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[42.98.155.143]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b1058a7b29sm5647629a91.10.2026.11.07.21.22.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Nov 2026 21:22:15 -0800 (PST) From: Aveline Noir Subject: [PATCH 0/2] drm/amdkfd: fix SVM error handling Date: Sun, 08 Nov 2026 16:13:32 +1100 Message-Id: <20261108-kfd-svm-baseline-errors-20261107-v1-0-9ef4008019ab@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/zWNyw6CMBBFf4XM2kl4iKi/YlyUdoBRac2MEhPCv 9uiLM/NzTkzKAmTwjmbQWhi5eAjFLsM7GB8T8guMpR5eSiK/Ij3zqFOI7ZG6cGekESCKP4PDVZ 1bSqX231zKiFqnkIdf9bE5fpjfbc3sq/kTY+kwlaMt0OatkIXhLj3OIkZN321dmFZvi4pfai5A AAA X-Change-ID: 20261108-kfd-svm-baseline-errors-20261107-355a3d0c4792 To: Felix Kuehling , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= Cc: David Airlie , Simona Vetter , Philip Yang , Sunil Khatri , honghuan@amd.com, honglei1.huang@amd.com, psirt@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.16.0 These patches fix two error paths found while reviewing KFD SVM range handling. A failed interval notifier registration can leave a published range without a notifier, and an HMM allocation failure can lead to a NULL notifier dereference during validation. The fixes were tested with targeted KUnit tests under KVM with KASAN and lockdep. The error paths use injected failures or equivalent failure states; no AMD GPU was tested. --- Aveline Noir (2): drm/amdkfd: handle SVM interval notifier registration failures drm/amdkfd: check HMM errors before testing range validity drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 58 +++++++++++++++++++++++++++--------- 1 file changed, 44 insertions(+), 14 deletions(-) --- base-commit: 6628e7d4c6b25c8d18f1345e3a20d21829aae7e4 change-id: 20261108-kfd-svm-baseline-errors-20261107-355a3d0c4792 Best regards, -- Aveline Noir