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Message-ID: <20210504202222.GB2047089@ziepe.ca>
Date:   Tue, 4 May 2021 17:22:22 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Doug Ledford <dledford@...hat.com>,
        Leon Romanovsky <leon@...nel.org>,
        Parav Pandit <parav@...dia.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: CFI violation in drivers/infiniband/core/sysfs.c

On Fri, Apr 02, 2021 at 11:55:59PM -0700, Nathan Chancellor wrote:
> > So, I think, the solution is below. This hasn't been runtime tested. It
> > basically removes the ib_port callback prototype and leaves everything
> > as kobject/attr. The callbacks then do their own container_of() calls.
> 
> Well that appear to be okay from a runtime perspective.

This giant thing should fix it, and some of the other stuff Greg observed:

https://github.com/jgunthorpe/linux/commits/rmda_sysfs_cleanup

It needs some testing before it gets posted

Jason

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