Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754091AbbHUKVn (ORCPT ); Fri, 21 Aug 2015 06:21:43 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:36794 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752636AbbHUKVk (ORCPT ); Fri, 21 Aug 2015 06:21:40 -0400 From: poma Subject: Re: WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90() To: Linux Kernel list , Peter Zijlstra , Rusty Russell , Laura Abbott References: <55C916F0.8010303@gmail.com> Cc: linux-media Message-ID: <55D6FBB0.5000709@gmail.com> Date: Fri, 21 Aug 2015 12:21:36 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: <55C916F0.8010303@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3454 Lines: 72 On 10.08.2015 23:26, poma wrote: > > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90() > Modules linked in: mxl5007t af9013 ... dvb_usb_af9015(+) ... dvb_usb_v2 dvb_core rc_core ... > CPU: 1 PID: 813 Comm: systemd-udevd Not tainted 4.2.0-0.rc6.git0.1.fc24.x86_64+debug #1 > ... > Call Trace: > [] dump_stack+0x4c/0x65 > [] warn_slowpath_common+0x86/0xc0 > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] warn_slowpath_null+0x1a/0x20 > [] module_assert_mutex_or_preempt+0x49/0x90 > [] __module_address+0x32/0x150 > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] __module_text_address+0x16/0x70 > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] ? af9013_read_ucblocks+0x20/0x20 [af9013] > [] symbol_put_addr+0x29/0x40 > [] dvb_frontend_detach+0x7d/0x90 [dvb_core] > [] dvb_usbv2_probe+0xc85/0x11a0 [dvb_usb_v2] > [] af9015_probe+0x84/0xf0 [dvb_usb_af9015] > [] usb_probe_interface+0x1bb/0x2e0 > [] driver_probe_device+0x1f6/0x450 > [] __driver_attach+0x94/0xa0 > [] ? driver_probe_device+0x450/0x450 > [] bus_for_each_dev+0x73/0xc0 > [] driver_attach+0x1e/0x20 > [] bus_add_driver+0x1ee/0x280 > [] driver_register+0x60/0xe0 > [] usb_register_driver+0xad/0x160 > [] ? 0xffffffffa0567000 > [] af9015_usb_driver_init+0x1e/0x1000 [dvb_usb_af9015] > [] do_one_initcall+0xb3/0x200 > [] ? kmem_cache_alloc_trace+0x355/0x380 > [] ? do_init_module+0x28/0x1e9 > [] do_init_module+0x60/0x1e9 > [] load_module+0x21f7/0x28d0 > [] ? m_show+0x1b0/0x1b0 > [] ? sched_clock+0x9/0x10 > [] ? local_clock+0x1c/0x20 > [] SyS_init_module+0x178/0x1c0 > [] entry_SYSCALL_64_fastpath+0x12/0x76 > ---[ end trace 31a9dd90d4f559f5 ]--- > > > Ref. > https://bugzilla.redhat.com/show_bug.cgi?id=1252167 > https://bugzilla.kernel.org/show_bug.cgi?id=102631 > You guys are really something. First of all, as is evident here, I am the original reporter, not Laura Abbott . -All- your comments including the final patch on this issue, are just plain wrong.[1] This patch only hides the actual problem with this particular device - the dual tuner combination driven by dvb_usb_af9015 & mxl5007t, broken by design since day one. Read the entire https://bugzilla.redhat.com/show_bug.cgi?id=1252167 and stop this nonsense. NACK "module: Fix locking in symbol_put_addr()" [1] http://www.gossamer-threads.com/lists/linux/kernel/2241154 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/