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[Launchpad Bug Tracker <1457187@xxxxxxxxxxxxxxxxxx>]

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Hello,

starting with kernel >= 3.19 (vivid) my USB TV-Stick DVB-T "Terratec Cinergy DT XS Diversity" stopped working. 
=> BUG: unable to handle kernel NULL pointer dereference

This problem was not in kernel 3.16.x. (Utopic)

System: Kubuntu 14.04.2 64bit, kernel 3.19.x (lts-vivid,
3.19.0-18-generic #18~14.04.1-Ubuntu )

There is a bugreport available, where I have added my device-problem too
and a patch is available.

https://bugzilla.kernel.org/show_bug.cgi?id=92301

Patch:
http://permalink.gmane.org/gmane.linux.kernel.stable/135755

Please add this patch to kernels >= 3.19 (LTS HWE Vivid kernel Trusty
14.04, Vivid 15.04 and newer; linux-generic-lts-vivid, linux-image-
generic-lts-vivid, ... )

Thank you for your support!

Best regards, Bernhard

- log messsages:


Apr  9 18:01:03 stargazer kernel: [   70.017022] usb 3-2.4.1: new high-speed USB device number 4 using xhci_hcd
Apr  9 18:01:03 stargazer kernel: [   70.107491] usb 3-2.4.1: New USB device found, idVendor=0ccd, idProduct=005a
Apr  9 18:01:03 stargazer kernel: [   70.107494] usb 3-2.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr  9 18:01:03 stargazer kernel: [   70.107495] usb 3-2.4.1: Product: Cinergy DT XS
Apr  9 18:01:03 stargazer kernel: [   70.107497] usb 3-2.4.1: Manufacturer: TerraTec
Apr  9 18:01:03 stargazer kernel: [   70.107498] usb 3-2.4.1: SerialNumber: 070201001111
Apr  9 18:01:03 stargazer mtp-probe: checking bus 3, device 4: "/sys/devices/pci0000:00/0000:00:1c.0/0000:06:00.0/0000:07:09.0/0000:0b:00.0/usb3/3-2/3-2.4/3-2.4.1"
Apr  9 18:01:03 stargazer mtp-probe: bus: 3, device: 4 was not an MTP device
Apr  9 18:01:03 stargazer kernel: [   70.139371] dvb-usb: found a 'Terratec Cinergy DT XS Diversity' in cold state, will try to load a firmware
Apr  9 18:01:03 stargazer kernel: [   70.139617] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw'
Apr  9 18:01:03 stargazer kernel: [   70.543833] dib0700: firmware started successfully.
Apr  9 18:01:04 stargazer kernel: [   71.047012] dvb-usb: found a 'Terratec Cinergy DT XS Diversity' in warm state.
Apr  9 18:01:04 stargazer kernel: [   71.047309] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
Apr  9 18:01:04 stargazer kernel: [   71.047746] DVB: registering new adapter (Terratec Cinergy DT XS Diversity)
Apr  9 18:01:04 stargazer kernel: [   71.057441] BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
Apr  9 18:01:04 stargazer kernel: [   71.057450] IP: [<ffffffffc0ded141>] dib7000p_attach+0x11/0xa0 [dib7000p]
Apr  9 18:01:04 stargazer kernel: [   71.057457] PGD cd4be067 PUD cd4e4067 PMD 0
Apr  9 18:01:04 stargazer kernel: [   71.057463] Oops: 0002 [#1] SMP
