Hi,
I got some driver crashes after upgrading to kernel 2.6.32.7. It seems that
activating either TBS8920 (DVB-S) and HVR950Q (ATSC) after the other one has
run (and is no longer in use by an application) triggers a driver crash.
Each device individually works fine (as long as the other one does not run).
I don't know how to investigate this by myself, but I am available to help.
This is not critical. The system is otherwise stable.
Here is the last event recorded in syslog. I activated the DVBS after
turning off applications running ATSC.
Feb 8 16:18:16 pc3 kernel: DVB: registering adapter 1 frontend 0 (Auvitek
AU8522 QAM/8VSB Frontend)...
Feb 8 21:37:17 pc3 kernel: cx88[0]/0: unknown tv audio mode [0]
Feb 8 23:00:45 pc3 kernel: cx88[0]/0: unknown tv audio mode [0]
Feb 8 23:01:24 pc3 last message repeated 2 times
Feb 8 23:04:00 pc3 kernel: BUG: unable to handle kernel NULL pointer
dereference at 00000004
Feb 8 23:04:00 pc3 kernel: IP: [<c11ae628>] firmware_loading_store+0x68/0x1a0
Feb 8 23:04:00 pc3 kernel: *pdpt = 000000003650e001 *pde = 0000000000000000
Feb 8 23:04:00 pc3 kernel: Oops: 0000 [#1] SMP
Feb 8 23:04:00 pc3 kernel: last sysfs file:
/sys/class/firmware/0000:08:00.0/loading
Feb 8 23:04:00 pc3 kernel: Modules linked in: xc5000 tuner au8522 au0828
videobuf_vmalloc snd_seq rtc hid_logitech ext4 jbd2 crc16 nls_iso8859_1
nls_cp437 bsd_comp ppp_deflate zlib_deflate ppp_async crc_ccitt ppp_generic slhc
parport_pc lp parport joydev usb_storage usblp snd_usb_audio snd_usb_lib
snd_rawmidi snd_seq_device usbhid snd_hwdep cx24116 cx88_dvb cx88_vp3054_i2c
videobuf_dvb dvb_core snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_pcm_oss cx8802 snd_mixer_oss cx8800 cx88xx snd_pcm ir_common i2c_i801
i2c_algo_bit v4l2_common snd_timer tveeprom ohci1394 sky2 ehci_hcd snd videodev
v4l1_compat videobuf_dma_sg btcx_risc ieee1394 8250_pnp 8250 serial_core
uhci_hcd bitrev nvidia(P) crc32 agpgart videobuf_core soundcore snd_page_alloc
i2c_core usbcore sg evdev
Feb 8 23:04:00 pc3 kernel:
Feb 8 23:04:00 pc3 kernel: Pid: 6390, comm: firmware.agent Tainted: P
(2.6.32.7 #1) P5E WS Pro
Feb 8 23:04:00 pc3 kernel: EIP: 0060:[<c11ae628>] EFLAGS: 00010296 CPU: 1
Feb 8 23:04:00 pc3 kernel: EIP is at firmware_loading_store+0x68/0x1a0
Feb 8 23:04:00 pc3 kernel: EAX: 00000000 EBX: f66a1140 ECX: 00000002 EDX:
2f1dc161
Feb 8 23:04:00 pc3 kernel: ESI: f7513440 EDI: f05b8380 EBP: 00000002 ESP:
f0c15f1c
Feb 8 23:04:00 pc3 kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 8 23:04:00 pc3 kernel: Process firmware.agent (pid: 6390, ti=f0c14000
task=f6e65850 task.ti=f0c14000)
Feb 8 23:04:00 pc3 kernel: Stack:
Feb 8 23:04:00 pc3 kernel: 00000161 80000000 0810b408 c430ed60 c10713d2
c11ae5c0 00000002 c13ab7c0
Feb 8 23:04:00 pc3 kernel: <0> 00000002 c11a6965 00000002 f66dc940 f75242f8
c10cc0d9 00000002 0810b408
Feb 8 23:04:00 pc3 kernel: <0> f66dc954 f7513448 f0c6cac0 00000002 0810b408
c10cc040 c1086ff0 f0c15f9c
Feb 8 23:04:00 pc3 kernel: Call Trace:
Feb 8 23:04:00 pc3 kernel: [<c10713d2>] ? handle_mm_fault+0x612/0x9f0
Feb 8 23:04:00 pc3 kernel: [<c11ae5c0>] ? firmware_loading_store+0x0/0x1a0
Feb 8 23:04:00 pc3 kernel: [<c11a6965>] ? dev_attr_store+0x25/0x40
Feb 8 23:04:00 pc3 kernel: [<c10cc0d9>] ? sysfs_write_file+0x99/0x100
Feb 8 23:04:00 pc3 kernel: [<c10cc040>] ? sysfs_write_file+0x0/0x100
Feb 8 23:04:00 pc3 kernel: [<c1086ff0>] ? vfs_write+0xa0/0x160
Feb 8 23:04:00 pc3 kernel: [<c1087171>] ? sys_write+0x41/0x70
Feb 8 23:04:00 pc3 kernel: [<c1002e08>] ? sysenter_do_call+0x12/0x26
Feb 8 23:04:00 pc3 kernel: Code: 04 e8 dd c8 ec ff 8b 53 40 31 c9 8b 43 3c 8b
7b 34 c7 04 24 61 01 00 00 c7 44 24 04 00 00 00 80 e8 8e cf ec ff 89 47 04 8b 43
34 <8b> 78 04 85 ff 0f 84 f4 00 00 00 c7 43 44 00 00 00 00 8d 43 04
Feb 8 23:04:00 pc3 kernel: EIP: [<c11ae628>] firmware_loading_store+0x68/0x1a0
SS:ESP 0068:f0c15f1c
Feb 8 23:04:00 pc3 kernel: CR2: 0000000000000004
Feb 8 23:04:00 pc3 kernel: ---[ end trace c07258db2013e403 ]---
Here is another event. I booted in between. The system is stable otherwise.
