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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d04b0ea002sm8396045ad.49.2026.07.31.10.27.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 31 Jul 2026 10:27:37 -0700 (PDT) Message-ID: <440d1bf6-4b6e-4c87-b80d-4e6dc1a65639@oss.qualcomm.com> Date: Fri, 31 Jul 2026 10:27:36 -0700 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [BUG] ath12k: NULL deref in ath12k_mac_op_hw_scan() when a scan is requested during firmware recovery (IPQ5332 + QCN9274) To: Kamil Bienkiewicz , linux-wireless@vger.kernel.org, Jeff Johnson Cc: ath12k@lists.infradead.org References: <20260731094141.2410630-1-perceivalpercy@gmail.com> From: Jeff Johnson Content-Language: en-US In-Reply-To: <20260731094141.2410630-1-perceivalpercy@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: ySfROcIWXYFZbTWE024iSRiGMOl5OeEd X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMxMDEzNCBTYWx0ZWRfX+ACAc/2RpQ+j 02IjG9pjXDqhChvRRwl0T70JOLY4mo90UKZYMZizMEe0MI2BxtUzIfem36xNCyKxRKT9qckHwY7 o8kTY23HO2CPFsuF/PBcHZ5QpxqZ03U5kClS1iGSclnW70ZNh2JUJ0B8jepvCB03jM1zQQoK6Fn TdZPAh3oGYLWrFRzwjuTJTk2Z5zPC9Hjk0SEZ7nZpQfPUCb6HGRQHIqtw5uZHF+PmIC/OY50Vq6 OfDGhj+BQ71foZ8p9eiIz+7f9bJHwZeaIudWangb0FsR49npLoD1DeN2WCLP5vGpPbalunCjq94 BwVa9agYVEm7v+44ReFMVtB6JlBBmBeK2mE2vgMIN3WbiKGxcVbKqgHsc9wcHSSb0cXr1axpVHR sCm5aQ1nSIl6T71RndsRF/O9BGlou+eKq8gLTunkZtfzZuDEHACFp9WQ0kTCEuKzP/9p3mAjUU7 0qMgYIE3248PCO2PT8A== X-Proofpoint-GUID: ySfROcIWXYFZbTWE024iSRiGMOl5OeEd X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMxMDEzNCBTYWx0ZWRfX1I4qZkGMwwzJ 8twPW3/tUWnnU1+Kqf7Mv6RavKyOA7DuSaRxQCkrBbW95jhly+8tw3Waa3K0dXDLqMX8TlOC1zC j2k69vB+2HKZsPZmhumDRoGre9ZIHIg= X-Authority-Analysis: v=2.4 cv=b+uCJNGx c=1 sm=1 tr=0 ts=6a6cdb0a cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=sTRtGAPE7L7RgN1B:21 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=VwQbUJbxAAAA:8 a=TK4Lw8CIhuz7GhaftzcA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-31_05,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 adultscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 clxscore=1015 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607310134 On 7/31/2026 2:41 AM, Kamil Bienkiewicz wrote: > Hi, > > A scan request that arrives while the device is recovering from a firmware > crash oopses the kernel in ath12k_mac_op_hw_scan(). Because the oops reboots > the AP and the same firmware crash tends to recur on the next boot, this > presents as a boot loop rather than a one-off crash. > > Hardware: GL.iNet GL-BE9300 (Flint 3) - IPQ5332 (ath12k_wifi7 AHB, 2.4 GHz) > + QCN9274 (ath12k_wifi7_pci, 5/6 GHz) > Kernel: 6.18.39, OpenWrt build, ath12k as out-of-tree module (Tainted: O) Unless you reproduce this with the upstream kernel you should be reporting this to the OpenWrt team, not here. If you reproduce with the upstream kernel, see: https://wireless.docs.kernel.org/en/latest/en/users/drivers/ath12k/bugreport.html /jeff