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Description of problem: Running: # w_scan -c CZ -f t -X with connected dvb-usb: Pinnacle PCTV 340e HD Pro USB Stick /var/log/messages output for the device: Dec 1 20:29:51 localhost kernel: [ 3957.888834] usb 2-1.4: new high-speed USB device number 5 using ehci-pci Dec 1 20:29:51 localhost kernel: [ 3957.974723] usb 2-1.4: New USB device found, idVendor=2304, idProduct=023d Dec 1 20:29:51 localhost kernel: [ 3957.974732] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Dec 1 20:29:51 localhost kernel: [ 3957.974738] usb 2-1.4: Product: PCTV 340e Dec 1 20:29:51 localhost kernel: [ 3957.974764] usb 2-1.4: Manufacturer: YUANRD Dec 1 20:29:51 localhost kernel: [ 3957.974770] usb 2-1.4: SerialNumber: 09011171C0 Dec 1 20:29:51 localhost mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" Dec 1 20:29:51 localhost mtp-probe: bus: 2, device: 5 was not an MTP device Dec 1 20:29:51 localhost kernel: [ 3958.262208] dvb-usb: found a 'Pinnacle PCTV 340e HD Pro USB Stick' in cold state, will try to load a firmware Dec 1 20:29:51 localhost kernel: [ 3958.278586] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw' Dec 1 20:29:51 localhost kernel: [ 3958.480799] dib0700: firmware started successfully. Dec 1 20:29:52 localhost kernel: [ 3958.981961] dvb-usb: found a 'Pinnacle PCTV 340e HD Pro USB Stick' in warm state. Dec 1 20:29:52 localhost kernel: [ 3958.982977] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. Dec 1 20:29:52 localhost kernel: [ 3958.983063] DVB: registering new adapter (Pinnacle PCTV 340e HD Pro USB Stick) Dec 1 20:29:53 localhost kernel: [ 3959.800191] usb 2-1.4: DVB: registering adapter 0 frontend 0 (DiBcom 7000PC)... Dec 1 20:29:53 localhost kernel: [ 3959.907412] xc4000 8-0061: creating new instance Dec 1 20:29:53 localhost kernel: [ 3959.912768] xc4000: Successfully identified at address 0x61 Dec 1 20:29:53 localhost kernel: [ 3959.912774] xc4000: Firmware has not been loaded previously Dec 1 20:29:53 localhost kernel: [ 3959.912845] Error: firmware dvb-fe-xc4000-1.4.fw not found. Dec 1 20:29:53 localhost kernel: [ 3959.912853] xc4000 8-0061: destroying instance Dec 1 20:29:53 localhost kernel: [ 3959.959693] Registered IR keymap rc-dib0700-rc5 Dec 1 20:29:53 localhost kernel: [ 3959.960212] input: IR-receiver inside an USB DVB receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/rc/rc0/input17 Dec 1 20:29:53 localhost kernel: [ 3959.961370] rc0: IR-receiver inside an USB DVB receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/rc/rc0 Dec 1 20:29:53 localhost kernel: [ 3959.961513] dvb-usb: schedule remote query interval to 50 msecs. Dec 1 20:29:53 localhost kernel: [ 3959.961519] dvb-usb: Pinnacle PCTV 340e HD Pro USB Stick successfully initialized and connected. Dec 1 20:29:53 localhost kernel: [ 3959.962178] usbcore: registered new interface driver dvb_usb_dib0700 Additional info: reporter: libreport-2.1.9 BUG: unable to handle kernel NULL pointer dereference at 0000000000000080 IP: [<ffffffff81647395>] mutex_lock+0x15/0x2f PGD 0 Oops: 0002 [#1] SMP Modules linked in: rc_dib0700_rc5 xc4000 dvb_usb_dib0700 dib8000 dib7000m dib0090 dib0070 dib7000p dib3000mc dibx000_common dvb_usb dvb_core rc_core tun fuse nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE bnep bluetooth ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw arc4 ath9k ath9k_common ath9k_hw x86_pkg_temp_thermal coretemp uvcvideo ath videobuf2_vmalloc