[pvrusb2] oops

[Mark Brand]

It looks like the problem is reproducible, at least for me. I just
rebooted, and ran pvrus.sh before doing anything else, when this happened:


Jan 18 16:54:57 pdq kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000000
Jan 18 16:54:57 pdq kernel:  printing eip:
Jan 18 16:54:57 pdq kernel: 00000000
Jan 18 16:54:57 pdq kernel: *pde = 00000000
Jan 18 16:54:57 pdq kernel: Oops: 0000 [#1]
Jan 18 16:54:57 pdq kernel: SMP
Jan 18 16:54:57 pdq kernel: Modules linked in: nfs lockd nfs_acl sunrpc
af_packet ipv6 microcode vmnet(P) parpor
t_pc parport vmmon(P) snd_pcm_oss snd_mixer_oss snd_seq
cpufreq_conservative cpufreq_ondemand cpufreq_userspace
cpufreq_powersave speedstep_centrino freq_table button battery ac ext2
mbcache loop dm_mod pl2303 usbhid ff_meml
ess usbserial asix usbnet usblp tuner saa7115 msp3400 pvrusb2 cx2341x
videodev v4l1_compat v4l2_common tveeprom
nvidia(P) ipw3945 ieee80211 sdhci ieee80211_crypt ohci1394 intel_agp
mmc_core firmware_class ieee1394 b44 mii ag
pgart ehci_hcd i2c_i801 i2c_core uhci_hcd snd_hda_intel snd_hda_codec
snd_usb_audio snd_pcm snd_timer snd_page_a
lloc snd_usb_lib usbcore snd_rawmidi snd_seq_device snd_hwdep snd
soundcore reiserfs sg sr_mod cdrom edd fan ata
_piix libata thermal processor sd_mod scsi_mod
Jan 18 16:54:57 pdq kernel: CPU:    0
Jan 18 16:54:57 pdq kernel: EIP:    0060:[<00000000>]    Tainted: P      VLI
Jan 18 16:54:57 pdq kernel: EFLAGS: 00010246   (2.6.19.2-default #11)
Jan 18 16:54:57 pdq kernel: EIP is at _stext+0x3feffc9c/0x14
Jan 18 16:54:57 pdq kernel: eax: c239b868   ebx: c239b868   ecx:
f8f1ac5c   edx: f4517f38
Jan 18 16:54:57 pdq kernel: esi: f4517f38   edi: ffffffea   ebp:
0000000d   esp: f4517f08
Jan 18 16:54:57 pdq kernel: ds: 007b   es: 007b   ss: 0068
Jan 18 16:54:57 pdq kernel: Process cat (pid: 4590, ti=f4516000
task=c20ea550 task.ti=f4516000)
Jan 18 16:54:57 pdq kernel: Stack: f8f0ba63 c239b868 f7a25940 f4478000
f8f17c46 00000000 00001000 00000000
Jan 18 16:54:57 pdq kernel:        00000000 000280d0 00000010 00000000
f4509080 f4478000 f7ddcd48 c035744c
Jan 18 16:54:57 pdq kernel:        f7ddcd48 c022462c f4500380 f75887f4
c019de74 00001000 08051000 00000002
Jan 18 16:54:57 pdq kernel: Call Trace:
Jan 18 16:54:57 pdq kernel:  [<f8f0ba63>] pvr2_ctrl_get_value+0x2e/0x4b
[pvrusb2]
Jan 18 16:54:57 pdq kernel:  [<f8f17c46>] show_val_norm+0x33/0xa1 [pvrusb2]
Jan 18 16:54:57 pdq kernel:  [<c022462c>] class_device_attr_show+0x16/0x19
Jan 18 16:54:57 pdq kernel:  [<c019de74>] sysfs_read_file+0x7d/0x121
Jan 18 16:54:57 pdq kernel:  [<c019ddf7>] sysfs_read_file+0x0/0x121
Jan 18 16:54:57 pdq kernel:  [<c016790b>] vfs_read+0xa6/0x157
Jan 18 16:54:57 pdq kernel:  [<c0167d75>] sys_read+0x41/0x67
Jan 18 16:54:57 pdq kernel:  [<c0103d6d>] sysenter_past_esp+0x56/0x79
Jan 18 16:54:57 pdq kernel:  [<c02a007b>] skb_cow_data+0xc0/0x216
Jan 18 16:54:57 pdq kernel:  =======================
Jan 18 16:54:57 pdq kernel: Code:  Bad EIP value.
Jan 18 16:54:57 pdq kernel: EIP: [<00000000>] _stext+0x3feffc9c/0x14
SS:ESP 0068:f4517f08
Jan 18 16:55:12 pdq su: (to root) brand on /dev/pts/2