Hello, I am running a Debian 2.6.32-Kernel (which by the way contains a lot of unresolved symbols in many dvb modules). As this kernel does not support my WinTV Nova-T USB-Stick, I downloaded the latest sources via the web interface from linuxtv.org, compiled the sources and installed the resulting modules. When I now connect the USB stick, the DVB modules are loaded correctly, but when I start an application to watch TV, I get a Kernel Oops. These lines from my kern.log show the kernel actions when connecting the device: Sep 8 19:51:16 superstar kernel: [ 3480.084012] usb 2-5: new high speed USB device using ehci_hcd and address 3 Sep 8 19:51:16 superstar kernel: [ 3480.217755] usb 2-5: New USB device found, idVendor=2040, idProduct=7050 Sep 8 19:51:16 superstar kernel: [ 3480.217758] usb 2-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Sep 8 19:51:16 superstar kernel: [ 3480.217760] usb 2-5: Product: Nova-T Stick Sep 8 19:51:16 superstar kernel: [ 3480.217761] usb 2-5: Manufacturer: Hauppauge Sep 8 19:51:16 superstar kernel: [ 3480.217762] usb 2-5: SerialNumber: 0000000000 Sep 8 19:51:16 superstar kernel: [ 3480.217849] usb 2-5: configuration #1 chosen from 1 choice Sep 8 19:51:16 superstar kernel: [ 3480.332785] dib0700: loaded with support for 14 different device-types Sep 8 19:51:16 superstar kernel: [ 3480.333846] dvb-usb: found a 'Hauppauge Nova-T Stick' in cold state, will try to load a firmware Sep 8 19:51:16 superstar kernel: [ 3480.333851] usb 2-5: firmware: requesting dvb-usb-dib0700-1.20.fw Sep 8 19:51:16 superstar kernel: [ 3480.439083] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw' Sep 8 19:51:17 superstar kernel: [ 3480.640502] dib0700: firmware started successfully. Sep 8 19:51:17 superstar kernel: [ 3481.144141] dvb-usb: found a 'Hauppauge Nova-T Stick' in warm state. Sep 8 19:51:17 superstar kernel: [ 3481.144540] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. Sep 8 19:51:17 superstar kernel: [ 3481.144639] DVB: registering new adapter (Hauppauge Nova-T Stick) Sep 8 19:51:17 superstar kernel: [ 3481.480505] DVB: registering adapter 0 frontend 0 (DiBcom 7000MA/MB/PA/PB/MC)... Sep 8 19:51:17 superstar kernel: [ 3481.498377] MT2060: successfully identified (IF1 = 1218) Sep 8 19:51:18 superstar kernel: [ 3481.975455] input: IR-receiver inside an USB DVB receiver as /devices/pci0000:00/0000:00:02.1/usb2/2-5/input/input6 Sep 8 19:51:18 superstar kernel: [ 3481.975500] dvb-usb: schedule remote query interval to 50 msecs. Sep 8 19:51:18 superstar kernel: [ 3481.975503] dvb-usb: Hauppauge Nova-T Stick successfully initialized and connected. Sep 8 19:51:18 superstar kernel: [ 3481.975777] usbcore: registered new interface driver dvb_usb_dib0700 These lines from my kern.log show the Oops event: Sep 8 19:51:28 superstar kernel: [ 3492.321914] BUG: unable to handle kernel NULL pointer dereference at 0000000000000012 Sep 8 19:51:28 superstar kernel: [ 3492.321920] IP: [<ffffffffa015e3db>] i2c_transfer+0x1c/0xc0 [i2c_core] Sep 