Hello,
I've tweaked stv0297.c to tune to QAM128 cleanly on my C2300 OT cable
card, but now I'm experiencing kernel panics whenever trying to actually
capture stream from the card, please see the log at the end of this
mail. This seems to have something to do with pre-empting kernel, but it
seems a bit strange as I also have rev 2.1 card and it works perfectly.
Basically to achieve the panic, I run czap in one terminal and dvbstream
in another. My kernel is vanilla 2.6.11 and DVB drivers are fresh from
cvs, except my minor timeout modification to the stv0297.c frontend driver.
Best regards,
Mikko.
----
scheduling while atomic: czap/0x00000102/4231
[<c0351083>] schedule+0x503/0x510
[<c0122583>] __mod_timer+0x123/0x170
[<c03519e3>] schedule_timeout+0x63/0xc0
[<c02ff3b7>] qdisc_restart+0x17/0x1d0
[<c0122fe0>] process_timeout+0x0/0x10
[<c01233bf>] msleep+0x2f/0x40
[<e0a34eac>] __av7110_send_fw_cmd+0x7c/0x4e0 [dvb_ttpci]
[<e0a35358>] av7110_send_fw_cmd+0x48/0xc0 [dvb_ttpci]
[<e0a35438>] av7110_fw_cmd+0x68/0x90 [dvb_ttpci]
[<e0a3f437>] ChangePIDs+0x147/0x1f0 [dvb_ttpci]
[<e0a39c3e>] av7110_set_vidmode+0x8e/0xe0 [dvb_ttpci]
[<e0a39d29>] get_video_format+0x99/0x110 [dvb_ttpci]
[<e0a39f1f>] play_video_cb+0x17f/0x2d0 [dvb_ttpci]
[<c0115bf8>] recalc_task_prio+0x88/0x140
[<c0115d12>] activate_task+0x62/0x80
[<c0115e04>] try_to_wake_up+0xa4/0xc0
[<e0a42b94>] send_ipack+0x94/0x210 [dvb_ttpci]
[<e0a42d49>] av7110_ipack_flush+0x39/0x50 [dvb_ttpci]
[<e0a3b20c>] av7110_write_to_decoder+0xcc/0x120 [dvb_ttpci]
[<e09c40f8>] dvb_dmx_swfilter_packet+0x238/0x280 [dvb_core]
[<e09c41a2>] dvb_dmx_swfilter_packets+0x62/0x70 [dvb_core]
[<e0a3dff1>] debiirq+0x81/0x330 [dvb_ttpci]
[<c01354e0>] handle_IRQ_event+0x30/0x70
[<c011ed16>] tasklet_action+0x46/0x70
[<c011eabd>] __do_softirq+0x7d/0x90
[<c011eaf6>] do_softirq+0x26/0x30
[<c011ebc5>] irq_exit+0x35/0x40
[<c010559e>] do_IRQ+0x1e/0x30
[<c0103b96>] common_interrupt+0x1a/0x20
[<c010e6e4>] delay_pmtmr+0x14/0x20
[<c0246f52>] __delay+0x12/0x20
[<e09e1a14>] stv0297_read_ber+0x74/0x90 [stv0297]
[<e09c9c2d>] dvb_frontend_ioctl+0x4dd/0x650 [dvb_core]
[<c02ed2c9>] __kfree_skb+0xa9/0x150
[<c0247976>] copy_from_user+0x46/0x90
[<e09c17ac>] dvb_usercopy+0x8c/0x11b [dvb_core]
[<c0288f5d>] write_chan+0x15d/0x210
[<e09c12f3>] dvb_generic_ioctl+0x43/0x50 [dvb_core]
[<e09c9750>] dvb_frontend_ioctl+0x0/0x650 [dvb_core]
[<c01686af>] do_ioctl+0x6f/0xa0
[<c01688f5>] vfs_ioctl+0x65/0x1d0
[<c0168ac7>] sys_ioctl+0x67/0xa0
[<c01031af>] syscall_call+0x7/0xb
scheduling while atomic: czap/0x00000102/4231
[<c0351083>] schedule+0x503/0x510
[<c03519e3>] schedule_timeout+0x63/0xc0
[<c0122fe0>] process_timeout+0x0/0x10
