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Tue, 31 Mar 2026 06:13:08 -0400 From: Antoniu Miclaus To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , "David Lechner" , =?UTF-8?q?Nuno=20S=C3=A1?= , Greg Kroah-Hartman , Barry Song , , CC: Antoniu Miclaus Subject: [PATCH] iio: gyro: adis16260: fix division by zero in write_raw Date: Tue, 31 Mar 2026 13:13:00 +0300 Message-ID: <20260331101300.15853-1-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: 4kRBzAX96jNxprKeYBFZ236GsYRxI-Rp X-Authority-Analysis: v=2.4 cv=YJmSCBGx c=1 sm=1 tr=0 ts=69cb9e42 cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0sLvza09kfJOxVLZPwjg:22 a=N--XFCr6TIEc_64PeIT2:22 a=gAnH3GRIAAAA:8 a=VFAxbAMRY3LBiGym-ZcA:9 X-Proofpoint-GUID: 4kRBzAX96jNxprKeYBFZ236GsYRxI-Rp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzMxMDA5OCBTYWx0ZWRfXyWrOaXpNVh7W y2qqKP9KfPdWU1Th/uzDxItGsJ6cmdgaangFhOXNvghH9aZPi6bXT1CFIy1Sxi9jCVjHXek5KvC W6atA7aKEob19O+BLrgquWgydSAocJRxPTKOmUwhFevZSJ1d91xK/c16mn4qxPzJmuL6SMFA6z2 Lw5VPF9Qv4Skov/cGjTDFif4Z+lq5R6qVwFLjnMecfI9gFxKoI6N9JNfEDLhxXSE5ZakH4tY57P MnLRnJCLKE5XpQBs258/cxLuIGSjI1pwrs/IHvidbNNLEtjuOLmo+NWsp11Ch6jT8lgBr++J4Nx +cjVzLqIH4KFQ8k5Hcbfkr2q0Tr1veQ4HTRfaJlhF6MRdGza5Wfn8S5ayqTHBEg6W2niY53ta1L aVcRg3px3QhqBNwulHd3qlRz+M+IpTfwvjHw+onLS+4aJOd6aJ8cr9EMJVHsUZI9LXOcPr3afAX Q03NU87qAESvrGD8keg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-31_02,2026-03-28_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 suspectscore=0 malwarescore=0 adultscore=0 spamscore=0 lowpriorityscore=0 phishscore=0 clxscore=1011 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603310098 Content-Type: text/plain; charset="utf-8" Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero to the sampling_frequency sysfs attribute triggers a division by zero in the kernel. Fixes: 089a41985c6c ("staging: iio: adis16260 digital gyro driver") Signed-off-by: Antoniu Miclaus Reviewed-by: Nuno S=C3=A1 --- drivers/iio/gyro/adis16260.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c index 586e6cfa14a9..91b9c5f18ec4 100644 --- a/drivers/iio/gyro/adis16260.c +++ b/drivers/iio/gyro/adis16260.c @@ -287,6 +287,9 @@ static int adis16260_write_raw(struct iio_dev *indio_de= v, addr =3D adis16260_addresses[chan->scan_index][1]; return adis_write_reg_16(adis, addr, val); case IIO_CHAN_INFO_SAMP_FREQ: + if (val <=3D 0) + return -EINVAL; + if (spi_get_device_id(adis->spi)->driver_data) t =3D 256 / val; else --=20 2.43.0