Hi,
I few weeks ago, my USB DVB device oopsed when I unplugged it:
Apr 14 14:47:53 volcano kernel: usb 4-6: new high speed USB device using
ehci_hcd and address 3
Apr 14 14:47:53 volcano kernel: usb 4-6: configuration #1 chosen from 1 choice
Apr 14 14:47:53 volcano kernel: dvb-usb: found a 'Hauppauge WinTV-NOVA-T usb2'
in cold state, will
try to load a firmware
Apr 14 14:47:54 volcano kernel: firmware_loading_store: unexpected value (0)
Apr 14 14:47:54 volcano kernel: dvb-usb: downloading firmware from file
'dvb-usb-nova-t-usb2-01.fw'
Apr 14 14:47:54 volcano kernel: usbcore: registered new driver
dvb_usb_nova_t_usb2
Apr 14 14:47:54 volcano kernel: usb 4-6: USB disconnect, address 3
Apr 14 14:47:54 volcano kernel: dvb-usb: generic DVB-USB module successfully
deinitialized and
disconnected.
Apr 14 14:47:55 volcano kernel: usb 4-6: new high speed USB device using
ehci_hcd and address 4
Apr 14 14:47:56 volcano kernel: usb 4-6: configuration #1 chosen from 1 choice
Apr 14 14:47:56 volcano kernel: dvb-usb: found a 'Hauppauge WinTV-NOVA-T usb2'
in warm state.
Apr 14 14:47:56 volcano kernel: dvb-usb: will pass the complete MPEG2 transport
stream to the
software demuxer.
Apr 14 14:47:56 volcano kernel: DVB: registering new adapter (Hauppauge
WinTV-NOVA-T usb2).
Apr 14 14:47:56 volcano kernel: dvb-usb: MAC address: 00:0d:fe:03:77:33
Apr 14 14:47:56 volcano kernel: i2c_adapter i2c-1: SMBus Quick command not
supported, can't probe
for chips
Apr 14 14:47:56 volcano kernel: dib3000: Found a DiBcom 3000P.
Apr 14 14:47:56 volcano kernel: DVB: registering frontend 0 (DiBcom 3000P/M-C
DVB-T)...
Apr 14 14:47:56 volcano kernel: input: IR-receiver inside an USB DVB receiver as
/class/input/input3
Apr 14 14:47:56 volcano kernel: dvb-usb: schedule remote query interval to 100
msecs.
Apr 14 14:47:56 volcano kernel: dvb-usb: Hauppauge WinTV-NOVA-T usb2
successfully initialized and
connected.
Apr 14 15:20:03 volcano kernel: dvb-usb: bulk message failed: -71 (2/0)
Apr 14 15:20:03 volcano kernel: usb 4-6: USB disconnect, address 4
Apr 14 15:20:03 volcano kernel: dvb-usb: bulk message failed: -22 (2/-402727064)
Apr 14 15:20:03 volcano kernel: dvb-usb: Hauppauge WinTV-NOVA-T usb2
successfully deinitialized
and disconnected.
