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Wed, 15 Jul 2026 23:55:43 -0700 (PDT) Date: Thu, 16 Jul 2026 09:55:36 +0300 From: Dan Carpenter To: Francesco Dolcini Cc: johannes.berg@intel.com, Georgi Valkov , briannorris@chromium.org, kees@kernel.org, bhelgaas@google.com, s.kerkmann@pengutronix.de, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v3] wifi: mwifiex: replace one-element arrays with flexible array members Message-ID: References: <202607150932.F2A0836@keescook> <20260716001728.57799-1-gvalkov@gmail.com> <20260716061638.GB9973@francesco-nb> <20260716063246.GA17850@francesco-nb> 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: <20260716063246.GA17850@francesco-nb> On Thu, Jul 16, 2026 at 08:32:46AM +0200, Francesco Dolcini wrote: > On Thu, Jul 16, 2026 at 09:27:23AM +0300, Dan Carpenter wrote: > > On Thu, Jul 16, 2026 at 08:16:38AM +0200, Francesco Dolcini wrote: > > > On Thu, Jul 16, 2026 at 03:17:28AM +0300, Georgi Valkov wrote: > > > > Replace deprecated one-element arrays with flexible array members. > > > > CONFIG_FORTIFY_SOURCE reports the following warning when > > > > one-element arrays are used as variable-length buffers: > > > > > > > > sta_cmd.c:1033 mwifiex_sta_prepare_cmd > > > > memcpy: detected field-spanning write (size 84) of single field > > > > "domain->triplet" at .../marvell/mwifiex/sta_cmd.c:1033 (size 3) > > > > > > > > Convert affected structs to use flexible array members. > > > > - Preserve existing wire layouts. > > > > - Use DECLARE_FLEX_ARRAY() for structs inside affected unions. > > > > > > > > Tested-on: WRT3200ACM, OpenWrt > > > > Signed-off-by: Georgi Valkov > > > > > > Cc: stable@vger.kernel.org # 6.12+ > > > Reviewed-by: Francesco Dolcini > > > > Are we CCing stable for this sort of thing? How many FORTIFY_SOURCE > > warnings are still remaining? > > Yes, you are right, my mistake. > > Johannes, please be sure to not have the stable tag in once you apply the > patch. Wait... No no. It was a serious question. I guess these warnings are pretty annoying for a real user on WRT so it's fine to CC stable. I just assumed these warnings were more common still. regards, dan carpenter