From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:39764 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751732AbaLSJK2 (ORCPT ); Fri, 19 Dec 2014 04:10:28 -0500 Received: from dyn3-82-128-190-202.psoas.suomi.net ([82.128.190.202] helo=localhost.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from ) id 1Y1tZq-0005JV-Jj for linux-media@vger.kernel.org; Fri, 19 Dec 2014 11:10:26 +0200 Message-ID: <5493EB82.5090004@iki.fi> Date: Fri, 19 Dec 2014 11:10:26 +0200 From: Antti Palosaari MIME-Version: 1.0 To: LMML Subject: cx23885 streaming lockdep error (VB2 related?) Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: I see thank kind of error when I start streaming cx23885: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 3 PID: 27959 Comm: dvbv5-scan Tainted: G C O 3.18.0-rc4+ #12 Hardware name: System manufacturer System Product Name/M5A78L-M/USB3, BIOS 2001 09/11/2014 0000000000000000 00000000d70b2b44 ffff880162013928 ffffffff817a6f52 0000000000000000 ffff88018d3cc1d0 ffff880162013938 ffffffff817a4802 ffff880162013a38 ffffffff810e765a ffffffff8102001a ffff88018d3cc1d0 Call Trace: [] dump_stack+0x4e/0x68 [] register_lock_class.part.41+0x38/0x3c [] __lock_acquire+0x156a/0x1f50 [] ? native_sched_clock+0x2a/0xa0 [] lock_acquire+0xc9/0x170 [] ? cx23885_buf_queue+0x6f/0x150 [cx23885] [] _raw_spin_lock_irqsave+0x57/0xa0 [] ? cx23885_buf_queue+0x6f/0x150 [cx23885] [] ? cx23885_risc_databuffer+0xe9/0x160 [cx23885] [] cx23885_buf_queue+0x6f/0x150 [cx23885] [] buffer_queue+0x1c/0x20 [cx23885] [] __enqueue_in_driver+0x84/0x90 [videobuf2_core] [] vb2_start_streaming+0x40/0x190 [videobuf2_core] [] ? __fill_v4l2_buffer+0x119/0x1a0 [videobuf2_core] [] vb2_internal_streamon+0x115/0x150 [videobuf2_core] [] __vb2_init_fileio+0x361/0x3e0 [videobuf2_core] [] ? vb2_dvb_start_feed+0xc0/0xc0 [videobuf2_dvb] [] vb2_thread_start+0xae/0x240 [videobuf2_core] [] ? dmx_section_feed_start_filtering+0x2f/0x190 [dvb_core] [] vb2_dvb_start_feed+0x90/0xc0 [videobuf2_dvb] [] dmx_section_feed_start_filtering+0xe2/0x190 [dvb_core] [] dvb_dmxdev_filter_start+0x20e/0x3e0 [dvb_core] [] dvb_demux_do_ioctl+0x4f0/0x650 [dvb_core] [] dvb_usercopy+0x124/0x1a0 [dvb_core] [] ? avc_has_perm+0x126/0x1f0 [] ? dvb_dmxdev_add_pid+0xb0/0xb0 [dvb_core] [] dvb_demux_ioctl+0x15/0x20 [dvb_core] [] do_vfs_ioctl+0x2f0/0x520 [] ? retint_swapgs+0x13/0x1b [] SyS_ioctl+0x81/0xa0 [] system_call_fastpath+0x12/0x17 any idea why? regards Antti -- http://palosaari.fi/