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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-992ee4e7453sm3074546241.11.2026.10.30.09.37.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 30 Oct 2026 09:37:10 -0700 (PDT) Message-ID: <722539b2-829a-43af-897a-c2524cc28fdb@oss.qualcomm.com> Date: Fri, 30 Oct 2026 10:37:08 -0600 X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/3] drm/drm_ras: Remove admin-perm flag from list-nodes operation To: Zack McKevitt , dri-devel@lists.freedesktop.org, netdev@vger.kernel.org, riana.tauro@intel.com, aravind.iddamsetty@linux.intel.com, rodrigo.vivi@intel.com, raag.jadav@intel.com, simona.vetter@ffwll.ch, airlied@gmail.com, kuba@kernel.org, ogabbay@kernel.org, lizhi.hou@amd.com, karol.wachowski@linux.intel.com Cc: carl.vanderlip@oss.qualcomm.com, troy.hanson@oss.qualcomm.com, youssef.abdulrahman@oss.qualcomm.com References: <20261029203000.1763447-1-zachary.mckevitt@oss.qualcomm.com> <20261029203000.1763447-2-zachary.mckevitt@oss.qualcomm.com> Content-Language: en-US From: Jeff Hugo In-Reply-To: <20261029203000.1763447-2-zachary.mckevitt@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: soCatPbljxjtzGbeOaRTuDDuivs4mKG2 X-Proofpoint-ORIG-GUID: soCatPbljxjtzGbeOaRTuDDuivs4mKG2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDMwMDA2NiBTYWx0ZWRfX43ExsHu9l3kR uGxJqA23E9r1j6LK2YN4JTS/BUaqNR9mONWyHnnybt+0jTfwwzFZ9RPWc3VYLeF6AbbXC+tqObn ztSKeyFeJWTD8i2HtUuyuJizalKFKYPYLKQ75yeDgakfTuUNLkRuXYgcS6PtlALffuVUje3lQMg 8FgvOx3ymyo97W2rf1dUmaCCnigBsTL2keH1PwM1ZTd97XWrJvqHqbDmPV2zHN3tVG4Yhcl5+HD LEpe2A/f16eb53tdIcEeilSw86WQAwRgqbQY9ev5vSfyEKkiWkHQDuV6Qf4qRWls+jAWa/k5v3V 3D2PiP8FRtzJjbAzg2pyziKTEof8W/jj7ie8ZXm2kkckERM0Eg8U56v5FWA8OorYiBGfajr0YBb 0qMlXr4XPZUikgXfDa2WTQ2p1oAkcPYv2BrDdQQbGmvoUS4+o4vxH/ERumzagIFhAaVSUTnycH2 Q6AWYqVdRPH1NT0cWkA== X-Authority-Analysis: v=2.4 cv=dPgzC+Zb c=1 sm=1 tr=0 ts=6ae4c7b8 cx=c_pps a=DUEm7b3gzWu7BqY5nP7+9g==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=QyXUC8HyAAAA:8 a=EUspDBNiAAAA:8 a=rKidIdNGGuosbOtXPGgA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=-aSRE8QhW-JAV6biHavz:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDMwMDA2NiBTYWx0ZWRfX3uwl6GU5zfZl dytPh0qLdYZw32ZaepITA1G2oSAnIclnj5j/8BaBn82MrhdLyBqz3T32zCM2RNxevCrXqMUJmm+ nF24Nb3HFaPJfeju1Tmchl+jSfwU14w= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-30_05,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 spamscore=0 malwarescore=0 clxscore=1011 priorityscore=1501 lowpriorityscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610300066 On 10/29/2026 2:29 PM, Zack McKevitt wrote: > Drivers may want to avoid requiring CAP_NET_ADMIN for subsequent > drm-ras operations. However, userspace must still be able to access > the list of RAS nodes to determine the node IDs. So, drop the > CAP_NET_ADMIN requirement for dumping RAS nodes so that drivers > with different permission requirements are still able to use the > interface. > > Additionally, initialize the return value to zero in > drm_ras_nl_list_nodes_dumpit to avoid leaking uninitialized kernel > memory (especailly now that this function no longer requires admin > permissions). > > This prepares the interface to be used for telemetry by the qaic > driver. > > Reviewed-by: Rodrigo Vivi > Signed-off-by: Zack McKevitt Reviewed-by: Jeff Hugo