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

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Message-ID: <CA+icZUVsB48bgcm2bY_eN5iShCw4=T+=9k4E1ZFjkZWOrKpzHQ@mail.gmail.com>
Date:   Fri, 1 Jun 2018 19:56:57 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     linux-kernel@...r.kernel.org
Subject: Re: module: x86/modules: Skipping invalid relocation target, existing
 value is nonzero for type 1

On Fri, Jun 1, 2018 at 6:01 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> 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.
>

Looks like DKMS kernel-modules were built with gcc-7, unsure how to
force usage of clang-7.

- sed@ -