8 19:51:28 superstar kernel: [ 3492.321928] PGD 1b8e69067 PUD 1b8e6a067 PMD 0 Sep 8 19:51:28 superstar kernel: [ 3492.321932] Oops: 0000 [#1] SMP Sep 8 19:51:28 superstar kernel: [ 3492.321934] last sysfs file: /sys/devices/pci0000:00/0000:00:02.1/usb2/2-5/input/input6/capabilities/sw Sep 8 19:51:28 superstar kernel: [ 3492.321936] CPU 0 Sep 8 19:51:28 superstar kernel: [ 3492.321938] Modules linked in: mt2060 dvb_usb_dib0700 dib7000p dib0090 dib7000m dib0070 dvb_usb dib8000 dvb_core dib30 00mc dibx000_common fglrx(P) binfmt_misc rfcomm l2cap crc16 bluetooth rfkill vboxnetadp vboxnetflt vboxdrv battery ppdev lp ext3 jbd mbcache xfs exportfs r eiserfs hwmon_vid eeprom firewire_sbp2 firewire_core crc_itu_t loop snd_hda_codec_atihdmi parport_pc parport psmouse evdev serio_raw snd_emu10k1_synth snd_ emux_synth snd_seq_virmidi snd_seq_midi_emul snd_hda_intel snd_hda_codec snd_emu10k1 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_seq_midi snd_pcm snd_rawmidi snd_util_mem asus_atk0110 snd_seq_midi_event snd_hwdep snd_seq snd_timer snd_seq_device emu10k1_gp pcspkr gameport snd snd_page_alloc soundcor e k8temp edac_core edac_mce_amd button processor i2c_nforce2 i2c_core jfs dm_mirror dm_region_hash dm_log dm_snapshot dm_mod sg sr_mod cdrom sd_mod crc_t10 dif ata_generic floppy fan pata_amd sata_nv ehci_hcd ohci_hcd libata thermal forcedeth thermal_sys scsi_mod usbcore nls_base [last unloaded: scsi_wait_scan ] Sep 8 19:51:28 superstar kernel: [ 3492.321984] Pid: 26841, comm: kaffeine Tainted: P 2.6.32-bpo.5-amd64 #1 System Product Name Sep 8 19:51:28 superstar kernel: [ 3492.321986] RIP: 0010: [<ffffffffa015e3db>] [<ffffffffa015e3db>] i2c_transfer+0x1c/0xc0 [i2c_core] Sep 8 19:51:28 superstar kernel: [ 3492.321990] RSP: 0018:ffff8801b95d9ba8 EFLAGS: 00010292 Sep 8 19:51:28 superstar kernel: [ 3492.321992] RAX: ffff8801b95d9c08 RBX: 0000000000000002 RCX: 0000000000000000 Sep 8 19:51:28 superstar kernel: [ 3492.321994] RDX: 0000000000000002 RSI: ffff8801b95d9be8 RDI: 0000000000000002 Sep 8 19:51:28 superstar kernel: [ 3492.321995] RBP: 00000000ffffffa1 R08: 000000000e008d80 R09: ffff880037803300 Sep 8 19:51:28 superstar kernel: [ 3492.321997] R10: ffff880037803360 R11: 0000000000000002 R12: ffff8802115a6800 Sep 8 19:51:28 superstar kernel: [ 3492.321999] R13: 0000000000000001 R14: 0000000000000002 R15: ffff8801b95d9be8 Sep 8 19:51:28 superstar kernel: [ 3492.322001] FS: 00007f2765d656f0(0000) GS:ffff880008c00000(0000) knlGS:0000000000000000 Sep 8 19:51:28 superstar kernel: [ 3492.322003] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 8 19:51:28 superstar kernel: [ 3492.322004] CR2: 0000000000000012 CR3: 00000001b8e68000 CR4: 00000000000006f0 Sep 8 19:51:28 superstar kernel: [ 3492.322006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 8 19:51:28 superstar kernel: [ 3492.322008] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 8 19:51:28 superstar kernel: [ 3492.322010] Process kaffeine (pid: 26841, threadinfo ffff8801b95d8000, task