From mboxrd@z Thu Jan 1 00:00:00 1970 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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 5C798C31E46 for ; Wed, 12 Jun 2019 10:38:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26B052082C for ; Wed, 12 Jun 2019 10:38:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=web.de header.i=@web.de header.b="pkZ3HlON" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2408937AbfFLKis (ORCPT ); Wed, 12 Jun 2019 06:38:48 -0400 Received: from mout.web.de ([212.227.17.12]:35415 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407474AbfFLKis (ORCPT ); Wed, 12 Jun 2019 06:38:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1560335920; bh=w7Zapu97qEenwfGP8VjODN6jV86L8V7ffF+//76IatM=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=pkZ3HlONe4+40eHueQucv6Xeqc1A/rYbNkDUO3XhfCvN/rCGD8DODqaj7aT2ayAzG SKgDsJ/kn16PZRo9/AWahOg2zy5pLqDUyJj9rVQNFzGF4vzA8U3A44+GJaZMGawj0r 7hih7dCuoPuVICCCQnKvH6N+wEDl4DSUjGGGcMhQ= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.43.108] ([89.15.237.104]) by smtp.web.de (mrweb101 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MZlZK-1hwOLh1sdC-00LXk3; Wed, 12 Jun 2019 12:38:39 +0200 Subject: Re: [PATCH] Revert "usb: core: remove local_irq_save() around ->complete() handler" To: Sebastian Andrzej Siewior Cc: Greg Kroah-Hartman , Alan Stern , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20190531215340.24539-1-smoch@web.de> <20190531220535.GA16603@kroah.com> <6c03445c-3607-9f33-afee-94613f8d6978@web.de> <20190601105008.zfqrtu6krw4mhisb@linutronix.de> <20190601110247.v4lzwvqhuwrjrotb@linutronix.de> From: Soeren Moch Message-ID: Date: Wed, 12 Jun 2019 12:38:29 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190601110247.v4lzwvqhuwrjrotb@linutronix.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:ITNzeUPAh3LVNjomSsgP/7ESekNXFtNIcYrM8VUzfhsiM22HdCO CWmklggNCUM0Uf4ZW2ZKTToWeTInSyP6JbGKafvWIP6EWHdDZ71Pic8v2sQXSlSz0jBYdKl SGZjq3HugqgJi0zhQl0zw3gbMgJkoqf1rUw4h/RS4cNzv4oVRvhzG6IYNcFsJbSKrM9sDd2 GexEeIchvU8IqpVb1PH6Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:mKTjyQwiRoo=:jxymFFKr2qEOQchX/kGA8F 3Vb44yIm2uxAibNMScG0Q39c+yZMRO6Ly82yoN7ZYkQUTw1ddGd0AOeD1R93IgHeBuA3LPpy2 S3iibh9PXMiC6laGMQJwPtB+A8OSQ/+H0w/IoxCB7NP8tocZP/qSvTcismqjjnagJi1npxKuM 1iNNDnt66/53JrWALQqNghnE8FJKBojKSkjHkGzlcL3nAhjwCdshD5J1fnd0uYqsxZIcUPIh4 cW8KC0rxuNegknB+zqQ6pSqfGO/jV8HKJhYJ2vgvMVVmhIBb2emrR0IZVUT02TwxDebHRlDC/ GTVLvx2Fi2PVW6EZ5CQUAhHbdNGLU6uzkl41o9TiiukD7TtubMMD8sraRwHT3t3bb6GhDeOjw OplazHsqxLjy0BLOD+mHKUTVhGvjtWrE4YKBzLnYowpcI/gkuNGgx5tbUQRnPmyKDLKy0Cxjg IbZr5ePmwgpPQWMc0mbUf5zp2pmDOYlqrjD+D2CJUKBAnfKotceym9fPSx5lXW8RRU3uXczmN LK9bSO2wcomdNUp+YB/wGDVc/c6hrHMAymlMNYQ5FZCVgQtJ7y5YgWN8hj/dufE/b3qsDM01f /s1Bsh3WM3EWSyytA1I9Qqap9KUnV+lpV1nAdGfYsDmkx1QOjZ6lrvV1SBW/wfGQvpCHPnxMT mUmx6LBPAAK2SS/6jNghnknFFXKCIwmDTvQUVOf5K5wP/piVV4sjyqWRV6O3stnyOPxcsuuyx VvaasqNBwSmDoO3o9SMlaYIMrtZso+46ZshdYIByDkmxlioKlNylR3ClB5F0mYQeCYrFe02uk /ji5C80f7yyJKg5Ul0cAYhNCv9PjD+K1rxsmPewnnISdhDP8DZ60omTmzmeOaeib16XBiym4o t2g62ePBcjlcdTYku3h6tYD0oslZl7BdCDEN1sdEmMbrinwVU1BYZ9ahU9PiMufHEmiZEGg54 VFcLhy9Yh5+ruw1LmrwvUJsa/Gpq+JbVYvzfhZJyiv/SARdiciy9NAssRSZdLhEe2WT6KEX1e 5A== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01.06.19 13:02, Sebastian Andrzej Siewior wrote: > On 2019-06-01 12:50:08 [+0200], To Soeren Moch wrote: >> I will look into this. > > nothing obvious. If there is really blocken lock, could you please > enable lockdep > |CONFIG_LOCK_DEBUGGING_SUPPORT=3Dy > |CONFIG_PROVE_LOCKING=3Dy > |# CONFIG_LOCK_STAT is not set > |CONFIG_DEBUG_RT_MUTEXES=3Dy > |CONFIG_DEBUG_SPINLOCK=3Dy > |CONFIG_DEBUG_MUTEXES=3Dy > |CONFIG_DEBUG_WW_MUTEX_SLOWPATH=3Dy > |CONFIG_DEBUG_RWSEMS=3Dy > |CONFIG_DEBUG_LOCK_ALLOC=3Dy > |CONFIG_LOCKDEP=3Dy > |# CONFIG_DEBUG_LOCKDEP is not set > |CONFIG_DEBUG_ATOMIC_SLEEP=3Dy > > and send me the splat that lockdep will report? > Nothing interesting: [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 5.1.0 (root@matrix) (gcc version 7.4.0 (Debian 7.4.0-6)) #6 SMP PREEMPT Wed Jun 12 11:28:41 CEST 2019 [ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=3D10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt: Machine model: TBS2910 Matrix ARM mini PC ... [ 0.000000] rcu: Preemptible hierarchical RCU implementation. [ 0.000000] rcu: RCU lockdep checking is enabled. ... [ 0.003546] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.003657] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.003713] ... MAX_LOCK_DEPTH: 48 [ 0.003767] ... MAX_LOCKDEP_KEYS: 8191 [ 0.003821] ... CLASSHASH_SIZE: 4096 [ 0.003876] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.003931] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.003986] ... CHAINHASH_SIZE: 32768 [ 0.004042] memory used by lock dependency info: 5243 kB Nothing else. When stopping hostapd after it hangs: [ 903.504475] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 14 failed to flush Soeren