[pvrusb2] oops

[Mark Brand]

Hi,

I'm running:
kernel 2.6.19.2
pvrusb2-mci-20070114

I think I triggered this oops by trying to run pvrui.sh.

Afterwards I tried to cat ctl_video_aspect/cur_val.

These processes are hung:

ps -Af  | grep cat
root     28307     1  0 16:33 ?        00:00:00 cat
ctl_audio_bitrate/cur_val
root     28317     1  0 16:34 ?        00:00:00 cat ctl_<NULL>/cur_val
root     28326 28271  0 16:37 ?        00:00:00 cat ctl_video_aspect/cur_val


Here is the oops:

Jan 18 16:33:14 pdq kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000000
Jan 18 16:33:14 pdq kernel:  printing eip:
Jan 18 16:33:14 pdq kernel: 00000000
Jan 18 16:33:14 pdq kernel: *pde = 00000000
Jan 18 16:33:14 pdq kernel: Oops: 0000 [#1]
Jan 18 16:33:14 pdq kernel: SMP
Jan 18 16:33:14 pdq kernel: Modules linked in: nfs lockd nfs_acl sunrpc
af_packet ipv6 vmnet(P) parport_pc parport vmmon(P) snd_pcm_oss
snd_mixer_oss snd_seq cpufreq_conservativ
e cpufreq_ondemand cpufreq_userspace cpufreq_powersave
speedstep_centrino freq_table button battery ac ext2 mbcache loop dm_mod
pl2303 usbhid ff_memless usbserial asix usbnet us
blp tuner saa7115 msp3400 pvrusb2 cx2341x videodev v4l1_compat
v4l2_common tveeprom nvidia(P) ipw3945 ieee80211 ohci1394
ieee80211_crypt intel_agp sdhci b44 mii ieee1394 ehci_hc
d mmc_core firmware_class agpgart uhci_hcd i2c_i801 i2c_core
snd_hda_intel snd_hda_codec snd_usb_audio snd_pcm snd_timer
snd_page_alloc snd_usb_lib usbcore snd_rawmidi snd_seq_d
evice snd_hwdep snd soundcore reiserfs sg edd sr_mod cdrom fan ata_piix
libata thermal processor sd_mod scsi_mod
Jan 18 16:33:14 pdq kernel: CPU:    1
Jan 18 16:33:14 pdq kernel: EIP:    0060:[<00000000>]    Tainted: P      VLI
Jan 18 16:33:14 pdq kernel: EFLAGS: 00010246   (2.6.19.2-default #11)
Jan 18 16:33:14 pdq kernel: EIP is at _stext+0x3feffc9c/0x14
Jan 18 16:33:14 pdq kernel: eax: c21abc68   ebx: c21abc68   ecx:
f8f25c5c   edx: c6a6bf38
Jan 18 16:33:14 pdq kernel: esi: c6a6bf38   edi: ffffffea   ebp:
0000000d   esp: c6a6bf08
Jan 18 16:33:14 pdq kernel: ds: 007b   es: 007b   ss: 0068
Jan 18 16:33:14 pdq kernel: Process cat (pid: 28305, ti=c6a6a000
task=e29a1550 task.ti=c6a6a000)
Jan 18 16:33:14 pdq kernel: Stack: f8f16a63 c21abc68 f79376c0 cba3c000
f8f22c46 00000000 00001000 00000000
Jan 18 16:33:14 pdq kernel:        00000000 000280d0 00000010 00000000
f3642080 cba3c000 f7d016c8 c035744c
Jan 18 16:33:14 pdq kernel:        f7d016c8 c022462c c6a6f780 dfca9f84
c019de74 00001000 08051000 00000002
Jan 18 16:33:14 pdq kernel: Call Trace:
Jan 18 16:33:14 pdq kernel:  [<f8f16a63>] pvr2_ctrl_get_value+0x2e/0x4b
[pvrusb2]
Jan 18 16:33:14 pdq kernel:  [<f8f22c46>] show_val_norm+0x33/0xa1 [pvrusb2]
Jan 18 16:33:14 pdq kernel:  [<c022462c>] class_device_attr_show+0x16/0x19
Jan 18 16:33:14 pdq kernel:  [<c019de74>] sysfs_read_file+0x7d/0x121
Jan 18 16:33:14 pdq kernel:  [<c019ddf7>] sysfs_read_file+0x0/0x121
Jan 18 16:33:14 pdq kernel:  [<c016790b>] vfs_read+0xa6/0x157
Jan 18 16:33:14 pdq kernel:  [<c0167d75>] sys_read+0x41/0x67
Jan 18 16:33:14 pdq kernel:  [<c0103d6d>] sysenter_past_esp+0x56/0x79
Jan 18 16:33:14 pdq kernel:  [<c02a007b>] skb_cow_data+0xc0/0x216
Jan 18 16:33:14 pdq kernel:  =======================
Jan 18 16:33:14 pdq kernel: Code:  Bad EIP value.
Jan 18 16:33:14 pdq kernel: EIP: [<00000000>] _stext+0x3feffc9c/0x14
SS:ESP 0068:c6a6bf08