Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752901AbbHUNxl (ORCPT ); Fri, 21 Aug 2015 09:53:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40752 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752174AbbHUNxk (ORCPT ); Fri, 21 Aug 2015 09:53:40 -0400 Subject: Re: WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90() To: poma , Linux Kernel list , Peter Zijlstra , Rusty Russell References: <55C916F0.8010303@gmail.com> <55D6FBB0.5000709@gmail.com> Cc: linux-media From: Laura Abbott Message-ID: <55D72D60.2040500@redhat.com> Date: Fri, 21 Aug 2015 06:53:36 -0700 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: <55D6FBB0.5000709@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3812 Lines: 79 On 08/21/2015 03:21 AM, poma wrote: > 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 > > Sorry, I've been delayed with conferences and have been avoiding e-mails and bugzilla. I missed sending out the Tested-by tag. You are welcome to drop the reported-by if you don't think it is appropriate. Laura -- 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/