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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35c22a81744sm3722286a91.5.2026.03.26.23.24.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2026 23:24:39 -0700 (PDT) From: Jie Gan Date: Fri, 27 Mar 2026 14:24:14 +0800 Subject: [PATCH] coresight: cti: fix the check condition in inout_sel_store 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: <20260327-fix-cti-issue-v1-1-2c8921e21fc8@oss.qualcomm.com> X-B4-Tracking: v=1; b=H4sIAI4ixmkC/x2MQQqAIBAAvyJ7bsG0FPpKdJDcai8WbkUQ/j3pO DAzLwhlJoFBvZDpZuE9VWgbBfMW0krIsTIYbZy2xuPCD84nI4tchDbG0FPnrFs81ObIVIX/N06 lfA9OaO1fAAAA To: Suzuki K Poulose , Mike Leach , James Clark , Leo Yan , Alexander Shishkin , Mathieu Poirier , Greg Kroah-Hartman , Tingwei Zhang Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jie Gan X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774592676; l=1343; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=PHLgFLCWkaQZgK2oamDHEceLvZuYDINcKa5e6t1/okI=; b=RfkCfonJCGjf541GPmnu3znQaLRzKPdcsp1Q8oKE7wGMlvLKWPqembbAfpTme3oZFPi9aSJKG Pljv/N5YcciAdW9o1ANQvNnBriac0NyZTcXSnMsV50dZoebBwDGRend X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Proofpoint-GUID: kvuWDATmgoq5QoW6N4M2LoF_6UjbfRkG X-Authority-Analysis: v=2.4 cv=bopBxUai c=1 sm=1 tr=0 ts=69c622a8 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=Wt3R2UjphL3Wk0r5Cq0A:9 a=QEXdDO2ut3YA:10 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-ORIG-GUID: kvuWDATmgoq5QoW6N4M2LoF_6UjbfRkG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI3MDA0NiBTYWx0ZWRfXwECp9RC+GnFc 4qjJ2HNslo9kaIbfl8q58kwS0AH7MYzfprVJvjUi+T18x5xxPTMMKNWIlLoj+yBs03M35xA1WF9 NIj1GoCZjFeFodXJ3d0h8EH9vhJVlDRQJlKJ4T3bDhfAkqgtpZEUVMnr0x8nXj4MouX1c/KwAEf Z7vh9nTFO09QIBhAvNfmzGYA96GJ0nBggWt3GubpfyRB6U14vbDcm4OXml2jT+AKE9RTR98D9UN essMTcfco5wz0GF3aqmqf32S5K1NfS0rrYwmYvAej94ElryujpxBczGTXP7zIarXYjMz5ru5Z9+ OdYdsMa1VeiXsymUUNegQ6Mw4m7eA7k3N6gzAmxihRglioe5lgfbOvUFO35/eMlSoDMwZ+PSvW8 xpYHRGMPquHw433tZEklFMieSIrfZWdMybxBn3tzSz6WUwRZjgyPV5j+67OYjjp3mWwPFSrfuwL iZnYb+CnDNHcMhdUIQg== 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=2026-03-26_04,2026-03-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 suspectscore=0 malwarescore=0 adultscore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603270046 Correct the upper bound from CTIINOUTEN_MAX to config->nr_trig_max, since nr_trig_max varies across CTI devices. An out-of-bounds issue occurs when a value greater than config->nr_trig_max is provided, leading to unexpected errors. Fixes: b5213376c240 ("coresight: cti: Add sysfs access to program function = registers") Signed-off-by: Jie Gan Reviewed-by: Leo Yan --- drivers/hwtracing/coresight/coresight-cti-sysfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-cti-sysfs.c b/drivers/hw= tracing/coresight/coresight-cti-sysfs.c index 4c0a60840efb..bf3c73607c1c 100644 --- a/drivers/hwtracing/coresight/coresight-cti-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-cti-sysfs.c @@ -337,10 +337,11 @@ static ssize_t inout_sel_store(struct device *dev, { unsigned long val; struct cti_drvdata *drvdata =3D dev_get_drvdata(dev->parent); + struct cti_config *config =3D &drvdata->config; =20 if (kstrtoul(buf, 0, &val)) return -EINVAL; - if (val > (CTIINOUTEN_MAX - 1)) + if (val >=3D config->nr_trig_max) return -EINVAL; =20 guard(raw_spinlock_irqsave)(&drvdata->spinlock); --- base-commit: e77a5a5cfe43b4c25bd44a3818e487033287517f change-id: 20260327-fix-cti-issue-3dda5e4636f7 Best regards, --=20 Jie Gan