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GET /api/1.1/patches/2229747/?format=api
{ "id": 2229747, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2229747/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260428164545.2782523-3-rkir@google.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260428164545.2782523-3-rkir@google.com>", "date": "2026-04-28T16:45:45", "name": "[v2,2/2] display: rutabaga: unparent MemoryRegions in unmap", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5ddcc4227bb795a6037efc075e9bc693be9289f0", "submitter": { "id": 78520, "url": "http://patchwork.ozlabs.org/api/1.1/people/78520/?format=api", "name": "Roman Kiryanov", "email": "rkir@google.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260428164545.2782523-3-rkir@google.com/mbox/", "series": [ { "id": 501905, "url": "http://patchwork.ozlabs.org/api/1.1/series/501905/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501905", "date": "2026-04-28T16:45:44", "name": "improve qom debugging and fix a dangling MemoryRegion in rutabaga", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/501905/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2229747/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2229747/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20251104 header.b=D02qVOQH;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tue, 28\n Apr 2026 09:45:57 -0700 (PDT)", "Date": "Tue, 28 Apr 2026 16:45:45 +0000", "In-Reply-To": "<20260428164545.2782523-1-rkir@google.com>", "Mime-Version": "1.0", "References": "<20260427154441.1918536-1-rkir@google.com>\n <20260428164545.2782523-1-rkir@google.com>", "X-Mailer": "git-send-email 2.54.0.545.g6539524ca2-goog", "Message-ID": "<20260428164545.2782523-3-rkir@google.com>", "Subject": "[PATCH v2 2/2] display: rutabaga: unparent MemoryRegions in unmap", "From": "Roman Kiryanov <rkir@google.com>", "To": "pbonzini@redhat.com, alex.bennee@linaro.org, marcandre.lureau@gmail.com", "Cc": "qemu-devel@nongnu.org, Roman Kiryanov <rkir@google.com>", "Content-Type": "text/plain; charset=\"UTF-8\"", "Received-SPF": "pass client-ip=2607:f8b0:4864:20::849;\n envelope-from=3ReTwaQQKCigVOMVKSSKPI.GSQUIQY-HIZIPRSRKRY.SVK@flex--rkir.bounces.google.com;\n helo=mail-qt1-x849.google.com", "X-Spam_score_int": "-95", "X-Spam_score": "-9.6", "X-Spam_bar": "---------", "X-Spam_report": "(-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001,\n USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "The virtio-gpu-rutabaga-device instance holds a\nhash table of child objects (`Object::properties`)\nand a memory region is added there every time\n`memory_region_init_ram_ptr` is called.\n\nThe `unmap_blob` call invalidates a `MemoryRegion`\nbut does not remove it from the device, which makes\npointers to the region dangling and eventually causes\na crash when those pointers are dereferenced.\n\nSigned-off-by: Roman Kiryanov <rkir@google.com>\n---\n hw/display/virtio-gpu-rutabaga.c | 1 +\n 1 file changed, 1 insertion(+)", "diff": "diff --git a/hw/display/virtio-gpu-rutabaga.c b/hw/display/virtio-gpu-rutabaga.c\nindex ebb6c783fb..5cd9b19336 100644\n--- a/hw/display/virtio-gpu-rutabaga.c\n+++ b/hw/display/virtio-gpu-rutabaga.c\n@@ -737,6 +737,7 @@ rutabaga_cmd_resource_unmap_blob(VirtIOGPU *g,\n \n MemoryRegion *mr = &(vr->memory_regions[slot].mr);\n memory_region_del_subregion(&vb->hostmem, mr);\n+ object_unparent(OBJECT(mr));\n \n vr->memory_regions[slot].resource_id = 0;\n vr->memory_regions[slot].used = 0;\n", "prefixes": [ "v2", "2/2" ] }