[<c01233bf>] msleep+0x2f/0x40
[<e0a34eac>] __av7110_send_fw_cmd+0x7c/0x4e0 [dvb_ttpci]
[<e0a35358>] av7110_send_fw_cmd+0x48/0xc0 [dvb_ttpci]
[<e0a35438>] av7110_fw_cmd+0x68/0x90 [dvb_ttpci]
[<e0a39c5e>] av7110_set_vidmode+0xae/0xe0 [dvb_ttpci]
[<e0a39d29>] get_video_format+0x99/0x110 [dvb_ttpci]
[<e0a39f1f>] play_video_cb+0x17f/0x2d0 [dvb_ttpci]
[<c0115bf8>] recalc_task_prio+0x88/0x140
[<c0115d12>] activate_task+0x62/0x80
[<c0115e04>] try_to_wake_up+0xa4/0xc0
[<e0a42b94>] send_ipack+0x94/0x210 [dvb_ttpci]
[<e0a42d49>] av7110_ipack_flush+0x39/0x50 [dvb_ttpci]
[<e0a3b20c>] av7110_write_to_decoder+0xcc/0x120 [dvb_ttpci]
[<e09c40f8>] dvb_dmx_swfilter_packet+0x238/0x280 [dvb_core]
[<e09c41a2>] dvb_dmx_swfilter_packets+0x62/0x70 [dvb_core]
[<e0a3dff1>] debiirq+0x81/0x330 [dvb_ttpci]
[<c01354e0>] handle_IRQ_event+0x30/0x70
[<c011ed16>] tasklet_action+0x46/0x70
[<c011eabd>] __do_softirq+0x7d/0x90
[<c011eaf6>] do_softirq+0x26/0x30
[<c011ebc5>] irq_exit+0x35/0x40
[<c010559e>] do_IRQ+0x1e/0x30
[<c0103b96>] common_interrupt+0x1a/0x20
[<c010e6e4>] delay_pmtmr+0x14/0x20
[<c0246f52>] __delay+0x12/0x20
[<e09e1a14>] stv0297_read_ber+0x74/0x90 [stv0297]
[<e09c9c2d>] dvb_frontend_ioctl+0x4dd/0x650 [dvb_core]
[<c02ed2c9>] __kfree_skb+0xa9/0x150
[<c0247976>] copy_from_user+0x46/0x90
[<e09c17ac>] dvb_usercopy+0x8c/0x11b [dvb_core]
[<c0288f5d>] write_chan+0x15d/0x210
[<e09c12f3>] dvb_generic_ioctl+0x43/0x50 [dvb_core]
[<e09c9750>] dvb_frontend_ioctl+0x0/0x650 [dvb_core]
[<c01686af>] do_ioctl+0x6f/0xa0
[<c01688f5>] vfs_ioctl+0x65/0x1d0
[<c0168ac7>] sys_ioctl+0x67/0xa0
[<c01031af>] syscall_call+0x7/0xb
scheduling while atomic: swapper/0x00000102/0
[<c0351083>] schedule+0x503/0x510
[<e0a39ef3>] play_video_cb+0x153/0x2d0 [dvb_ttpci]
[<e0a39fe8>] play_video_cb+0x248/0x2d0 [dvb_ttpci]
[<c0115bf8>] recalc_task_prio+0x88/0x140
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<e0a42b94>] send_ipack+0x94/0x210 [dvb_ttpci]
[<e0a42d49>] av7110_ipack_flush+0x39/0x50 [dvb_ttpci]
[<e0a3b20c>] av7110_write_to_decoder+0xcc/0x120 [dvb_ttpci]
[<e09c40f8>] dvb_dmx_swfilter_packet+0x238/0x280 [dvb_core]
[<e09c41a2>] dvb_dmx_swfilter_packets+0x62/0x70 [dvb_core]
[<e0a3dff1>] debiirq+0x81/0x330 [dvb_ttpci]
[<c01354e0>] handle_IRQ_event+0x30/0x70
[<c011ed16>] tasklet_action+0x46/0x70
[<c011eabd>] __do_softirq+0x7d/0x90
[<c011eaf6>] do_softirq+0x26/0x30
[<c011ebc5>] irq_exit+0x35/0x40
[<c010559e>] do_IRQ+0x1e/0x30
[<c0103b96>] common_interrupt+0x1a/0x20
[<c0101053>] default_idle+0x23/0x30
[<c01010d8>] cpu_idle+0x48/0x60
[<c04287c4>] start_kernel+0x174/0x1b0
[<c0428380>] unknown_bootoption+0x0/0x1b0
bad: scheduling from the idle thread!