Feb 7 14:15:06 pc3 kernel: DVB: registering adapter 1 frontend 0 (Auvitek
AU8522 QAM/8VSB Frontend)...
Feb 7 14:15:30 pc3 udevd-event[15971]: run_program: '/lib/udev/firmware.sh'
abnormal exit
Feb 7 14:15:30 pc3 kernel: BUG: unable to handle kernel NULL pointer
dereference at 00000004
Feb 7 14:15:30 pc3 kernel: IP: [<c11ae622>] firmware_loading_store+0x62/0x1a0
Feb 7 14:15:30 pc3 kernel: *pdpt = 0000000036bc4001 *pde = 0000000000000000
Feb 7 14:15:30 pc3 kernel: Oops: 0002 [#1] SMP
Feb 7 14:15:30 pc3 kernel: last sysfs file: /sys/class/firmware/7-4/loading
Feb 7 14:15:30 pc3 kernel: Modules linked in: snd_usb_audio snd_usb_lib
snd_rawmidi snd_hwdep xc5000 tuner au8522 au0828 videobuf_vmalloc nvidia(P)
snd_seq snd_seq_device rtc hid_logitech ext4 jbd2 crc16 nls_iso8859_1 nls_cp437
bsd_comp ppp_deflate zlib_deflate ppp_async crc_ccitt ppp_generic slhc agpgart
parport_pc lp parport joydev usb_storage usbhid usblp cx24116 cx88_dvb
cx88_vp3054_i2c videobuf_dvb dvb_core snd_hda_codec_realtek snd_hda_intel cx8802
cx8800 snd_hda_codec cx88xx snd_pcm_oss ir_common snd_mixer_oss i2c_algo_bit
ohci1394 v4l2_common tveeprom i2c_i801 snd_pcm 8250_pnp 8250 serial_core
videodev v4l1_compat videobuf_dma_sg i2c_core sky2 videobuf_core ehci_hcd
ieee1394 btcx_risc snd_timer snd bitrev crc32 soundcore snd_page_alloc uhci_hcd
usbcore sg evdev [last unloaded: nvidia]
Feb 7 14:15:30 pc3 kernel:
Feb 7 14:15:30 pc3 kernel: Pid: 15972, comm: firmware.sh Tainted: P
(2.6.32.7 #1) P5E WS Pro
Feb 7 14:15:30 pc3 kernel: EIP: 0060:[<c11ae622>] EFLAGS: 00010296 CPU: 1
Feb 7 14:15:30 pc3 kernel: EIP is at firmware_loading_store+0x62/0x1a0
Feb 7 14:15:30 pc3 kernel: EAX: 00000000 EBX: f2428ac0 ECX: 00000000 EDX:
e19bc000
Feb 7 14:15:30 pc3 kernel: ESI: ed92fe00 EDI: 00000000 EBP: 00000002 ESP:
e19bdf1c
Feb 7 14:15:30 pc3 kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 7 14:15:30 pc3 kernel: Process firmware.sh (pid: 15972, ti=e19bc000
task=f6fa2760 task.ti=e19bc000)
Feb 7 14:15:30 pc3 kernel: Stack:
Feb 7 14:15:30 pc3 kernel: 00000161 80000000 0810b408 c4ff6dc0 c10713d2
c11ae5c0 00000002 c13ab7c0
Feb 7 14:15:30 pc3 kernel: <0> 00000002 c11a6965 00000002 f3f387c0 f147d744
c10cc0d9 00000002 0810b408
Feb 7 14:15:30 pc3 kernel: <0> f3f387d4 ed92fe08 ed91d940 00000002 0810b408
c10cc040 c1086ff0 e19bdf9c
Feb 7 14:15:30 pc3 kernel: Call Trace:
Feb 7 14:15:30 pc3 kernel: [<c10713d2>] ? handle_mm_fault+0x612/0x9f0
Feb 7 14:15:30 pc3 kernel: [<c11ae5c0>] ? firmware_loading_store+0x0/0x1a0
Feb 7 14:15:30 pc3 kernel: [<c11a6965>] ? dev_attr_store+0x25/0x40
Feb 7 14:15:30 pc3 kernel: [<c10cc0d9>] ? sysfs_write_file+0x99/0x100
Feb 7 14:15:30 pc3 kernel: [<c10cc040>] ? sysfs_write_file+0x0/0x100
Feb 7 14:15:30 pc3 kernel: [<c1086ff0>] ? vfs_write+0xa0/0x160
Feb 7 14:15:30 pc3 kernel: [<c1087171>] ? sys_write+0x41/0x70
Feb 7 14:15:30 pc3 kernel: [<c1002e08>] ? sysenter_do_call+0x12/0x26
Feb 7 14:15:30 pc3 kernel: Code: 62 8b 43 34 8b 40 04 e8 dd c8 ec ff 8b 53 40
31 c9 8b 43 3c 8b 7b 34 c7 04 24 61 01 00 00 c7 44 24 04 00 00 00 80 e8 8e cf ec
ff <89> 47 04 8b 43 34 8b 78 04 85 ff 0f 84 f4 00 00 00 c7 43 44 00
Feb 7 14:15:30 pc3 kernel: EIP: [<c11ae622>] firmware_loading_store+0x62/0x1a0
SS:ESP 0068:e19bdf1c
Feb 7 14:15:30 pc3 kernel: CR2: 0000000000000004
Feb 7 14:15:30 pc3 kernel: ---[ end trace dfa955c34e6458e9 ]---
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