Re: [PATCH v2 2/2] module: Merge same-name module load requests

[Prarit Bhargava]

On 10/18/22 14:33, Luis Chamberlain wrote:
> On Sat, Oct 15, 2022 at 11:27:10AM +0200, Petr Pavlu wrote:
> > The patch does address a regression observed after commit 6e6de3dee51a
> > ("kernel/module.c: Only return -EEXIST for modules that have finished
> > loading"). I guess it can have a Fixes tag added to the patch.
> >
> > I think it is hard to split this patch into parts because the implemented
> > "optimization" is the fix.
>
> git describe --contains 6e6de3dee51a
> v5.3-rc1~38^2~6
>
> I'm a bit torn about this situation. Reverting 6e6de3dee51a would be the
> right thing to do, but without it, it still leaves the issue reported
> by Prarit Bhargava. We need a way to resolve the issue on stable and
> then your optimizations can be applied on top.
>
> Prarit Bhargava, please review Petry's work and see if you can come up
> with a sensible way to address this for stable.

Thanks for the heads up Luis.  I'll take a closer look.  [A long time 
ago] I could swear we made a very targeted decision to *NOT* allow 
modules with the same name to be loaded into the kernel.  What's changed 
that we think this is okay to do today?

Thanks,

P.

>    Luis