireguard.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /usr/src/wireguard-0.0.20190905/wireguard.mod.o
  LD [M]  /usr/src/wireguard-0.0.20190905/wireguard.ko
root@server:/usr/src/wireguard-0.0.20190905# insmod wireguard.ko
insmod: ERROR: could not insert module wireguard.ko: Invalid module 
format
root@server:/usr/src/wireguard-0.0.20190905# dmesg -T
[Fri Sep 20 09:58:36 2019] module: x86/modules: Skipping invalid 
relocation target, existing value is nonzero for type 1, loc 
0000000069137dca, val ffffffffc10f4086
------------

-- Michel