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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48a8fe92b3asm91140665e9.4.2026.05.04.05.45.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 May 2026 05:45:33 -0700 (PDT) Date: Mon, 4 May 2026 13:45:32 +0100 From: David Laight To: Zhang Xiaolei Cc: linux-gpio@vger.kernel.org, brgl@kernel.org, warthog618@gmail.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/3] tools: gpio: use strscpy() for consumer name Message-ID: <20260504134532.0438e390@pumpkin> In-Reply-To: <20260504075036.12190-1-zxl434815272@gmail.com> References: <20260503190016.13439-1-zxl434815272@gmail.com> <20260504075036.12190-1-zxl434815272@gmail.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) 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-Transfer-Encoding: 7bit On Mon, 4 May 2026 15:50:34 +0800 Zhang Xiaolei wrote: > Replace strcpy() with strscpy() to avoid potential buffer overflow > when copying the consumer string. You ought to run code before submitting patches. This wasn't even compiled. -- David > > Signed-off-by: Zhang Xiaolei > --- > tools/gpio/gpio-utils.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/gpio/gpio-utils.c b/tools/gpio/gpio-utils.c > index 4096bcd511d1..176bccfcccb0 100644 > --- a/tools/gpio/gpio-utils.c > +++ b/tools/gpio/gpio-utils.c > @@ -82,7 +82,7 @@ int gpiotools_request_line(const char *device_name, unsigned int *lines, > req.offsets[i] = lines[i]; > > req.config = *config; > - strcpy(req.consumer, consumer); > + strcpy(req.consumer, consumer, sizeof(req.consumer)); > req.num_lines = num_lines; > > ret = ioctl(fd, GPIO_V2_GET_LINE_IOCTL, &req);