[<c0351048>] schedule+0x4c8/0x510
[<e0a39fe8>] play_video_cb+0x248/0x2d0 [dvb_ttpci]
[<e0a39fe8>] play_video_cb+0x248/0x2d0 [dvb_ttpci]
[<c0115bf8>] recalc_task_prio+0x88/0x140
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<e0a42b94>] send_ipack+0x94/0x210 [dvb_ttpci]
[<e0a42d49>] av7110_ipack_flush+0x39/0x50 [dvb_ttpci]
[<e0a3b20c>] av7110_write_to_decoder+0xcc/0x120 [dvb_ttpci]
[<e09c40f8>] dvb_dmx_swfilter_packet+0x238/0x280 [dvb_core]
[<e09c41a2>] dvb_dmx_swfilter_packets+0x62/0x70 [dvb_core]
[<e0a3dff1>] debiirq+0x81/0x330 [dvb_ttpci]
[<c01354e0>] handle_IRQ_event+0x30/0x70
[<c011ed16>] tasklet_action+0x46/0x70
[<c011eabd>] __do_softirq+0x7d/0x90
[<c011eaf6>] do_softirq+0x26/0x30
[<c011ebc5>] irq_exit+0x35/0x40
[<c010559e>] do_IRQ+0x1e/0x30
[<c0103b96>] common_interrupt+0x1a/0x20
[<c0101053>] default_idle+0x23/0x30
[<c01010d8>] cpu_idle+0x48/0x60
[<c04287c4>] start_kernel+0x174/0x1b0
[<c0428380>] unknown_bootoption+0x0/0x1b0
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c0115a56
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
Modules linked in: dvb_usb_umt_010 dvb_usb_nova_t_usb2 dvb_usb_a800
dvb_usb_dibu
sb_mc dvb_usb_dibusb_mb dvb_usb_dibusb_common dvb_usb_dtt200u
dvb_usb_vp7045 dvb
_usb cinergyT2 b2c2_flexcop_pci b2c2_flexcop_usb b2c2_flexcop ttusb_dec
dvb_ttus
b_budget budget_av budget_ci budget budget_core dvb_ttpci ttpci_eeprom
saa7146_v
v saa7146 ttusbdecfe nxt2002 stv0297 mt352 mt312 cx22702 cx24110 tda8083
l64781
dib3000mc dib3000mb dib3000_common tda10021 tda1004x ves1820 stv0299
cx22700 sp8
870 ves1x93 dvb_pll dvb_core video_buf v4l2_common v4l1_compat videodev
firmware
_class i2c_core sd_mod sg sr_mod scsi_mod ipv6 af_packet evdev floppy
pci_hotplu
g ehci_hcd usbcore psmouse genrtc unix
CPU: 0
EIP: 0060:[<c0115a56>] Tainted: P VLI
EFLAGS: 00010086 (2.6.11)
EIP is at dequeue_task+0x16/0x50
eax: 00000000 ebx: c03a4b40 ecx: c03a4b20 edx: c03a4b20
esi: 00000000 edi: de22429c ebp: c0427da8 esp: c0427da0
ds: 007b es: 007b ss: 0068
Process swapper (pid: 0, threadinfo=c0426000 task=c03a4b20)
Stack: c03a4b20 de22428c c0427dbc c0115d50 c03a4b20 00000000 00000000
c0427dfc
c0350ca8 c03a4b20 c045c260 00000102 00000000 00000000 000002e0
25500080
ac61b440 000f4224 c03a4b20 c03a4c70 c0426000 de22428c de22429c
00000712
Call Trace:
[<c0115d50>] deactivate_task+0x20/0x30
[<c0350ca8>] schedule+0x128/0x510
[<e0a39fe8>] play_video_cb+0x248/0x2d0 [dvb_ttpci]
[<c0115bf8>] recalc_task_prio+0x88/0x140
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<c012e6b0>] autoremove_wake_function+0x0/0x60
[<e0a42b94>] send_ipack+0x94/0x210 [dvb_ttpci]
[<e0a42d49>] av7110_ipack_flush+0x39/0x50 [dvb_ttpci]
[<e0a3b20c>] av7110_write_to_decoder+0xcc/0x120 [dvb_ttpci]
[<e09c40f8>] dvb_dmx_swfilter_packet+0x238/0x280 [dvb_core]
[<e09c41a2>] dvb_dmx_swfilter_packets+0x62/0x70 [dvb_core]
[<e0a3dff1>] debiirq+0x81/0x330 [dvb_ttpci]
[<c01354e0>] handle_IRQ_event+0x30/0x70
[<c011ed16>] tasklet_action+0x46/0x70
[<c011eabd>] __do_softirq+0x7d/0x90
[<c011eaf6>] do_softirq+0x26/0x30
[<c011ebc5>] irq_exit+0x35/0x40
[<c010559e>] do_IRQ+0x1e/0x30
[<c0103b96>] common_interrupt+0x1a/0x20
[<c0101053>] default_idle+0x23/0x30
[<c01010d8>] cpu_idle+0x48/0x60
[<c04287c4>] start_kernel+0x174/0x1b0
[<c0428380>] unknown_bootoption+0x0/0x1b0
Code: ff 40 14 b8 60 c2 45 c0 c9 c3 8d 74 26 00 8d bc 27 00 00 00 00 55
89 e5 83
ec 08 89 74 24 04 8b 55 08 89 1c 24 8b 75 0c 8d 5a 20 <ff> 0e 8b 42 20
8b 4b 04
89 01 89 48 04 c7 42 20 00 01 10 00 c7
<0>Kernel panic - not syncing: Fatal exception in interrupt
