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[142.167.219.86]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7c958c92188sm85129885a.23.2025.04.24.06.08.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Apr 2025 06:08:13 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1u7wJJ-00000007U7r-1YtD; Thu, 24 Apr 2025 10:08:13 -0300 Date: Thu, 24 Apr 2025 10:08:13 -0300 From: Jason Gunthorpe To: Abhijit Gangurde Cc: shannon.nelson@amd.com, brett.creeley@amd.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, corbet@lwn.net, leon@kernel.org, andrew+netdev@lunn.ch, allen.hubbe@amd.com, nikhil.agarwal@amd.com, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Boyer Subject: Re: [PATCH 08/14] RDMA/ionic: Register auxiliary module for ionic ethernet adapter Message-ID: <20250424130813.GZ1213339@ziepe.ca> References: <20250423102913.438027-1-abhijit.gangurde@amd.com> <20250423102913.438027-9-abhijit.gangurde@amd.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250423102913.438027-9-abhijit.gangurde@amd.com> On Wed, Apr 23, 2025 at 03:59:07PM +0530, Abhijit Gangurde wrote: > +static int ionic_aux_probe(struct auxiliary_device *adev, > + const struct auxiliary_device_id *id) > +{ > + struct ionic_aux_dev *ionic_adev; > + struct net_device *ndev; > + struct ionic_ibdev *dev; > + > + ionic_adev = container_of(adev, struct ionic_aux_dev, adev); > + ndev = ionic_api_get_netdev_from_handle(ionic_adev->handle); It must not do this, the net_device should not go into the IB driver, like this that will create a huge complex tangled mess. The netdev(s) come in indirectly through the gid table and through the net notifiers and ib_device_set_netdev() and they should only be touched in paths dealing with specific areas. So don't use things like netdev_err, we have ib_err/dev_err and related instead for IB drivers to use. > +struct ionic_ibdev { > + struct ib_device ibdev; > + > + struct device *hwdev; > + struct net_device *ndev; Same here, this member should not exist, and it didn't hold a refcount for this pointer. Jason