From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.53.65 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1793142962; b=AvIvYupA4X7jVeU/LMno0QkLZMtf645unZTg2FPtb2LOnmvoP1JGLFNIjRRZPQwx8l7X mUw95NakQqBQJZlthmVDYvHIQuyddh6nTBhxNu7enhhROKvMjhmEQa7dHfHBRmNqP8EHt 2BScLErOz5kUBIlBx+99LR/1tzm4G4khcFwn3F7pLgDMo4LK1Vq5UPmSOeNfxTAAW45ld Amolcxd+VxczMBIGJHi52lTceuvKOi58y9hrYrxoh3zZ5Atv3vh04eLAn+an8QKB1EQqw qvb7703pLUg28nf5nPVeczBwHubgSNeFvHccd/B+6ptSAwuVKuFlZOwvl51Wu7BT+Vw== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793142962; h=DMARC-Filter:DKIM-Signature:Received:Received:Message-ID:Date: User-Agent:Subject:To:Cc:References:Content-Language:From: Organization:In-Reply-To:Content-Type:Content-Transfer-Encoding: X-ClientProxiedBy:MIME-Version:X-MS-PublicTrafficType: X-MS-TrafficTypeDiagnostic:X-MS-Office365-Filtering-Correlation-Id: X-MS-Exchange-SenderADCheck:X-MS-Exchange-AntiSpam-Relay: X-Microsoft-Antispam:X-Microsoft-Antispam-Message-Info: X-Forefront-Antispam-Report: X-MS-Exchange-AntiSpam-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-MessageData-0:X-OriginatorOrg: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-AuthSource:X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-OriginalArrivalTime: X-MS-Exchange-CrossTenant-FromEntityHeader: X-MS-Exchange-CrossTenant-Id:X-MS-Exchange-CrossTenant-MailboxType: X-MS-Exchange-CrossTenant-UserPrincipalName: X-MS-Exchange-Transport-CrossTenantHeadersStamped; bh=7ISyHKlVAcM0/DZJiGCw/9XLIFyiBD/SzVNJUBpkA0g=; b=IdGHutgvxHeFEQCMlHexL/JJ4hjLgffRu7devAk9sZJqdc92lrNDx2tiU9zVqKceH1/k +uRwz+6S7ffzb6MRI0rc11MsXfcz9xnDn2RMtJxFi5+hCnJNzWeykhYy68LGtIGdMg478 L/xStZEY+7LAbsWIiUTf0/7CPr/s5rcazRqGU8T11mvC3f90ZlxKvqMC9QRWEeNh6Rbd5 KuCGJisV4MXnpQ7eBDpkcan545uWkV4obZhGkDX3Pa4cwK3gIzmq6EnshAIVy5rn5LOiS XtjAi6QKTMlVphAJjAsRxih5Naa8aIVtxgpYxVog2S/tfg5ntkULY90A+fd2+vf971A== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b="Gt/46kow"; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.53.65 Received: from BL0PR03CU003.outbound.protection.outlook.com (mail-eastusazon11012065.outbound.protection.outlook.com [52.101.53.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (secp384r1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA74860A3802; Tue, 27 Oct 2026 23:15:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org AA74860A3802 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b=Gt/46kow ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=SQ0rtxs2yHtePTZKSKD03j2Lp/EMu3QXDUf/w94nK9S+l9CYSX+7Cr9paPIDE4/M19m4Ca8X79C0uz89dK22pQ72n+cDOzmWDU3wG0TK0yKs4K0jp/3oIuLOfP+nbdP0y8i3vmhQd6gwRl02mrcu4ByiN+RZ8GhgbCqALGUlndhuhHv5OsXsAxiLkHufzubfHg7vmeVMkxluO80yGDKOOnS0fKbHULE0sAh1LIqaFZh7Oc+5k5hucReBYuB1hA4t0UzQYIJe2FEpnsVIbRa9NCcLN7pveLT71fbGYNPKuH2nmC/bxE/gcjOhOCp6OTi2iVqnf3pdkgdpQpEn7LUOPQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=7ISyHKlVAcM0/DZJiGCw/9XLIFyiBD/SzVNJUBpkA0g=; b=b0JQW2AEqPk0iP8a9Zub+egPaFvQ3Dhf84zHirwe+SMZ7cbPs0/46tOcyBL2VHwrITCNhqMvFDlSoVfjuzHpvUShZ2rRyprTXr+2xJHEoJtCrTCq/qSxBvu1X+whIr0SBZqudOvFV+Hk0pqnT9+l0aBVaqR9sTE4zuLh7oD9DA/M4D0Ueo2m9Y8cv2Gf98xBykKP/uu4UIBVJHmiEFpJmW4xFNhe6B0hlBOktB/K8r+61T/36+0AhC60Iv3KqqvTCz8hoMyjiY36xf8h5RBGR+GrDYg27t4fE/Kc+iK6EFaxySSCcUo3nJ6cU/d5ZkkJsU5IyxzbTYJgerhci1O+lg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7ISyHKlVAcM0/DZJiGCw/9XLIFyiBD/SzVNJUBpkA0g=; b=Gt/46kowYNiZfGLkAVE6OaDkSSnYpqckrOor/qJPeSdsHwKMTjjCglaYc28asPRHN0TIJ5YbjWWz+FYDCNfl7LBI4K+P4kmPsVpQwcgoeixgHICmsdDLcX6F6xw3v88rW98z6lgDsR4c0TCgFyOXraesRF/6osIb1OZDO9j2J/Y= Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from BN7PPF5F16C5C9C.namprd12.prod.outlook.com (2603:10b6:40f:fc02::607) by DM6PR12MB4186.namprd12.prod.outlook.com (2603:10b6:5:21b::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.22; Tue, 27 Oct 2026 23:15:52 +0000 Received: from BN7PPF5F16C5C9C.namprd12.prod.outlook.com ([fe80::67a7:9feb:71ef:964a]) by BN7PPF5F16C5C9C.namprd12.prod.outlook.com ([fe80::67a7:9feb:71ef:964a%8]) with mapi id 15.21.0546.021; Tue, 27 Oct 2026 23:15:52 +0000 Message-ID: <34272fe1-e5cb-490e-9053-a2fa72f29a10@amd.com> Date: Tue, 27 Oct 2026 19:15:49 -0400 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 8/9] drm/amdkfd: Free queue in procfs_queue_type kobject release callback To: Ian Rogers , Kees Cook , Greg Kroah-Hartman , Miguel Ojeda , "Rafael J . Wysocki" , Danilo Krummrich Cc: Nathan Chancellor , Nick Desaulniers , Miguel Ojeda , =?UTF-8?Q?Christian_K=C3=B6nig?= , Zhihao Cheng , Zhongqiu Han , Sumanth Korikkar , Bill Wendling , Justin Stitt , driver-core@lists.linux.dev, llvm@lists.linux.dev, linux-hardening@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, linux-s390@vger.kernel.org, gfs2@lists.linux.dev, xen-devel@lists.xenproject.org, linux-mtd@lists.infradead.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Alex Deucher , David Airlie , Simona Vetter , Amber Lin References: <20261027223847.652884-1-irogers@google.com> <20261027223847.652884-9-irogers@google.com> Content-Language: en-US From: Felix Kuehling Organization: AMD Inc. In-Reply-To: <20261027223847.652884-9-irogers@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: YT1PR01CA0099.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:2c::8) To BN7PPF5F16C5C9C.namprd12.prod.outlook.com (2603:10b6:40f:fc02::607) X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN7PPF5F16C5C9C:EE_|DM6PR12MB4186:EE_ X-MS-Office365-Filtering-Correlation-Id: c4a9363e-e46d-4dba-1360-08df34803e8c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|366016|1800799024|7416014|376014|261009223027099003|261022105027099003|261021121427099003|261021123027099003|10067099003|56012099006|22082099003|18002099003|4143699003|11063799006|261026140227099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BN7PPF5F16C5C9C.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(23010399003)(366016)(1800799024)(7416014)(376014)(261009223027099003)(261022105027099003)(261021121427099003)(261021123027099003)(10067099003)(56012099006)(22082099003)(18002099003)(4143699003)(11063799006)(261026140227099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?empiQldXdGliaGFsc1JwOFdmQWViK0VFMlV5Vi80MnI1WW9tc1ZiSmNVN0VZ?