Apr 14 15:20:03 volcano kernel: Unable to handle kernel paging request at
virtual address 313a3030
Apr 14 15:20:03 volcano kernel: printing eip:
Apr 14 15:20:03 volcano kernel: 313a3030
Apr 14 15:20:03 volcano kernel: *pde = 00000000
Apr 14 15:20:03 volcano kernel: Oops: 0000 [#1]
Apr 14 15:20:03 volcano kernel: PREEMPT SMP
Apr 14 15:20:03 volcano kernel: Modules linked in: dvb_usb_nova_t_usb2
dvb_usb_dibusb_common
dib3000mc dib3000_common dvb_usb dvb_core crc32 firmware_class dvb_pll sha512
crypto_null des loop
sg scsi_mod pegasus mii i2c_dev ah6 esp6 ipcomp ah4 esp4 msr cpuid snd_rtctimer
snd_seq_midi
radeon drm pwc eeprom pcspkr p4_clockmod speedstep_lib nfsd exportfs ipv6 ppdev
autofs4 nfs lockd
sunrpc af_packet binfmt_misc video thermal processor fan button ac lp
parport_pc parport nvram
eth1394 video1394 raw1394 compat_ioctl32 videodev snd_emu10k1_synth
snd_emux_synth snd_seq_virmidi
snd_seq_midi_emul snd_usb_audio snd_usb_lib ohci1394 ieee1394 snd_intel8x0
snd_seq_dummy
snd_emu10k1 snd_seq_oss snd_seq_midi_event snd_seq ehci_hcd snd_rawmidi
snd_ac97_codec
snd_ac97_bus snd_seq_device e1000 uhci_hcd snd_util_mem snd_hwdep i2c_i801
snd_pcm_oss
snd_mixer_oss serio_raw psmouse i2c_core e7xxx_edac edac_mc snd_pcm ide_cd
snd_timer snd soundcore
snd_page_alloc intel_agp agpgart cdrom usbcore ext3 jbd
Apr 14 15:20:03 volcano kernel: CPU: 2
Apr 14 15:20:03 volcano kernel: EIP: 0060:[<313a3030>] Not tainted VLI
Apr 14 15:20:03 volcano kernel: EFLAGS: 00210246 (2.6.16.2 #1)
Apr 14 15:20:03 volcano kernel: EIP is at 0x313a3030
Apr 14 15:20:03 volcano kernel: eax: d2b8b000 ebx: d2b8bb18 ecx: e7fedf40
edx: e7fedf44
Apr 14 15:20:03 volcano kernel: esi: d2b8b000 edi: eff2f8c0 ebp: 00200213
esp: e7fedf3c
Apr 14 15:20:03 volcano kernel: ds: 007b es: 007b ss: 0068
Apr 14 15:20:03 volcano kernel: Process events/2 (pid: 16, threadinfo=e7fed000
task=eff3b030)
Apr 14 15:20:03 volcano kernel: Stack: <0>f0f9366f d2b8bb1c b0126090 d2b8bb18
d2b8bb1c b0125b49
f0f93652 d2b8b000
Apr 14 15:20:03 volcano kernel: eff2f8d0 eff2f8c0 eff2f8d8 b0126090
b0126176 00000000
00000000 00000000
Apr 14 15:20:04 volcano kernel: 00000000 00000000 e7f01030 b02892c0
b18070e0 00000001
00000000 00000000
Apr 14 15:20:04 volcano kernel: Call Trace:
Apr 14 15:20:04 volcano kernel: [<f0f9366f>]
dvb_usb_read_remote_control+0x1d/0xba [dvb_usb]
Apr 14 15:20:04 volcano kernel: [<b0126090>] worker_thread+0x0/0x118
Apr 14 15:20:04 volcano kernel: [<b0125b49>] run_workqueue+0x7f/0xba
Apr 14 15:20:04 volcano kernel: [<f0f93652>]
dvb_usb_read_remote_control+0x0/0xba [dvb_usb]
Apr 14 15:20:04 volcano kernel: [<b0126090>] worker_thread+0x0/0x118
Apr 14 15:20:04 volcano kernel: [<b0126176>] worker_thread+0xe6/0x118
Apr 14 15:20:04 volcano kernel: [<b0113765>] default_wake_function+0x0/0xc
Apr 14 15:20:04 volcano kernel: [<b0128744>] kthread+0x9f/0xcb
Apr 14 15:20:04 volcano kernel: [<b01286a5>] kthread+0x0/0xcb
Apr 14 15:20:04 volcano kernel: [<b0100c05>] kernel_thread_helper+0x5/0xb
Apr 14 15:20:04 volcano kernel: Code: Bad EIP value.
After examining the dvb_usb_remote_exit() and dvb_usb_read_remote_control()
functions, I was
wondering whether the problem is that dvb_usb_remote_exit() function calls
cancel_delayed_work()
instead of cancel_rearming_delayed_work():
if (d->state & DVB_USB_STATE_REMOTE) {
cancel_delayed_work(&d->rc_query_work);
flush_scheduled_work();
input_unregister_device(d->rc_input_dev);
}
given that the dvb_usb_read_remote_control() function has this line at the end:
schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
Cheers,
Chris
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