linux-kernel - module: x86/modules: Skipping invalid relocation target, existing value is nonzero for type 1

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Date:   Fri, 1 Jun 2018 18:01:58 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     linux-kernel@...r.kernel.org
Subject: module: x86/modules: Skipping invalid relocation target, existing
 value is nonzero for type 1

Hi,

can someone tell me what this exactly means?

What is the root cause for this?
GNU binutils/ld?
Compiler?
Curently I test with clang-7.
VirtualBox and compiler incompatible?

Steps to reproduce the failure...

root# modprobe -v vboxdrv
insmod /lib/modules/4.14.47-1-iniza-llvmlinux/updates/dkms/vboxdrv.ko
modprobe: ERROR: could not insert 'vboxdrv': Exec format error

root# dmesg | tail -1
[13437.021825] module: x86/modules: Skipping invalid relocation
target, existing value is nonzero for type 1, loc ffffffffc1453360,
val ffffffffc142f8a2

Tanks in advance.

Regards,
- Sedat -