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GET /api/1.1/patches/2220402/?format=api
{ "id": 2220402, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2220402/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260407075343.220555-2-acelan.kao@canonical.com/", "project": { "id": 15, "url": "http://patchwork.ozlabs.org/api/1.1/projects/15/?format=api", "name": "Ubuntu Kernel", "link_name": "ubuntu-kernel", "list_id": "kernel-team.lists.ubuntu.com", "list_email": "kernel-team@lists.ubuntu.com", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20260407075343.220555-2-acelan.kao@canonical.com>", "date": "2026-04-07T07:53:42", "name": "[SRU,Q,1/2] drm/amdgpu: validate the flush_gpu_tlb_pasid()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ec6cc0334e9583c6a6a2881d3aae3cfd3b011ae2", "submitter": { "id": 2976, "url": "http://patchwork.ozlabs.org/api/1.1/people/2976/?format=api", "name": "AceLan Kao", "email": "acelan.kao@canonical.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260407075343.220555-2-acelan.kao@canonical.com/mbox/", "series": [ { "id": 498933, "url": "http://patchwork.ozlabs.org/api/1.1/series/498933/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=498933", "date": "2026-04-07T07:53:41", "name": "BUG: kernel NULL pointer dereference in amdgpu(regression)", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498933/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2220402/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2220402/checks/", "tags": {}, "headers": { "Return-Path": "<kernel-team-bounces@lists.ubuntu.com>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=OY3C+rRn;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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envelope-from=acelan@gmail.com;\n helo=mail-pj1-f48.google.com", "X-BeenThere": "kernel-team@lists.ubuntu.com", "X-Mailman-Version": "2.1.20", "Precedence": "list", "List-Id": "Kernel team discussions <kernel-team.lists.ubuntu.com>", "List-Unsubscribe": "<https://lists.ubuntu.com/mailman/options/kernel-team>,\n <mailto:kernel-team-request@lists.ubuntu.com?subject=unsubscribe>", "List-Archive": "<https://lists.ubuntu.com/archives/kernel-team>", "List-Post": "<mailto:kernel-team@lists.ubuntu.com>", "List-Help": "<mailto:kernel-team-request@lists.ubuntu.com?subject=help>", "List-Subscribe": "<https://lists.ubuntu.com/mailman/listinfo/kernel-team>,\n <mailto:kernel-team-request@lists.ubuntu.com?subject=subscribe>", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "kernel-team-bounces@lists.ubuntu.com", "Sender": "\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>" }, "content": "From: Prike Liang <Prike.Liang@amd.com>\n\nBugLink: https://bugs.launchpad.net/bugs/2144577\n\nValidate flush_gpu_tlb_pasid() availability before flushing tlb.\n\nSigned-off-by: Prike Liang <Prike.Liang@amd.com>\nReviewed-by: Christian König <christian.koenig@amd.com>\nSigned-off-by: Alex Deucher <alexander.deucher@amd.com>\n(cherry picked from commit f4db9913e4d3dabe9ff3ea6178f2c1bc286012b8)\nSigned-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>\n---\n drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c\nindex 4814be022f328..84ade0f9f2f89 100644\n--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c\n+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c\n@@ -732,6 +732,10 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,\n \t\treturn 0;\n \n \tif (!adev->gmc.flush_pasid_uses_kiq || !ring->sched.ready) {\n+\n+\t\tif (!adev->gmc.gmc_funcs->flush_gpu_tlb_pasid)\n+\t\t\treturn 0;\n+\n \t\tif (adev->gmc.flush_tlb_needs_extra_type_2)\n \t\t\tadev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,\n \t\t\t\t\t\t\t\t 2, all_hub,\n", "prefixes": [ "SRU", "Q", "1/2" ] }