From patchwork Mon Jul 19 14:53:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 480446 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73231C07E95 for ; Mon, 19 Jul 2021 16:27:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DB17613EB for ; Mon, 19 Jul 2021 16:27:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345976AbhGSPqw (ORCPT ); Mon, 19 Jul 2021 11:46:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:42206 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349307AbhGSPo6 (ORCPT ); Mon, 19 Jul 2021 11:44:58 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B0ABA60C40; Mon, 19 Jul 2021 16:24:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626711866; bh=CcTgJfVEmbNFgL0EvxomN/vMbIEdDbKcKAhs6s8IAmo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lMJ45ySFLCBT0tggiBvjh6SFEUsZx3vS9Yx6GwqgfbUGxF8mhKh2hy13yv/Q8PsFw YvDDYEMgX3ECQhtEMqLJ6Z5pjlPvHZRozmzE37X5oW5JeE/sPCdiHVxI4JbvpPh5u4 FXQUJHcophuV22SBrAyQeGBvT6nk4jrvOrE0WCZA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Philip Yang , Felix Kuehling , Alex Deucher , Sasha Levin Subject: [PATCH 5.12 162/292] drm/amdkfd: fix sysfs kobj leak Date: Mon, 19 Jul 2021 16:53:44 +0200 Message-Id: <20210719144947.822785238@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144942.514164272@linuxfoundation.org> References: <20210719144942.514164272@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Philip Yang [ Upstream commit dcdb4d904b4bd3078fe8d4d24b1658560d6078ef ] 3 cases of kobj leak, which causes memory leak: kobj_type must have release() method to free memory from release callback. Don't need NULL default_attrs to init kobj. sysfs files created under kobj_status should be removed with kobj_status as parent kobject. Remove queue sysfs files when releasing queue from process MMU notifier release callback. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 14 ++++++-------- .../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 1 + 2 files changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 65803e153a22..d243e60c6eef 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -452,13 +452,9 @@ static const struct sysfs_ops procfs_stats_ops = { .show = kfd_procfs_stats_show, }; -static struct attribute *procfs_stats_attrs[] = { - NULL -}; - static struct kobj_type procfs_stats_type = { .sysfs_ops = &procfs_stats_ops, - .default_attrs = procfs_stats_attrs, + .release = kfd_procfs_kobj_release, }; int kfd_procfs_add_queue(struct queue *q) @@ -973,9 +969,11 @@ static void kfd_process_wq_release(struct work_struct *work) list_for_each_entry(pdd, &p->per_device_data, per_device_list) { sysfs_remove_file(p->kobj, &pdd->attr_vram); sysfs_remove_file(p->kobj, &pdd->attr_sdma); - sysfs_remove_file(p->kobj, &pdd->attr_evict); - if (pdd->dev->kfd2kgd->get_cu_occupancy != NULL) - sysfs_remove_file(p->kobj, &pdd->attr_cu_occupancy); + + sysfs_remove_file(pdd->kobj_stats, &pdd->attr_evict); + if (pdd->dev->kfd2kgd->get_cu_occupancy) + sysfs_remove_file(pdd->kobj_stats, + &pdd->attr_cu_occupancy); kobject_del(pdd->kobj_stats); kobject_put(pdd->kobj_stats); pdd->kobj_stats = NULL; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index eb1635ac8988..43c07ac2c6fc 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -153,6 +153,7 @@ void pqm_uninit(struct process_queue_manager *pqm) if (pqn->q && pqn->q->gws) amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info, pqn->q->gws); + kfd_procfs_del_queue(pqn->q); uninit_queue(pqn->q); list_del(&pqn->process_queue_list); kfree(pqn);