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GET /api/patches/2225431/?format=api
{ "id": 2225431, "url": "http://patchwork.ozlabs.org/api/patches/2225431/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com>", "list_archive_url": null, "date": "2026-04-21T04:02:36", "name": "[1/4] gpu: host1x: Fix iommu_map_sgtable() return value check", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c6ad3f3184442d1b8c366f35b78c34d367ec3056", "submitter": { "id": 26499, "url": "http://patchwork.ozlabs.org/api/people/26499/?format=api", "name": "Mikko Perttunen", "email": "mperttunen@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com/mbox/", "series": [ { "id": 500722, "url": "http://patchwork.ozlabs.org/api/series/500722/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/list/?series=500722", "date": "2026-04-21T04:02:35", "name": "Fix checking of iommu_map_sgtable return value", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500722/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225431/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225431/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-tegra+bounces-13824-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-tegra@vger.kernel.org" ], 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header.d=nvidia.com; arc=none" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com;\n s=selector2;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=YPWTdT4KtuTtHVukyHQdVWRzZmls5rOfCuG71RrhY4A=;\n b=lIEeZpu8jQSQ5rU78aHBdi3ldEB6KdZpsfi4HycFL94BJYpNbMsdb2Ozz1zt+Qhtr4wMOOZuKws+ai5Ie4Cdp9RisLRd/UQtN7iYL80jytWMtgbeuASwMnguGANmScOn6XcW/fBwJbaoBPVaX5lVyd2PiNSZ0DPLAXfCgVkodLuWnIGGcUFQWjSGFlc/P7IrQqxnurD5T6rdKFJSkd2DpKtDl7+d4qs7gXLlfKYQ/qWFgLaX5kcMbRSBn8hp1K3Zn2J8TyO47OototUEDnfO9m9wlHMUsslEwel188zMC/d+LKq/JCCqpVmXE8T8KWKR4iv9ZID6IfvMNGLwLUjRDw==", "From": "Mikko Perttunen <mperttunen@nvidia.com>", "Date": "Tue, 21 Apr 2026 13:02:36 +0900", "Subject": "[PATCH 1/4] gpu: host1x: Fix iommu_map_sgtable() return value\n check", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com>", "References": 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"X-MS-Exchange-AntiSpam-MessageData-1": "k0iXgAtCnrDB/A==", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 1ec29c1f-328c-467b-9220-08de9f5affae", "X-MS-Exchange-CrossTenant-AuthSource": "SJ2PR12MB9161.namprd12.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "21 Apr 2026 04:03:51.9632\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n KdUX274CUIGFL1h4g4ERd2h9ZNxrf9JY/0FzqjxdHM9sgVMm13X1t90/Rpxb9yE0HJA8IKIPReeonBB4MhtHVQ==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PH7PR12MB7985" }, "content": "Commit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable.\n\nFixes: ad8f36e4b6b1 (\"iommu: return full error code from iommu_map_sg[_atomic]()\")\nSigned-off-by: Mikko Perttunen <mperttunen@nvidia.com>\n---\n drivers/gpu/host1x/job.c | 10 ++++++----\n 1 file changed, 6 insertions(+), 4 deletions(-)", "diff": "diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c\nindex 3ed49e1fd933..70bda32f1ff4 100644\n--- a/drivers/gpu/host1x/job.c\n+++ b/drivers/gpu/host1x/job.c\n@@ -235,6 +235,8 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)\n \t\t}\n \n \t\tif (host->domain) {\n+\t\t\tssize_t map_err;\n+\n \t\t\tfor_each_sgtable_sg(map->sgt, sg, j)\n \t\t\t\tgather_size += sg->length;\n \n@@ -248,11 +250,11 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)\n \t\t\t\tgoto put;\n \t\t\t}\n \n-\t\t\terr = iommu_map_sgtable(host->domain, iova_dma_addr(&host->iova, alloc),\n-\t\t\t\t\t\tmap->sgt, IOMMU_READ);\n-\t\t\tif (err == 0) {\n+\t\t\tmap_err = iommu_map_sgtable(host->domain, iova_dma_addr(&host->iova, alloc),\n+\t\t\t\t\t\t map->sgt, IOMMU_READ);\n+\t\t\tif (map_err < 0) {\n \t\t\t\t__free_iova(&host->iova, alloc);\n-\t\t\t\terr = -EINVAL;\n+\t\t\t\terr = map_err;\n \t\t\t\tgoto put;\n \t\t\t}\n \n", "prefixes": [ "1/4" ] }