= =?utf-8?B?VVlhOHVzVFliZ0NScEx0OUxNVm13eUppMm9OU25NRGNUcWRrWFYwaVl4dDg2?= =?utf-8?B?RUU3S2dPSk1taGxzbU1LV3lRQUhDK0FOcFZrdTBtQ29YeW43cnB2RnQyV0F2?= =?utf-8?B?SlVET3F3d0V6aU42S3dwSXIzaGdLOFo2THJwTEx4YXRDVHdWR1pzcjN5TUtF?= =?utf-8?B?Y1pEKytxd3QyaUJQQmtkRWVNWG91eFcycWlvKzBldjhGZk82em0xQ09sV0VC?= =?utf-8?B?R0VFZW90dUpLeDF4TVI1U2tLN0kycXlpRnplRlR3SzFPRDlqcjdoS3hKbks4?= =?utf-8?B?RXBIK1d1cDIrbjJjUWc0RVdKZGltKzdPNFBlVUx5MTRTSmZER2g3NTlLNUFn?= =?utf-8?B?WU5DOU84OG82cE8zc2ZBUVJYT3dxQ0JtemUxODk2QXpUb2xESG1RUzdid1B5?= =?utf-8?B?ZnZneE03VHk1S1BhRzhtNE1XQmxQOVRPb05IOUhaeUhqblVtVExxR2ovOUdC?= =?utf-8?B?NjNIbE91c2JwcXJtYktKN2ZDaDAzeVZ1YkErT2Q2RVJDc3Q4bDc0aHFhZVNX?= =?utf-8?B?V1hMUWZKU0t2R01HVEhaTEVKamFqMUZXd1luS2NaM0ozKzV1dldwUDlaMkRk?= =?utf-8?B?YTljQlN1SXVJQlM0UjNrSWdieVpMWFdESEI1STNQVHJUK3k5eW1rYWRLbXA0?= =?utf-8?B?V0g0bmYwSlBLcksrNUZ5NlJyUGM3bWw3TDlCR2Izc2U5STNpRGxKUEthN2cv?= =?utf-8?B?TjhyYStvUDhVTjFIYVNDenJJVHFSZ2JpTmVHK0VEYVZKSlByVC9QS0pFcVJ0?= =?utf-8?B?emI2ekJBVFpXNXozYnVLRXdTUURLb2VDeldlOFE3MERLVlZYWnVzSGhkVDlt?= =?utf-8?B?YW94OTFabFhWem5pdEhQWlRDMFZNMldkUmJ3dXdjdnE2R0FudUdXZzdLM2lG?= =?utf-8?B?Q1JkWXh5NVpGRFFOdGtNS2oxUnZ2M1JwbjBtV0s2Y1BIT1NuZ0JWTCs0Q01J?= =?utf-8?B?ZUJINmtIY1ZlRjdUVmNESENuSUNQV25pdTBaaXNHVEs3K1FYSU4xYlcvN09m?= =?utf-8?B?SllmR0NqRkxFcUh4ZEJYekJpOGpHdDAxRGFJNUJUQ3RjODQzZUN2aVlVOWNw?= =?utf-8?B?TEM0SFZrcE0yR1A0bFNoK1lHK2VOZXE2dENJcXZQanBRckJKUTh5elVKOU9O?= =?utf-8?B?RVFmTjhrTkZnTHN0RzFDTEkxR2hMUW9zYTBJNnBTbnRhMWVEUmphanFmT1E4?= =?utf-8?B?YVBKeE9FdUNNZEtZUm5lZGp6NGVRUnRudGhSWGROd2E5OEE3blArVVFvTmI5?= =?utf-8?B?cHpEZm1TUGpYZVNjSzZFeHBTeGNFYm1FUTIwbmVGazh3NmM3MHZtSkREZjBh?= =?utf-8?B?d1pndkJnUEJaR0ZMUUJyb2greDJ3OHJRRE8xTy93SVpuamNaakVtNVhOc0pL?= =?utf-8?B?WG5KZDdhcGRzZG9zTCtpOGJqZFY2dmswVjBmMjR6aDYyc2JjK2s3MDJ5M1R0?= =?utf-8?B?bHNNSk9mN0FPUjhCcWRKUW5mQnBqUStZU1pobllGSGdUa0h6WjBld203OE8w?= =?utf-8?B?TytZc1ZpekF3cTJxakZvQU94dUdLT2hHTVIxKzRaMldRQk9HTTVRcS9hNm45?= =?utf-8?B?WDJIK0h4TUJyUVNqSkk1RTJRTGYwY3dvSWdrNW45MnErY3FlS3BFc280SFE0?= =?utf-8?B?MXNNM203SnA4VGMzMnMycVpSdjdlWENnSEQ4dlNzSHF1ckV0RzBiZ0xLKzcw?= =?utf-8?B?anJZS01PZUpOTVJIa2h3VXFRTzd0YlBySVIwN2NqQ3UyNnM1d09Bc0YrVEVj?= =?utf-8?B?VTk2d0ZINllJWWh0bmtXdmw3dlhyTVEyL1B2a2gwSFY1dEM5c3NYWUFLTmp5?= =?utf-8?B?cVUvM3ZWRkwxTnQyQ3UyeUUwWS96QVgvamo0c21UVTYzOFlaZWRmVWxQTU92?= =?utf-8?B?ZzhEZmtYVkVkTm9ldER3RDMrS3ZqMDBZZEp1Y1ZxVnhDS2lFOTRoR1F3OWVi?= =?utf-8?B?NmFocUZqT2pIakJlT2FnY2ZGdFZNL0Q5aDhGOWNxT3dmbk1tOHpxZGk4TzZO?= =?utf-8?B?c3pucmhJT2ZqZFpvSDRTN0dqYW5ITzFtQVBBQlhKUi8zcEtsdlJKOUFEd2k3?= =?utf-8?B?KzVzS3ZWZ1FDODJnYlQ3YzBGL0ZDaVJNOUJQdGJEVHhCdjZoWGZ5SEs0T1JT?= =?utf-8?B?UXJBeWZBVWRpaEJKU2ViQldVbEN3T3pKb1AxdlNTdkZOTGVUU1d0VmdjYWNj?= =?utf-8?B?T0Y0a3FYcFRwTzdqLzFhNjRGd0Z0VTZaR0dhaWFBNmhqVDdWd3gvdDFJbGpR?= =?utf-8?B?dm0weUVFNDI4VVNXWVZIbVp0L1g4ODlKOWREaE00SjRFSjJ0M0liZz09?