[linux-dvb] Re: kernel oops

[syrius.ml@no-log.org]

syrius.ml@no-log.org writes:

> [...]
> Dec 21 20:39:18 dvb kernel: Modules linked in: lirc_serial lirc_dev ipv6 nfs lockd sunrpc budget_ci tda1004x budget_core dvb_ttpci dvb_core saa7146_vv video_buf saa7146 v4l1_compat v4l2_common videodev ves1820 stv0299 tda8083 stv0297 sp8870 firmware_class ves1x93 ttpci_eeprom 3c59x snd_via82xx snd_ac97_codec snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore uhci_hcd usbcore via_agp agpgart parport_pc parport pcspkr evdev adm1021 eeprom w83781d i2c_sensor i2c_viapro i2c_isa i2c_core rtc unix raid1 linear md dm_bbr dm_mirror dm_mod

as you can see this oops is from a first test when all dvb modules
were loaded before the unload. the kernel oops is stil the same when
only budget_ci is loaded.

anyway it seems something is really broken:
(when running vdr)

Unable to handle kernel NULL pointer dereference at virtual address 000001ac
 printing eip:
c8b0a120
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: budget_ci tda1004x budget_core dvb_ttpci dvb_core saa7146_vv video_buf saa7146 v4l1_compat v4l2_common videodev ves1820 stv0299 tda8083 stv0297 sp8870 firmware_class ves1x93 ttpci_eeprom snd_via82xx snd_ac97_codec snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore uhci_hcd usbcore via_agp agpgart parport_pc parport pcspkr evdev lirc_serial lirc_dev ipv6 nfs lockd sunrpc 3c59x adm1021 eeprom w83781d i2c_sensor i2c_viapro i2c_isa i2c_core rtc unix raid1 linear md dm_bbr dm_mirror dm_mod
CPU:    0
EIP:    0060:[<c8b0a120>]    Not tainted VLI
EFLAGS: 00010246   (2.6.10-rc3-bk13) 
EIP is at dvb_frontend_start+0x20/0x100 [dvb_core]
eax: 00000000   ebx: 00000000   ecx: 00000000   edx: c61035a0
esi: c6bd60fc   edi: c6bd60fc   ebp: 00000000   esp: c61d5ec0
ds: 007b   es: 007b   ss: 0068
Process vdr (pid: 4295, threadinfo=c61d4000 task=c7ec0560)
Stack: c015b192 0000002c 080892d0 00000000 c7466240 c8b0a958 c6bd60fc c7466240 
       c8b14fe0 c7466240 c7a65290 00000000 c8b0213a c7a65290 c7466240 c65c1e00 
       00000000 c8b02080 c7a65290 c01575be c7a65290 c7466240 00000803 0000000e 
Call Trace:
 [<c015b192>] generic_permission+0xc2/0x190
 [<c8b0a958>] dvb_frontend_open+0x68/0xb0 [dvb_core]
 [<c8b0213a>] dvb_device_open+0xba/0x120 [dvb_core]
 [<c8b02080>] dvb_device_open+0x0/0x120 [dvb_core]
 [<c01575be>] chrdev_open+0xae/0x150
 [<c014e21a>] dentry_open+0x12a/0x1d0
 [<c014e0e8>] filp_open+0x68/0x70
 [<c01b2fd0>] kobject_release+0x0/0x10
 [<c014e2fe>] get_unused_fd+0x3e/0xd0
 [<c014e429>] sys_open+0x49/0x90
 [<c0102fd3>] syscall_call+0x7/0xb
Code: 60 f7 e9 4c fe ff ff 8d 74 26 00 83 ec 14 8b 0d 30 5c b1 c8 89 74 24 10 8b 74 24 18 85 c9 89 5c 24 0c 8b 5e 0c 0f 85 c5 00 00 00 <8b> 83 ac 01 00 00 85 c0 74 26 8b 83 dc 01 00 00 85 c0 75 10 31 

 
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