On Thu, 2011-11-24 at 19:02 +0000, Stefan Macher wrote: > > Hi, > > I have setup a new vdr with yavdr 0.4 with one TT full-featured DVB-S > card (S2300) and one Mystique SaTiX-S2 Sky Xpress dual. As soon as I > pause the video I get endless reports like the one in the headline and > the vdr is dead. > > Because of the new SaTiX card I had to update the DVB drivers to the > latest media-tree. I tried the yavdr kernel 2.6.38-12, a vanilla 3.0.9 > kernel and I also tested the DVB driver from dvbsky.net on top of > vanilla 3.0.9. I always get the same result - working perfectly until > I press pause. > > In the log below schedule is called by play_video_cb (dvb-ttpci). Any > help is appreciated.
It appears the ttpci driver has an architectural problem. There are two obvious courses of action to fix the driver: 1. Rework the driver so that it uses workqueues instead of tasklets (tasklets are deprecated). Code executed by a workqueue worker thread is permitted to sleep. Code executed in a tasklet context is not permitted to sleep. or 2. Rework the driver to avoid all mutex locks, or other schedule()-ing calls, in all code paths possibly called in a tasklet context. Both options require a non-trivial amount of work and regression testing, but I estimate option #1 requires less effort. You have a 3rd option option: 3. Don't press "pause" Regards, Andy > /Stefan > > LOG: > > Nov 22 20:19:23 vdr4 kernel: [ 1881.295798] BUG: scheduling while atomic: > kworker/0:0/0/0x00000100 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295806] Modules linked in: > snd_hda_codec_hdmi snd_hda_codec_realtek speedstep_lib nfsd exportfs nfs > lockd fscache auth_rpcgss nfs_acl rc_dvbsky ds3000 lnbp21 sunrpc stv0299 > cx25840 ir_lirc_codec lirc_dev snd_hda_intel snd_hda_codec ir_mce_kbd_decoder > snd_hwdep ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder > ir_nec_decoder cx23885 rc_core snd_pcm snd_seq_midi snd_rawmidi > snd_seq_midi_event cx2341x videobuf_dvb v4l2_common snd_seq dvb_ttpci > dvb_core saa7146_vv snd_timer snd_seq_device snd mxm_wmi saa7146 videodev > soundcore videobuf_dma_sg videobuf_core v4l2_compat_ioctl32 ttpci_eeprom > psmouse snd_page_alloc serio_raw video btcx_risc tveeprom edac_core > edac_mce_amd k8temp shpchp i2c_nforce2 lp parport floppy firewire_ohci > firewire_core crc_itu_t forcedeth ahci libahci > Nov 22 20:19:23 vdr4 kernel: [ 1881.295863] CPU 1 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295864] Modules linked in: > snd_hda_codec_hdmi snd_hda_codec_realtek speedstep_lib nfsd exportfs nfs > lockd fscache auth_rpcgss nfs_acl rc_dvbsky ds3000 lnbp21 sunrpc stv0299 > cx25840 ir_lirc_codec lirc_dev snd_hda_intel snd_hda_codec ir_mce_kbd_decoder > snd_hwdep ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder > ir_nec_decoder cx23885 rc_core snd_pcm snd_seq_midi snd_rawmidi > snd_seq_midi_event cx2341x videobuf_dvb v4l2_common snd_seq dvb_ttpci > dvb_core saa7146_vv snd_timer snd_seq_device snd mxm_wmi saa7146 videodev > soundcore videobuf_dma_sg videobuf_core v4l2_compat_ioctl32 ttpci_eeprom > psmouse snd_page_alloc serio_raw video btcx_risc tveeprom edac_core > edac_mce_amd k8temp shpchp i2c_nforce2 lp parport floppy firewire_ohci > firewire_core crc_itu_t forcedeth ahci libahci > Nov 22 20:19:23 vdr4 kernel: [ 1881.295910] > Nov 22 20:19:23 vdr4 kernel: [ 1881.295913] Pid: 0, comm: kworker/0:0 Not > tainted 3.1.0-media+ #1 System manufacturer System Product Name/M3N78-EM > Nov 22 20:19:23 vdr4 kernel: [ 1881.295919] RIP: 0010:[<ffffffff8103b14b>] > [<ffffffff8103b14b>] native_safe_halt+0xb/0x10 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295928] RSP: 0018:ffff88007432fe88 > EFLAGS: 00000246 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295931] RAX: 0000000000000000 RBX: > ffffffff8101aa95 RCX: 0000000000000000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295934] RDX: 0000000000000000 RSI: > ffff88007432fec4 RDI: 0000000000000000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295936] RBP: ffff88007432fe88 R08: > 0000000000000000 R09: 0000000000000000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295939] R10: 0000000000000000 R11: > 0000000000000000 R12: ffff880077c91200 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295941] R13: 00ff880000000000 R14: > 0000000000000000 R15: ffff880071760058 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295945] FS: 00007fe326c31740(0000) > GS:ffff880077c80000(0000) knlGS:0000000000000000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295948] CS: 0010 DS: 0000 ES: 0000 CR0: > 000000008005003b > Nov 22 20:19:23 vdr4 kernel: [ 1881.295951] CR2: 00007fe2fc5efac4 CR3: > 0000000071d26000 CR4: 00000000000006e0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295953] DR0: 0000000000000000 DR1: > 0000000000000000 DR2: 0000000000000000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295956] DR3: 0000000000000000 DR6: > 00000000ffff0ff0 DR7: 0000000000000400 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295959] Process kworker/0:0 (pid: 0, > threadinfo ffff88007432e000, task ffff880074330000) > Nov 22 20:19:23 vdr4 kernel: [ 1881.295962] Stack: > Nov 22 20:19:23 vdr4 kernel: [ 1881.295964] ffff88007432fea8 > ffffffff8101b901 ffff88007432fec4 ffffffff81abccc0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295968] ffff88007432fed8 > ffffffff8101b9fd ffff88007432fec8 