From patchwork Thu Mar 4 15:24:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tetsuo Handa X-Patchwork-Id: 12116491 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 EF0B4C43619 for ; Thu, 4 Mar 2021 15:27:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D24EA64F21 for ; Thu, 4 Mar 2021 15:27:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234796AbhCDP0r (ORCPT ); Thu, 4 Mar 2021 10:26:47 -0500 Received: from www262.sakura.ne.jp ([202.181.97.72]:62157 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234111AbhCDP0Y (ORCPT ); Thu, 4 Mar 2021 10:26:24 -0500 Received: from fsav302.sakura.ne.jp (fsav302.sakura.ne.jp [153.120.85.133]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 124FP2XR030900; Fri, 5 Mar 2021 00:25:02 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav302.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav302.sakura.ne.jp); Fri, 05 Mar 2021 00:25:02 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav302.sakura.ne.jp) Received: from localhost.localdomain (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 124FOtn0030882 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 5 Mar 2021 00:25:02 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) From: Tetsuo Handa To: Valentina Manea , Shuah Khan , Greg Kroah-Hartman Cc: Arnd Bergmann , linux-usb@vger.kernel.org, Tetsuo Handa Subject: [PATCH v4 00/12] usb: usbip: serialize attach/detach operations Date: Fri, 5 Mar 2021 00:24:43 +0900 Message-Id: <20210304152455.3685-1-penguin-kernel@I-love.SAKURA.ne.jp> X-Mailer: git-send-email 2.18.4 In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On 2021/02/27 0:04, Shuah Khan wrote: > I will send it out later on today. Since I haven't received it, here comes an update. Changes since v1: Tetsuo Handa found that the PTR_ERR() access in usbip_prepare_threads() in v1 was wrong, and fixed it in v2. Changes since v2: The kernel test robot found the same error using scripts/coccinelle/tests/odd_ptr_err.cocci and Julia Lawall sent us a patch, but nothing changed because that error was already fixed in v2. Changes since v3: Reduce lines changed in drivers/usb/usbip/stub_dev.c . Split into 12 patches. Tetsuo Handa (12): usb: usbip: introduce usbip_event_mutex for serialization usb: usbip: vhci: serialize attach_store()/detach_store() against event_handler() usb: usbip: vudc: serialize usbip_sockfd_store() against event_handler() usb: usbip: stub: serialize usbip_sockfd_store() against event_handler() usb: usbip: don't reset tcp_socket at vhci_device_reset() usb: usbip: fix error handling of kthread_get_run() usb: usbip: preallocate kernel threads for consistent attach operation usb: usbip: check that stream socket is used usb: usbip: vhci: add automatic recovery to attach_store() usb: usbip: vudc: add automatic recovery to usbip_sockfd_store() usb: usbip: stub: add automatic recovery to usbip_sockfd_store() usb: usbip: remove unused kthread_get_run() drivers/usb/usbip/stub_dev.c | 44 ++++++++++++++----------- drivers/usb/usbip/usbip_common.c | 55 ++++++++++++++++++++++++++++++++ drivers/usb/usbip/usbip_common.h | 25 ++++++++------- drivers/usb/usbip/usbip_event.c | 15 +++++++++ drivers/usb/usbip/vhci_hcd.c | 6 ---- drivers/usb/usbip/vhci_sysfs.c | 50 +++++++++++++++++++++-------- drivers/usb/usbip/vudc_sysfs.c | 50 +++++++++++++++++------------ 7 files changed, 176 insertions(+), 69 deletions(-)