Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 4 May 2021 17:22:22 -0300
From:   Jason Gunthorpe <jgg@ziepe.ca>
To:     Nathan Chancellor <nathan@kernel.org>
Cc:     Kees Cook <keescook@chromium.org>,
        Doug Ledford <dledford@redhat.com>,
        Leon Romanovsky <leon@kernel.org>,
        Parav Pandit <parav@nvidia.com>,
        Sami Tolvanen <samitolvanen@google.com>,
        linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
        clang-built-linux@googlegroups.com
Subject: Re: CFI violation in drivers/infiniband/core/sysfs.c
Message-ID: <20210504202222.GB2047089@ziepe.ca>
References: <20210402195241.gahc5w25gezluw7p@archlinux-ax161>
 <202104021555.08B883C7@keescook>
 <20210403065559.5vebyyx2p5uej5nw@archlinux-ax161>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20210403065559.5vebyyx2p5uej5nw@archlinux-ax161>
Precedence: bulk

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