000000007432e000 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295973] ffff88007432e000 > ffffffff81abccc0 ffff88007432ff18 ffffffff81012276 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295977] Call Trace: > Nov 22 20:19:23 vdr4 kernel: [ 1881.295983] [<ffffffff8101b901>] > default_idle+0x41/0xe0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295987] [<ffffffff8101b9fd>] > amd_e400_idle+0x5d/0x120 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295991] [<ffffffff81012276>] > cpu_idle+0xd6/0x110 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295997] [<ffffffff815dd074>] > start_secondary+0x1e0/0x1e7 > Nov 22 20:19:23 vdr4 kernel: [ 1881.295999] Code: 55 48 89 e5 66 66 66 66 90 > fa c9 c3 0f 1f 40 00 55 48 89 e5 66 66 66 66 90 fb c9 c3 0f 1f 40 00 55 48 89 > e5 66 66 66 66 90 fb f4 <c9> c3 0f 1f 00 55 48 89 e5 66 66 66 66 90 f4 c9 c3 > 0f 1f 40 00 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296047] Call Trace: > Nov 22 20:19:23 vdr4 kernel: [ 1881.296050] [<ffffffff8101b901>] > default_idle+0x41/0xe0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296053] [<ffffffff8101b9fd>] > amd_e400_idle+0x5d/0x120 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296057] [<ffffffff81012276>] > cpu_idle+0xd6/0x110 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296061] [<ffffffff815dd074>] > start_secondary+0x1e0/0x1e7 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296064] bad: scheduling from the idle > thread! > Nov 22 20:19:23 vdr4 kernel: [ 1881.296068] Pid: 0, comm: kworker/0:0 Not > tainted 3.1.0-media+ #1 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296070] Call Trace: > Nov 22 20:19:23 vdr4 kernel: [ 1881.296072] <IRQ> [<ffffffff81051dfa>] > dequeue_task_idle+0x3a/0x50 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296080] [<ffffffff8104c993>] > dequeue_task+0x93/0xb0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296083] [<ffffffff8104c9d3>] > deactivate_task+0x23/0x30 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296087] [<ffffffff815e22d9>] > __schedule+0x4c9/0x8a0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296091] [<ffffffff815e29df>] > schedule+0x3f/0x60 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296102] [<ffffffffa017e3b5>] > play_video_cb+0x295/0x4f0 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296107] [<ffffffff81087030>] ? > wake_up_bit+0x40/0x40 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296111] [<ffffffff81059860>] ? > try_to_wake_up+0x250/0x2b0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296119] [<ffffffffa018562d>] > send_ipack+0xed/0x250 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296122] [<ffffffff810598d2>] ? > default_wake_function+0x12/0x20 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296130] [<ffffffffa0185815>] > write_ipack+0x85/0xd0 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296137] [<ffffffffa0185d6a>] > av7110_ipack_instant_repack+0x35a/0x890 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296144] [<ffffffffa017cb74>] > write_ts_to_decoder+0x74/0xc0 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296151] [<ffffffffa017feb9>] > av7110_write_to_decoder+0x99/0xf0 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296163] [<ffffffffa0155d8c>] > dvb_dmx_swfilter_packet+0x1fc/0x5b0 [dvb_core] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296170] [<ffffffffa01771bd>] ? > av7110_debiread+0x4d/0x160 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296175] [<ffffffff8103bed9>] ? > default_spin_lock_flags+0x9/0x10 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296182] [<ffffffffa01563aa>] > dvb_dmx_swfilter_packets+0x5a/0x80 [dvb_core] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296189] [<ffffffffa01828a9>] > debiirq+0x1d9/0x490 [dvb_ttpci] > Nov 22 20:19:23 vdr4 kernel: [ 1881.296193] [<ffffffff8106ab73>] > tasklet_action+0x73/0x120 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296197] [<ffffffff8106b1a8>] > __do_softirq+0xa8/0x1c0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296201] [<ffffffff81033dd6>] ? > ack_apic_level+0x76/0x1f0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296206] [<ffffffff815ef02c>] > call_softirq+0x1c/0x30 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296210] [<ffffffff810152b5>] > do_softirq+0x65/0xa0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296213] [<ffffffff8106b53e>] > irq_exit+0x8e/0xb0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296217] [<ffffffff815ef8e6>] > do_IRQ+0x66/0xe0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296222] [<ffffffff815e502e>] > common_interrupt+0x6e/0x6e > Nov 22 20:19:23 vdr4 kernel: [ 1881.296224] <EOI> [<ffffffff8101aa95>] ? > native_sched_clock+0x15/0x70 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296230] [<ffffffff8103b14b>] ? > native_safe_halt+0xb/0x10 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296233] [<ffffffff8101b901>] > default_idle+0x41/0xe0 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296237] [<ffffffff8101b9fd>] > amd_e400_idle+0x5d/0x120 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296240] [<ffffffff81012276>] > cpu_idle+0xd6/0x110 > Nov 22 20:19:23 vdr4 kernel: [ 1881.296244] [<ffffffff815dd074>] > start_secondary+0x1e0/0x1e7 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More 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