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: c4a9363e-e46d-4dba-1360-08df34803e8c X-MS-Exchange-CrossTenant-AuthSource: BN7PPF5F16C5C9C.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Oct 2026 23:15:52.0995 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Ob+TKLRgRvAPv0Q9NjDGMWPP+1+Q+RZGLPVUAzRJKfxvNbAWmbA/GcQ++WN0aIUSZde9N19st+by1XpDYPKkRg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4186 On 2026-10-27 18:38, Ian Rogers wrote: > struct queue embeds a struct kobject (q->kobj) for procfs entries, but > procfs_queue_type had no .release callback and uninit_queue() freed q > immediately after kfd_procfs_del_queue() called kobject_put(&q->kobj). > With CONFIG_DEBUG_KOBJECT_RELEASE=y, this causes a use-after-free. > > Add kfd_procfs_queue_release() to free struct queue from the kobject > release callback, change kfd_procfs_del_queue() to only remove the > kobject from sysfs via kobject_del(), and drop the final reference in > uninit_queue() via kobject_put(). Check q->kobj.state_in_sysfs before > calling kobject_del() in kfd_procfs_del_queue() to avoid warnings if > sysfs creation previously failed. > > Fixes: 6d220a7e7971 ("drm/amdkfd: Add queue information to sysfs") > Signed-off-by: Ian Rogers Reviewed-by: Felix Kuehling > --- > drivers/gpu/drm/amd/amdkfd/kfd_process.c | 12 +++++++++--- > drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 5 ++++- > 2 files changed, 13 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c > index 226f52626e84..8e6136d52a50 100644 > --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c > @@ -512,7 +512,15 @@ static const struct sysfs_ops procfs_queue_ops = { > .show = kfd_procfs_queue_show, > }; > > +static void kfd_procfs_queue_release(struct kobject *kobj) > +{ > + struct queue *q = container_of(kobj, struct queue, kobj); > + > + kfree(q); > +} > + > static const struct kobj_type procfs_queue_type = { > + .release = kfd_procfs_queue_release, > .sysfs_ops = &procfs_queue_ops, > .default_groups = procfs_queue_groups, > }; > @@ -552,7 +560,6 @@ int kfd_procfs_add_queue(struct queue *q) > if (ret < 0) { > pr_warn("Creating proc//queues/%u failed", > q->properties.queue_id); > - kobject_put(&q->kobj); > return ret; > } > > @@ -697,11 +704,10 @@ static void kfd_procfs_add_sysfs_files(struct kfd_process *p) > > void kfd_procfs_del_queue(struct queue *q) > { > - if (!q || !q->process->kobj) > + if (!q || !q->process || !q->process->kobj || !q->kobj.state_in_sysfs) > return; > > kobject_del(&q->kobj); > - kobject_put(&q->kobj); > } > > int kfd_process_create_wq(void) > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c > index ae3e7c54014a..4666110aebe0 100644 > --- a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c > @@ -83,7 +83,10 @@ int init_queue(struct queue **q, const struct queue_properties *properties) > > void uninit_queue(struct queue *q) > { > - kfree(q); > + if (q && q->kobj.state_initialized) > + kobject_put(&q->kobj); > + else > + kfree(q); > } > > #if IS_ENABLED(CONFIG_HSA_AMD_SVM)