Re: [PATCH] x86_32: Fix module version table mismatch.

From: Andy Shevchenko
Date: Wed Apr 24 2013 - 07:24:27 EST

On Wed, Apr 24, 2013 at 1:13 PM, James Hogan <james.hogan@xxxxxxxxxx> wrote:
> On 24/04/13 02:00, H. Peter Anvin wrote:
>> On 04/23/2013 05:52 PM, H. Peter Anvin wrote:

>> Either way -- James, Rusty, this is in your court.
> How does the patch below look? I presume this is preferred over
> making VMLINUX_SYMBOL_STR non-argument-expanding?

I will test it soon.

> Subject: [PATCH 1/1] modpost: fix unwanted VMLINUX_SYMBOL_STR expansion
> Commit a4b6a77b77ba4f526392612c2365797fab956014 ("module: fix symbol
> versioning with symbol prefixes") broke the MODVERSIONS loading of any
> module using memcmp (e.g. ipv6) on x86_32, as it's defined to
> __builtin_memcmp which is expanded by VMLINUX_SYMBOL_STR. Use
> __VMLINUX_SYMBOL_STR instead which doesn't expand the argument.
> Reported-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>

To be strongly correct Tetsuo and me reported about it and Tetsuo did
first analysis.

> Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

With Best Regards,
Andy Shevchenko
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