From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AB8953385BB; Tue, 21 Oct 2025 13:50:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.217 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761054614; cv=none; b=GuF5G2dfa4qzM1M0g5lbYGwIWNQ+j5NBH0UEXBn5bHct+lALlwWzOndVIup6ESi4eCpyAiMlAaNGZjigjn7YlwiK5vo/byWwmNiX17fKKhrANJB1FKPfClP+OijFarQJApjz4XbdrL3ECkb+D8JZYcBmHKw4crxwQkmOBso5ykI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761054614; c=relaxed/simple; bh=S25G2AZzcgMcGlIiX0c+8ROaue2MIMhb9CwLPOFSdN4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=SOBRVvYtob0NQSSdARKNncJkDcLvoxYWAsomTho3QEdzxU8yP71GHFOpyZZpKLD4GUQpzxPGGd3VntHYNLYnoRQA6nPLgF4GcQ/QYUzE3nrwVSTRvhsDyoV7RXIRV4zbbFm/iSJ/Y2XREVDxAedGTXQLDhcTvycYzIrEZPM9fKs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=3u+gyWWJ; arc=none smtp.client-ip=113.46.200.217 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="3u+gyWWJ" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=afOO440E+h5xHJ+e1TzERB4wQNYDt+r2P7A9Bix2Pck=; b=3u+gyWWJMgMaTiyHlNmjXxSGPnavB/WBNxw29ieA2bnx28EtyDSIDHRUWqaWCh5yx9kMuMwe8 XR8xJtMUy+pZDmlZGmOzC0xJtjdd6ibGLx8xq9LkVcKuAkNgRDmTokNZXm2FBxYpylJ0ySJnmbV w4lpV1D3roQK6MuvqKzafug= Received: from mail.maildlp.com (unknown [172.19.163.48]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4crYYM1DfYzcZyT; Tue, 21 Oct 2025 21:48:55 +0800 (CST) Received: from dggemv706-chm.china.huawei.com (unknown [10.3.19.33]) by mail.maildlp.com (Postfix) with ESMTPS id C4CED18007F; Tue, 21 Oct 2025 21:50:04 +0800 (CST) Received: from kwepemq200001.china.huawei.com (7.202.195.16) by dggemv706-chm.china.huawei.com (10.3.19.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 21 Oct 2025 21:50:04 +0800 Received: from localhost.huawei.com (10.90.31.46) by kwepemq200001.china.huawei.com (7.202.195.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 21 Oct 2025 21:50:04 +0800 From: Chenghai Huang To: , , CC: , , , , , , Subject: [PATCH v3 0/4] uacce: driver fixes for memory leaks and state management Date: Tue, 21 Oct 2025 21:49:59 +0800 Message-ID: <20251021135003.786588-1-huangchenghai2@huawei.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: kwepems200001.china.huawei.com (7.221.188.67) To kwepemq200001.china.huawei.com (7.202.195.16) This patch series addresses several issues in the uacce: 1.Memory leak fix when device registration fails. 2.Fix sysfs file creation conditions. 3.Add error reporting for unsupported mremap operations. 4.Ensuring safe queue release with proper state management. --- Changes in v3: - Move the checks for the 'isolate_strategy_show' and 'isolate_strategy_store' functions to their respective call sites. - Use kobject_put to release the cdev memory instead of modifying cdev to be a static structure member. - Link to v2: https://lore.kernel.org/all/20250916144811.1799687-1-huangchenghai2@huawei.com/ Changes in v2: - Use cdev_init to allocate cdev memory to ensure that memory leaks are avoided. - Supplement the reason for intercepting the remapping operation. - Add "cc: stable@vger.kernel.org" to paths with fixed. - Link to v1: https://lore.kernel.org/all/20250822103904.3776304-1-huangchenghai2@huawei.com/ Chenghai Huang (2): uacce: fix isolate sysfs check condition uacce: ensure safe queue release with state management Wenkai Lin (1): uacce: fix for cdev memory leak Yang Shen (1): uacce: implement mremap in uacce_vm_ops to return -EPERM drivers/misc/uacce/uacce.c | 55 ++++++++++++++++++++++++++++++-------- 1 file changed, 44 insertions(+), 11 deletions(-) -- 2.33.0