[linux-dvb] Problems with kernel oops when installing HVR-1800.

Mark Jenks mjenks1968 at gmail.com
Thu Jan 1 19:34:46 CET 2009

On Sun, Dec 28, 2008 at 8:59 PM, CityK <cityk at rogers.com> wrote:

> Mark Jenks wrote:
> > On Sun, Dec 28, 2008 at 5:45 PM, CityK <cityk at rogers.com
> > <mailto:cityk at rogers.com>> wrote:
> >
> >
> >     The HVR-1250 device itself supports analogue, but such support is not
> >     yet realized within the cx23885 driver.
> >
> >
> > Wow, actually it has an svideo in that I never paid attention to.
> > Maybe someday I'll be able to use both of the analog in for both the
> > 1250 and the 1800
> To be clear, just so everyone is on the same page, the device's analogue
> input facilities include both that from its analog TV tuner and from its
> (as mentioned above) A/V inputs

Well, I patched it, make clean, make, make install, and a reboot.

BUG: unable to handle kernel NULL pointer dereference at 00000168
IP: [<f0e2571c>] :cx23885:mpeg_open+0x41/0xc0
*pde = 00000000
Oops: 0000 [#1] SMP
Modules linked in: cpufreq_conservative cpufreq_userspace cpufreq_powersave
powernow_k8 xfs loop dm_mod cx25840 mt2131 s5h1409 cx23885
v4l2_compat_ioctl32 nvidia(P) snd_mpu401 cx2341x videobuf_dma_sg
videobuf_dvb dvb_core videobuf_core snd_usb_audio snd_usb_lib snd_cs4232
snd_opl3_lib v4l2_common videodev agpgart snd_hwdep lirc_mceusb2
snd_cs4231_lib snd_mpu401_uart snd_rawmidi snd_hda_intel snd_pcm parport_pc
ohci1394 snd_timer k8temp osst v4l1_compat snd_seq_device hwmon snd button
i2c_nforce2 lirc_dev parport ieee1394 st forcedeth sr_mod cdrom rtc_cmos
rtc_core btcx_risc tveeprom i2c_core snd_page_alloc soundcore rtc_lib sg
usbhid hid ff_memless ohci_hcd ehci_hcd usbcore sd_mod edd ext3 mbcache jbd
fan aic7xxx scsi_transport_spi sata_nv pata_amd libata scsi_mod dock thermal
processor thermal_sys

Pid: 2876, comm: X Tainted: P          ( #3)
EIP: 0060:[<f0e2571c>] EFLAGS: 00013287 CPU: 1
EIP is at mpeg_open+0x41/0xc0 [cx23885]
EAX: 00000000 EBX: ef1fd000 ECX: f0e308a8 EDX: ef3be000
ESI: 00000001 EDI: ef189980 EBP: efba1790 ESP: efe93e84
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process X (pid: 2876, ti=efe92000 task=ef1e5070 task.ti=efe92000)
Stack: efbf5a00 efbf5a04 ef189980 f0d775b8 00000000 ef3876c0 00000000
       c016bee5 ef189980 00000000 ef189980 efba1790 00000000 c016bdd9
       ef81ebc0 ef504c6c efe93f14 ef189980 efe93f14 00000003 c01684d8
Call Trace:
 [<f0d775b8>] v4l2_open+0x62/0x76 [videodev]
 [<c016bee5>] chrdev_open+0x10c/0x122
 [<c016bdd9>] chrdev_open+0x0/0x122
 [<c01683cd>] __dentry_open+0x10d/0x1fc
 [<c01684d8>] nameidata_to_filp+0x1c/0x2c
 [<c0172986>] do_filp_open+0x33d/0x63e
 [<f1aad8ce>] _nv004117rm+0x9/0x12 [nvidia]
 [<c01582f8>] handle_mm_fault+0x2b3/0x5dd
 [<f0dcf391>] __videobuf_mmap_free+0x3e/0x7d [videobuf_core]
 [<c017ab2d>] alloc_fd+0x57/0xd3
 [<c01681e8>] do_sys_open+0x3f/0xb8
 [<c01682a5>] sys_open+0x1e/0x23
 [<c01037ad>] sysenter_do_call+0x12/0x21
Code: 17 68 38 7a e2 f0 68 c8 0a 00 00 68 ee a2 e2 f0 e8 51 aa 2f cf 83 c4
0c e8 88 66 49 cf 8b 1d a0 fd e2 f0 eb 10 8b 83 c4 0e 00 00 <39> b0 68 01 00
00 74 1c 89 d3 8b 13 0f 18 02 90 81 fb a0 fd e2
EIP: [<f0e2571c>] mpeg_open+0x41/0xc0 [cx23885] SS:ESP 0068:efe93e84
---[ end trace 1bdce38cbcdc8781 ]---
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