Apr  9 18:01:04 stargazer kernel: [   71.057466] Modules linked in: dib7000p dvb_usb_dib0700(+) dib7000m dib0090 dib0070 dib3000mc dibx000_common dvb_usb dvb_core rc_core dm_crypt nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables snd_hda_codec_hdmi snd_usb_audio joydev snd_usbmidi_lib gpio_ich mxm_wmi hid_logitech_hidpp snd_hda_codec_via snd_hda_codec_generic nvidia(POE) snd_hda_intel kvm_intel snd_hda_controller snd_hda_codec kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi serio_raw i7core_edac edac_core snd_seq snd_seq_device snd_timer snd drm soundcore lpc_ich shpchp rfcomm bnep bluetooth wmi mac_hid binfmt_misc parport_pc ppdev coretemp lp parport pata_acpi hid_logitech_dj hid_generic usbhid hid psmouse firewire_ohci firewire_core r8169 ahci crc_itu_t pata_jmicron mii libahci
Apr  9 18:01:04 stargazer kernel: [   71.057531] CPU: 2 PID: 3496 Comm: systemd-udevd Tainted: P           OE  3.19.0-12-generic #12~14.04.1-Ubuntu
Apr  9 18:01:04 stargazer kernel: [   71.057533] Hardware name: System manufacturer System Product Name/P7P55D-E PRO, BIOS 1703    06/26/2012
Apr  9 18:01:04 stargazer kernel: [   71.057535] task: ffff880036275850 ti: ffff8800cd548000 task.ti: ffff8800cd548000
Apr  9 18:01:04 stargazer kernel: [   71.057537] RIP: 0010:[<ffffffffc0ded141>]  [<ffffffffc0ded141>] dib7000p_attach+0x11/0xa0 [dib7000p]
Apr  9 18:01:04 stargazer kernel: [   71.057541] RSP: 0018:ffff8800cd54ba68  EFLAGS: 00010202
Apr  9 18:01:04 stargazer kernel: [   71.057543] RAX: 0000000000000010 RBX: ffff8803e0aed278 RCX: 0000000000000001
Apr  9 18:01:04 stargazer kernel: [   71.057545] RDX: 0000000000000001 RSI: ffffffffc0df4758 RDI: 0000000000000010
Apr  9 18:01:04 stargazer kernel: [   71.057546] RBP: ffff8800cd54ba68 R08: ffffffff810f1470 R09: ffff88041fc57140
Apr  9 18:01:04 stargazer kernel: [   71.057548] R10: ffffea000f66a680 R11: ffffffff81088634 R12: 0000000000000000
Apr  9 18:01:04 stargazer kernel: [   71.057549] R13: 0000000000000010 R14: ffff8803e0aed278 R15: ffff8803e0aed398
Apr  9 18:01:04 stargazer kernel: [   71.057552] FS:  00007f688ee9d880(0000) GS:ffff88041fc40000(0000) knlGS:0000000000000000
Apr  9 18:01:04 stargazer kernel: [   71.057554] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Apr  9 18:01:04 stargazer kernel: [   71.057555] CR2: 0000000000000080 CR3: 00000000cd4e7000 CR4: 00000000000007e0
Apr  9 18:01:04 stargazer kernel: [   71.057557] Stack:
Apr  9 18:01:04 stargazer kernel: [   71.057558]  ffff8800cd54ba98 ffffffffc0e6105b ffff8803e0aed398 ffff8803e0aed278
Apr  9 18:01:04 stargazer kernel: [   71.057561]  ffff8803e0aed278 0000000000000000 ffff8800cd54bad8 ffffffffc0df88d8
Apr  9 18:01:04 stargazer kernel: [   71.057564]  ffff8803e0aec000 0000000000000000 ffff8803e0aed278 ffff8803e0aec000
Apr  9 18:01:04 stargazer kernel: [   71.057567] Call Trace:
Apr  9 18:01:04 stargazer kernel: [   71.057575]  [<ffffffffc0e6105b>] stk7700d_frontend_attach+0x3b/0x200 [dvb_usb_dib0700]
Apr  9 18:01:04 stargazer kernel: [   71.057580]  [<ffffffffc0df88d8>] dvb_usb_adapter_frontend_init+0xf8/0x1b0 [dvb_usb]
