Re: Problems with kernel oops when installing HVR-1800.

["Mark Jenks" <mjenks1968@xxxxxxxxx>]

On Thu, Jan 1, 2009 at 12:34 PM, Mark Jenks <mjenks1968@xxxxxxxxx> wrote:

On Sun, Dec 28, 2008 at 8:59 PM, CityK <cityk@xxxxxxxxxx> wrote:

Mark Jenks wrote:
> On Sun, Dec 28, 2008 at 5:45 PM, CityK <cityk@xxxxxxxxxx

> <mailto:cityk@xxxxxxxxxx>> 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          (2.6.27.10-default #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 efba1790
       c016bee5 ef189980 00000000 ef189980 efba1790 00000000 c016bdd9 c01683cd
       ef81ebc0 ef504c6c efe93f14 ef189980 efe93f14 00000003 c01684d8 ef189980
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 ]---
 

It's working!

I had to change cx23885-417.c to the same if statement in mpeg_open.

-Mark
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