linux-kernel - Re: [GIT PULL] kbuild changes for v4.9-rc1

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Date:   Sat, 15 Oct 2016 17:22:05 -0700
From:   Omar Sandoval <osandov@...ndov.com>
To:     Michal Marek <mmarek@...e.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        adobriyan@...il.com, npiggin@...il.com, sfr@...b.auug.org.au,
        viro@...iv.linux.org.uk, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] kbuild changes for v4.9-rc1

On Fri, Oct 14, 2016 at 10:12:46PM +0200, Michal Marek wrote:
> Hi Linus,
> 
> please pull these kbuild changes for v4.9-rc1:
> 
> - EXPORT_SYMBOL for asm source by Al Viro. This does bring a regression,
>   because genksyms no longer generates checksums for these symbols
>   (CONFIG_MODVERSIONS). Nick Piggin is working on a patch to fix this.
>   Plus, we are talking about functions like strcpy(), which rarely
>   change prototypes.

So this has broken all module loading for me. I get the following dmesg
spew:

...
[    4.586914] scsi_mod: no symbol version for memset
[    4.587920] scsi_mod: Unknown symbol memset (err -22)
[    4.588443] scsi_mod: no symbol version for ___preempt_schedule
[    4.589026] scsi_mod: Unknown symbol ___preempt_schedule (err -22)
...

Reverting 784d5699eddc ("x86: move exports to actual definitions") fixes
it for me. This is with GCC 6.2.1, binutils 2.27, attached config.

-- 
Omar

View attachment "qemu.config" of type "text/plain" (113297 bytes)