Apr  9 18:01:04 stargazer kernel: [   71.057583]  [<ffffffffc0df7acc>] dvb_usb_device_init+0x4fc/0x750 [dvb_usb]
Apr  9 18:01:04 stargazer kernel: [   71.057588]  [<ffffffffc0e5d33a>] dib0700_probe+0x6a/0x100 [dvb_usb_dib0700]
Apr  9 18:01:04 stargazer kernel: [   71.057594]  [<ffffffff817b11b6>] ? mutex_lock+0x16/0x37
Apr  9 18:01:04 stargazer kernel: [   71.057598]  [<ffffffff815add1b>] usb_probe_interface+0x1bb/0x300
Apr  9 18:01:04 stargazer kernel: [   71.057603]  [<ffffffff814f2d2d>] driver_probe_device+0x12d/0x3e0
Apr  9 18:01:04 stargazer kernel: [   71.057606]  [<ffffffff814f30bb>] __driver_attach+0x9b/0xa0
Apr  9 18:01:04 stargazer kernel: [   71.057609]  [<ffffffff814f3020>] ? __device_attach+0x40/0x40
Apr  9 18:01:04 stargazer kernel: [   71.057612]  [<ffffffff814f0c33>] bus_for_each_dev+0x63/0xa0
Apr  9 18:01:04 stargazer kernel: [   71.057615]  [<ffffffff814f270e>] driver_attach+0x1e/0x20
Apr  9 18:01:04 stargazer kernel: [   71.057618]  [<ffffffff814f2300>] bus_add_driver+0x180/0x240
Apr  9 18:01:04 stargazer kernel: [   71.057621]  [<ffffffff814f38a4>] driver_register+0x64/0xf0
Apr  9 18:01:04 stargazer kernel: [   71.057624]  [<ffffffff815ac4e2>] usb_register_driver+0x82/0x160
Apr  9 18:01:04 stargazer kernel: [   71.057628]  [<ffffffffc0e81000>] ? 0xffffffffc0e81000
Apr  9 18:01:04 stargazer kernel: [   71.057633]  [<ffffffffc0e8101e>] dib0700_driver_init+0x1e/0x1000 [dvb_usb_dib0700]
Apr  9 18:01:04 stargazer kernel: [   71.057637]  [<ffffffff81002144>] do_one_initcall+0xd4/0x210
Apr  9 18:01:04 stargazer kernel: [   71.057641]  [<ffffffff811cd549>] ? kmem_cache_alloc_trace+0x199/0x220
Apr  9 18:01:04 stargazer kernel: [   71.057645]  [<ffffffff810f639d>] ? load_module+0x162d/0x1ca0
Apr  9 18:01:04 stargazer kernel: [   71.057648]  [<ffffffff810f63d6>] load_module+0x1666/0x1ca0
Apr  9 18:01:04 stargazer kernel: [   71.057651]  [<ffffffff810f1c90>] ? store_uevent+0x40/0x40
Apr  9 18:01:04 stargazer kernel: [   71.057655]  [<ffffffff810f6b86>] SyS_finit_module+0x86/0xb0
Apr  9 18:01:04 stargazer kernel: [   71.057659]  [<ffffffff817b328d>] system_call_fastpath+0x16/0x1b
Apr  9 18:01:04 stargazer kernel: [   71.057660] Code: 48 8b 87 18 03 00 00 48 89 e5 48 05 68 16 00 00 5d c3 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 48 85 ff 48 89 f8 48 89 e5 74 7f <48> c7 47 70 80 ec de c0 48 c7 47 68 f0 dc de c0 48 c7 47 30 70
Apr  9 18:01:04 stargazer kernel: [   71.057688] RIP  [<ffffffffc0ded141>] dib7000p_attach+0x11/0xa0 [dib7000p]
Apr  9 18:01:04 stargazer kernel: [   71.057692]  RSP <ffff8800cd54ba68>
Apr  9 18:01:04 stargazer kernel: [   71.057693] CR2: 0000000000000080
Apr  9 18:01:04 stargazer kernel: [   71.057696] ---[ end trace 36adf9b87fe4bc99 ]---

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Triaged


** Tags: dib0700 dvb hwe kernel patch trusty vivid
-- 
[DVB] dib0700 DVB devices not working with kernels >= 3.19.x (vivid + trusty)
https://bugs.launchpad.net/bugs/1457187
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