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Sun, 03 Nov 2024 01:43:34 -0700 (PDT) Received: from Emma ([2401:4900:1c20:13d0:5054:ff:fe53:2787]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7ee459f922dsm4968986a12.68.2024.11.03.01.43.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Nov 2024 01:43:33 -0700 (PDT) From: Karan Sanghavi Date: Sun, 03 Nov 2024 08:43:14 +0000 Subject: [PATCH] iio: invensense: fix integer overflow while multiplication 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241103-coverity1586045integeroverflow-v1-1-43ea37a3f3cd@gmail.com> X-B4-Tracking: v=1; b=H4sIAKE3J2cC/x2N2wqFIBBFfyXmOUFN69SvRA9lYw0cNDS6EP171 uPasPa6IGIgjNBkFwTcKJJ3CUSegZl7NyGjMTFILpUQXDLjt2Ssp9C/kitNbsUJwzvav9+ZGQZ b6EpVeqwhnSwBLR1foO3u+wE0IW41cAAAAA== To: Jonathan Cameron , Lars-Peter Clausen Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Anup , Karan Sanghavi X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1730623411; l=1223; i=karansanghvi98@gmail.com; s=20241017; h=from:subject:message-id; bh=a/cmqIv9J+CIlsXjQ/M3RlCzaHc6gd/T0Qs5c74O8WI=; b=4pbD0Bpo2rbd2IpAn9rFZPWQLxZLVVpeFGFzBjF67BeHrZk6TaQshxW4B2TVU1rJaACPIUeMu MOY8COXinRWDEN+dT4F4dP1QQUuKhTQz/bF8EciZQi4CZ6noQA9/zmd X-Developer-Key: i=karansanghvi98@gmail.com; a=ed25519; pk=UAcbefT1C06npNVDJHdgpPqTm4WE9IhaA1fmJb3A37Y= Typecast a variable to int64_t for 64-bit arithmetic multiplication Signed-off-by: Karan Sanghavi --- drivers/iio/common/inv_sensors/inv_sensors_timestamp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c b/drive= rs/iio/common/inv_sensors/inv_sensors_timestamp.c index f44458c380d9..d1d11d0b2458 100644 --- a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c +++ b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c @@ -105,8 +105,8 @@ static bool inv_update_chip_period(struct inv_sensors_t= imestamp *ts, =20 static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts) { - const int64_t period_min =3D ts->min_period * ts->mult; - const int64_t period_max =3D ts->max_period * ts->mult; + const int64_t period_min =3D (int64_t)ts->min_period * ts->mult; + const int64_t period_max =3D (int64_t)ts->max_period * ts->mult; int64_t add_max, sub_max; int64_t delta, jitter; int64_t adjust; --- base-commit: 81983758430957d9a5cb3333fe324fd70cf63e7e change-id: 20241102-coverity1586045integeroverflow-cbbf357475d9 Best regards, --=20 Karan Sanghavi