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Perez de Azpillaga" To: Dan Carpenter Cc: linux-staging@lists.linux.dev, Hans de Goede , Mauro Carvalho Chehab , Sakari Ailus , Andy Shevchenko , Greg Kroah-Hartman , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/2] media: atomisp: fix potential NULL pointer dereference in configure_isp_from_args() Message-ID: References: <20260328192721.255493-1-azpijr@gmail.com> <20260328192721.255493-2-azpijr@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@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: On Tue, Mar 31, 2026 at 08:07:43AM +0200, Jose A. Perez de Azpillaga wrote: > On Mon, Mar 30, 2026 at 12:35:30PM +0300, Dan Carpenter wrote: > > On Sat, Mar 28, 2026 at 08:21:37PM +0100, Jose A. Perez de Azpillaga wrote: > > > The function configure_isp_from_args() incorrectly dereferences > > > args->delay_frames[0] to configure cropping without checking if the > > > pointer is valid. However, as noted in a FIXME comment later in the > > > same function, delay_frames can be NULL in certain pipeline > > > configurations. > > > > The comment comes later in the function and it says "FIXME: > > args->delay_frames can be NULL here". "args->delay_frames" is > > different from "args->delay_frames[0]". Obviously > > args->delay_frames can't actually be NULL there since we > > dereference it here so the comment is wrong. > > > > If the correct response to the FIXME were just to add a NULL > > check then the original author probably would have done that. > > > > yes, I misunderstood the comment. my bad. I read more carefully. > edit: I'll read more carefully. > ... > > regards, > jose a. p-a