[linux-dvb] Re: Pinnacle PCTV HD Pro Stick

Chris Lawrence lordsutch at gmail.com
Sun Nov 26 21:58:14 CET 2006


After the successful modprobe em2880-dvb, a channel scan attempt leads
to a kernel oops:

$ scan -n -o zap -p
/usr/share/doc/dvb-utils/examples/scan/atsc/us-ATSC-center-frequencies-8VSB
>| ~/.xine/channels.conf

[ 5222.938000] BUG: unable to handle kernel NULL pointer dereference
at virtual address 00000000
[ 5222.938000]  printing eip:
[ 5222.938000] 00000000
[ 5222.938000] *pde = 00000000
[ 5222.938000] Oops: 0000 [#1]
[ 5222.938000] Modules linked in: mt2060 mt352 zl10353 em2880_dvb
lgdt330x dvb_core xc3028_tuner tvp5150 tuner em28xx videodev
compat_ioctl32 ir_common v4l1_compat v4l2_common tveeprom binfmt_misc
i915 drm rfcomm l2cap michael_mic arc4 ieee80211_crypt_tkip aes
ieee80211_crypt_ccmp ipv6 capability commoncap button ac battery
af_packet nls_iso8859_1 nls_cp437 vfat fat cpufreq_ondemand
cpufreq_conservative speedstep_centrino freq_table ide_generic pcmcia
snd_intel8x0m snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss
snd_mixer_oss snd_pcm snd_timer ipw2200 i2c_i801 hci_usb sdhci
mmc_core snd soundcore yenta_socket rsrc_nonstatic pcmcia_core
ieee80211 ieee80211_crypt i2c_core bluetooth intel_agp agpgart eth1394
snd_page_alloc evdev firmware_class psmouse serio_raw pcspkr rtc jfs
ide_cd cdrom ide_disk uhci_hcd ehci_hcd usbcore ohci1394 ieee1394 piix
generic ide_core 8139too 8139cp mii thermal processor fan unix
[ 5222.938000] CPU:    0
[ 5222.938000] EIP:    0060:[<00000000>]    Not tainted VLI
[ 5222.938000] EFLAGS: 00010246   (2.6.18.3 #1)
[ 5222.938000] EIP is at _stext+0x3feffde0/0x3c
[ 5222.938000] eax: d2db0008   ebx: c7e2c000   ecx: 00000006   edx: cce6a400
[ 5222.938000] esi: 00000002   edi: d1241f20   ebp: dc87b000   esp: d1241dd8
[ 5222.938000] ds: 007b   es: 007b   ss: 0068
[ 5222.938000] Process kdvb-fe-0 (pid: 25211, ti=d1240000
task=c17f6c30 task.ti=d1240000)
[ 5222.938000] Stack: e08b372d d2db0008 dc87b000 00000002 d1241f20
dc87b000 3d2d73ab 00003e2e
[ 5222.938000]        dc87b000 00000002 e07bd9ba 00000006 c7e2c000
00000002 00000034 bf50acc0
[ 5222.938000]        dc87b000 d6987b40 dc87b000 4004564c d1241f20
dc87b000 e08c6b69 dc87b000
[ 5222.938000] Call Trace:
[ 5222.938000] Inexact backtrace:
[ 5222.938000]  [<e08b372d>] em28xx_gpio_write+0x36e/0x3fb [em28xx]
[ 5222.938000]  [<e07bd9ba>] xc3028_set_mode+0x3fd/0x407 [xc3028_tuner]
[ 5222.938000]  [<e08c6b69>] tuner_command+0xaa1/0x1230 [tuner]
[ 5222.938000]  [<c025ca79>] __mutex_lock_slowpath+0x19e/0x1a6
[ 5222.938000]  [<e044a4b1>] i2c_clients_command+0x77/0xc6 [i2c_core]
[ 5222.938000]  [<e07a0a32>] lgdt3303_tuner_set_params+0x42/0x95 [em2880_dvb]
[ 5222.938000]  [<e07f3719>] i2c_write_demod_bytes+0x47/0x9f [lgdt330x]
[ 5222.938000]  [<e07f396a>] lgdt330x_set_parameters+0x17a/0x1a9 [lgdt330x]
[ 5222.938000]  [<e08da606>]
dvb_frontend_swzigzag_autotune+0x197/0x1be [dvb_core]
[ 5222.938000]  [<e08dae08>] dvb_frontend_swzigzag+0x1b0/0x211 [dvb_core]
[ 5222.938000]  [<c011dfab>] process_timeout+0x0/0x9
[ 5222.938000]  [<e08dbb37>] dvb_frontend_thread+0x262/0x2e5 [dvb_core]
[ 5222.938000]  [<c01268d4>] autoremove_wake_function+0x0/0x4b
[ 5222.938000]  [<e08db8d5>] dvb_frontend_thread+0x0/0x2e5 [dvb_core]
[ 5222.938000]  [<c0101005>] kernel_thread_helper+0x5/0xb
[ 5222.938000] Code:  Bad EIP value.
[ 5222.938000] EIP: [<00000000>] _stext+0x3feffde0/0x3c SS:ESP 0068:d1241dd8



Chris
-- 
Chris Lawrence - http://blog.lordsutch.com/



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