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[130.180.211.218]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a17f486b6fsm52614375e9.1.2026.10.07.06.34.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Oct 2026 06:34:08 -0700 (PDT) Message-ID: <6e73ffc6-41ee-4ea0-a9e3-3286d6c72cb8@oss.qualcomm.com> Date: Wed, 7 Oct 2026 15:34:03 +0200 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH] tools/thermal/tmon: Fix string truncation warning in optarg copy To: Florian Fainelli , linux-kernel@vger.kernel.org Cc: bcm-kernel-feedback-list@broadcom.com, "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Jacob Pan , "open list:THERMAL" References: <20260929201951.408456-1-florian.fainelli@broadcom.com> Content-Language: en-US From: Daniel Lezcano In-Reply-To: <20260929201951.408456-1-florian.fainelli@broadcom.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA3MDA1MyBTYWx0ZWRfX8RhPlBO3Kq3D CK9+dT8dl7g8rldn1OiGnusRlymzu+OWsEt9BHbL06Agj2o2ws4AYs1OinArtHwCJxlsWIheijH XwAUGb5LcA/w/cZppA4TfGadpQASRqg= X-Proofpoint-ORIG-GUID: Cp1Mu_A4POoI09Sy7y3B4TTByZOIQ_Z_ X-Proofpoint-GUID: Cp1Mu_A4POoI09Sy7y3B4TTByZOIQ_Z_ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA3MDA1MyBTYWx0ZWRfX2vWAjuv0yzks fcWAwr1kr1nwyw+Snt+g/SrF6KkSdVRoduFfixyqsJjA4Uuk2CzxGdsTIoa/spFHmRQjNiJo0AR cSucwE2x6J1DqT0wzGAnQxk1Vt1MtrR3nIs+xVSt2srQctGqiPhS3wxeKtmTcsmBMmzEvFqyWij 7gWn6RtKUVHYT8rLZfXTfKIcg1X5bEgL5mpqGuhIFz6Q8+s6uJxvMtMiD6uUAhmyoRuEA1GiSic 2iiwwQGmMvGCg84TjAzWpZeL4raZob/s6URQzfVzHgIgifs/gqDWkJmyNutplu44Wlns2HA+SJh QyU+RGksCENlb1N+4FIzruFrSX8y3ucA3JYGF4POapPkAmseyARMMI5dFSv9jftAU+FXZF8xXPo qPPf1jSAIK/k7SZ+Byq59FWF+uPz4m+WWoGFjYptxOURGt3RIEuAxFOXLQPSqz9fl03Lr5L/m/z 43xnQXFueYXVz1JLLFQ== X-Authority-Analysis: v=2.4 cv=Af0kjHXG c=1 sm=1 tr=0 ts=6ac64a53 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=uw/3876vWhRnNVL35W6mqQ==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=Q-fNiiVtAAAA:8 a=s7NgktmowLUAvCqQ5TwA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-07_04,2026-10-06_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 spamscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610070053 On 9/29/26 22:19, Florian Fainelli wrote: > GCC warns about possible string truncation with -Wstringop-truncation: > > tmon.c: In function ‘main’: > tmon.c:233:25: warning: ‘__builtin_strncpy’ specified bound 20 equals > destination size [-Wstringop-truncation] > 233 | strncpy(ctrl_cdev, optarg, > CDEV_NAME_SIZE); > | > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Replace strncpy() with snprintf() to guarantee NUL-termination and > silence the compiler warning. > > Fixes: 94f69966faf8 ("tools/thermal: Introduce tmon, a tool for thermal subsystem") > Signed-off-by: Florian Fainelli > --- Applied, thanks