videobuf2_memops videobuf2_core kvm_intel kvm tg3 snd_hda_codec_hdmi videodev snd_hda_codec_realtek media mac80211 snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device acer_wmi sparse_keymap snd_pcm cfg80211 snd_page_alloc snd_timer snd rfkill microcode soundcore iTCO_wdt iTCO_vendor_support lpc_ich mfd_core sdhci_pci sdhci mmc_core ptp pps_core shpchp joydev serio_raw i2c_i801 mei_me mperf mei wmi xfs libcrc32c dm_crypt crc32_pclmul crc32c_intel ghash_clmulni_intel i915 i2c_algo_bit drm_kms_helper drm i2c_core video CPU: 0 PID: 5111 Comm: kdvb-ad-0-fe-0 Not tainted 3.11.9-300.fc20.x86_64 #1 Hardware name: Acer AO756/Mimic , BIOS V1.09 10/30/2012 task: ffff88028a418000 ti: ffff880237afc000 task.ti: ffff880237afc000 RIP: 0010:[<ffffffff81647395>] [<ffffffff81647395>] mutex_lock+0x15/0x2f RSP: 0018:ffff880237afd970 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000080 RCX: ffff880237afdfd8 RDX: 0000000000000000 RSI: 0000000082000191 RDI: 0000000000000080 RBP: ffff880237afd978 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8802aaf04000 R13: 0000000000000003 R14: 0000000000000080 R15: 00000000007a1200 FS: 0000000000000000(0000) GS:ffff8802cf200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000080 CR3: 0000000001c0c000 CR4: 00000000000407f0 Stack: 0000000000000000 ffff880237afd9b0 ffffffffa08307d9 ffff8802aaf04000 ffff8802aaf04000 ffff8802aaf04000 0000000000000002 000000001cbabc80 ffff880237afda18 ffffffffa07d0499 0000000000000020 ffff8802c04389c0 Call Trace: [<ffffffffa08307d9>] xc4000_set_params+0x49/0x400 [xc4000] [<ffffffffa07d0499>] dib7000p_set_frontend+0x69/0x1010 [dib7000p] [<ffffffff810115ce>] ? __switch_to+0x13e/0x4b0 [<ffffffffa07aa0e4>] dvb_frontend_swzigzag_autotune+0x154/0x350 [dvb_core] [<ffffffff81072e5b>] ? lock_timer_base.isra.35+0x2b/0x50 [<ffffffffa07aacea>] dvb_frontend_swzigzag+0x2da/0x380 [dvb_core] [<ffffffff810115ce>] ? __switch_to+0x13e/0x4b0 [<ffffffff81072e5b>] ? lock_timer_base.isra.35+0x2b/0x50 [<ffffffff81073c0f>] ? try_to_del_timer_sync+0x4f/0x70 [<ffffffff81073c82>] ? del_timer_sync+0x52/0x60 [<ffffffff81646e3b>] ? schedule_timeout+0x17b/0x2c0 [<ffffffff81072af0>] ? __internal_add_timer+0x130/0x130 [<ffffffffa07ab8f9>] dvb_frontend_thread+0x4c9/0x7b0 [dvb_core] [<ffffffff81089420>] ? wake_up_atomic_t+0x30/0x30 [<ffffffffa07ab430>] ? dvb_frontend_should_wakeup.isra.2+0x90/0x90 [dvb_core] [<ffffffff81088660>] kthread+0xc0/0xd0 [<ffffffff810885a0>] ? insert_kthread_work+0x40/0x40 [<ffffffff816532ec>] ret_from_fork+0x7c/0xb0 [<ffffffff810885a0>] ? insert_kthread_work+0x40/0x40 Code: ff 07 7f 05 e8 0d 0a 00 00 5d c3 0f 1f 00 83 ea 01 89 50 10 eb d9 66 66 66 66 90 55 48 89 e5 53 48 89 fb e8 2e 1e 00 00 48 89 df <f0> ff 0f 79 05 e8 21 0a 00 00 65 48 8b 04 25 80 c7 00 00 48 89 RIP [<ffffffff81647395>] mutex_lock+0x15/0x2f RSP <ffff880237afd970> CR2: 0000000000000080 Potential duplicate: bug 986714
Created attachment 832252 [details] File: dmesg
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 20 kernel bugs. Fedora 20 has now been rebased to 3.13.4-200.fc20. Please test this kernel update and let us know if you issue has been resolved or if it is still present with the newer kernel. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug has been in a needinfo state for several weeks and is being closed with insufficient data due to inactivity. If this is still an issue with Fedora 20, please feel free to reopen the bug and provide the additional information requested.