ffff88022305b170) Sep 8 19:51:28 superstar kernel: [ 3492.322011] Stack: Sep 8 19:51:28 superstar kernel: [ 3492.322012] ffff8801b8c09e18 00000000000000eb ffffc90013b0c000 ffff8802115a6800 Sep 8 19:51:28 superstar kernel: [ 3492.322015] <0> 0000000000000001 ffffc90012e51000 ffff8802115650c8 ffffffffa0271109 Sep 8 19:51:28 superstar kernel: [ 3492.322017] <0> 0000000200000010 ffff8801b95d9c18 0000000200010010 ffff8801b95d9c08 Sep 8 19:51:28 superstar kernel: [ 3492.322020] Call Trace: Sep 8 19:51:28 superstar kernel: [ 3492.322024] [<ffffffffa0271109>] ? dib7000p_read_word+0x6e/0xbe [dib7000p] Sep 8 19:51:28 superstar kernel: [ 3492.322027] [<ffffffffa01fd05e>] ? usb_urb_submit+0x3f/0x81 [dvb_usb] Sep 8 19:51:28 superstar kernel: [ 3492.322030] [<ffffffffa0271cdb>] ? dib7000p_pid_filter_ctrl+0x1e/0x74 [dib7000p] Sep 8 19:51:28 superstar kernel: [ 3492.322033] [<ffffffffa01fc354>] ? dvb_usb_ctrl_feed+0x16b/0x1ca [dvb_usb] Sep 8 19:51:28 superstar kernel: [ 3492.322038] [<ffffffffa0393610>] ? dmx_ts_feed_start_filtering+0x72/0xc6 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322041] [<ffffffffa039099e>] ? dvb_dmxdev_start_feed+0xbe/0xe6 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322045] [<ffffffffa0391ae1>] ? dvb_dmxdev_filter_start+0x2a9/0x315 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322049] [<ffffffffa0391dcf>] ? dvb_dmxdev_add_pid+0x50/0xf6 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322052] [<ffffffffa03920e6>] ? dvb_demux_do_ioctl+0x271/0x4b7 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322055] [<ffffffffa0390332>] ? dvb_usercopy+0xb4/0x128 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322059] [<ffffffffa0391e75>] ? dvb_demux_do_ioctl+0x0/0x4b7 [dvb_core] Sep 8 19:51:28 superstar kernel: [ 3492.322063] [<ffffffff810f6e63>] ? do_filp_open+0x4e4/0x94b Sep 8 19:51:28 superstar kernel: [ 3492.322066] [<ffffffff810f8b83>] ? vfs_ioctl+0x56/0x6c Sep 8 19:51:28 superstar kernel: [ 3492.322068] [<ffffffff810f909c>] ? do_vfs_ioctl+0x48d/0x4cb Sep 8 19:51:28 superstar kernel: [ 3492.322072] [<ffffffff810e3e9d>] ? virt_to_head_page+0x9/0x2a Sep 8 19:51:28 superstar kernel: [ 3492.322074] [<ffffffff810f912b>] ? sys_ioctl+0x51/0x70 Sep 8 19:51:28 superstar kernel: [ 3492.322078] [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b Sep 8 19:51:28 superstar kernel: [ 3492.322079] Code: c2 22 e1 15 a0 e8 0b d5 0b e1 48 83 c4 18 c3 41 57 49 89 f7 41 56 41 89 d6 41 55 41 54 55 bd a1 ff ff ff 53 48 89 fb 48 83 ec 08 <48> 8b 47 10 48 83 38 00 0f 84 87 00 00 00 65 48 8b 04 25 c8 cb Sep 8 19:51:28 superstar kernel: [ 3492.322098] RIP [<ffffffffa015e3db>] i2c_transfer+0x1c/0xc0 [i2c_core] Sep 8 19:51:28 superstar kernel: [ 3492.322102] RSP <ffff8801b95d9ba8> Sep 8 19:51:28 superstar kernel: [ 3492.322103] CR2: 0000000000000012 Sep 8 19:51:28 superstar kernel: [ 3492.322105] ---[ end trace 106578cacf144da6 ]--- What can I do to solve the problem? Regards Christoph -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
