[linux-dvb] ttusb-dec: Oops on 2.6.8-rc*-mm*

[Nyk Tarr <nyk@giantx.co.uk>]

I compiled 2.6.8-rc1-mm1 and 2.6.8-rc2-mm2 and get an Oops on inserting
my ttusb-dec, I tried dvb cvs and the same thing happened. It works fine
with 2.6.8-rc1 and 2.6.8-rc2. BTW, hotplug is installed and working.

I tried reverting the usb patch from -mm but I got a similar Oops.
Does anyone know what's causing this?

Jul 31 22:20:21 natsu kernel: ohci_hcd 0000:00:02.1: wakeup
Jul 31 22:20:21 natsu kernel: usb 2-2: new full speed USB device using address 2
Jul 31 22:21:30 natsu kernel: usb 2-2: USB disconnect, address 2
Jul 31 22:22:40 natsu kernel: ohci_hcd 0000:00:02.1: wakeup
Jul 31 22:22:40 natsu kernel: usb 2-2: new full speed USB device using address 3
Jul 31 22:22:40 natsu kernel: usbcore: registered new driver ttusb-dec
Jul 31 22:22:40 natsu usb.agent[4091]:      ttusb_dec: loaded successfully
Jul 31 22:22:40 natsu kernel: ttusb_dec: Firmware 1.11uk
Jul 31 22:22:40 natsu kernel: ttusb_dec: found DSP code "DEC2540-t".
Jul 31 22:22:44 natsu kernel: Unable to handle kernel NULL pointer dereference at virtual address 000000b8
Jul 31 22:22:44 natsu kernel: printing eip:
Jul 31 22:22:44 natsu kernel: c010a1c2
Jul 31 22:22:44 natsu kernel: *pde = 2ff6d067
Jul 31 22:22:44 natsu kernel: *pte = 00000000
Jul 31 22:22:44 natsu kernel: Oops: 0000 [#1]
Jul 31 22:22:44 natsu kernel: Modules linked in: ttusb_dec dvb_core
firmware_class crc32 thermal fan ipt_LOG 
ipt_REJECT ipt_state iptable_filter iptable_nat ip_conntrack_ftp
ipt_helper ip_tables ip_conntrack snd_cmipci
 snd_opl3_lib snd_mpu401_uart snd_emu10k1 snd_rawmidi snd_pcm_oss
 snd_mixer_oss snd_pcm snd_timer snd_seq_dev
 ice snd_ac97_codec snd_page_alloc snd_util_mem snd_hwdep snd forcedeth
 ehci_hcd ohci_hcd usbcore nvidia_agp agpgart w83627hf i2c_sensor evdev i2c_isa joydev analog emu10k1_gp
 gameport ide_cd cdrom
 Jul 31 22:22:44 natsu kernel: CPU:    0
 Jul 31 22:22:44 natsu kernel: EIP:    0060:[<c010a1c2>]    Not tainted VLI
 Jul 31 22:22:44 natsu kernel: EFLAGS: 00010246   (2.6.8-rc2-mm1) 
 Jul 31 22:22:44 natsu kernel: EIP is at dma_free_coherent+0x2/0x50
 Jul 31 22:22:44 natsu kernel: eax: 00000000   ebx: 00000004   ecx: c0358000   edx: 00003ff0
 Jul 31 22:22:44 natsu kernel: esi: ea304000   edi: ea307564   ebp: f8e20a94   esp: f6996e00
 Jul 31 22:22:44 natsu kernel: ds: 007b   es: 007b   ss: 0068
 Jul 31 22:22:44 natsu kernel: Process khubd (pid: 1173, threadinfo=f6996000 task=f6fead50)
 Jul 31 22:22:44 natsu kernel: Stack: 00000004 ea304000 f8e1c99e 00358000 00070009 ea304000 f7fec5a0 f8e1dced 
 Jul 31 22:22:44 natsu kernel: 1e30b9f7 c0299603 ed23c800 f8e20ae0 f7fec5a0 ffffffed f7fec608 f886306c 
 Jul 31 22:22:44 natsu kernel: f8e20b00 f7fec5b0 ffffffed c01ea642 f8e20b34 f7fec5b0 f887d140 c01ea6aa 
 Jul 31 22:22:44 natsu kernel: Call Trace:
 Jul 31 22:22:44 natsu kernel: [<f8e1c99e>] ttusb_dec_free_iso_urbs+0x3e/0x70 [ttusb_dec]
 Jul 31 22:22:44 natsu kernel: [<f8e1dced>] ttusb_dec_probe+0x8d/0x130 [ttusb_dec]
 Jul 31 22:22:44 natsu kernel: [<f886306c>] usb_probe_interface+0x4c/0x60 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<c01ea642>] bus_match+0x32/0x60
 Jul 31 22:22:44 natsu kernel: [<c01ea6aa>] device_attach+0x3a/0x90
 Jul 31 22:22:44 natsu kernel: [<c01ea974>] bus_add_device+0x54/0xa0
 Jul 31 22:22:44 natsu kernel: [<c01e98e4>] device_add+0x94/0x110
 Jul 31 22:22:44 natsu kernel: [<f88697e0>] usb_set_configuration+0x280/0x3e0 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<f8865022>] usb_new_device+0xa2/0x160 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<f8865c1b>] hub_port_connect_change+0x1bb/0x340 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<f8865fc3>] hub_events+0x223/0x330 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<f8866105>] hub_thread+0x35/0x110 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<c01166d0>] autoremove_wake_function+0x0/0x50
 Jul 31 22:22:44 natsu kernel: [<c0103c5e>] ret_from_fork+0x6/0x14
 Jul 31 22:22:44 natsu kernel: [<c01166d0>] autoremove_wake_function+0x0/0x50
 Jul 31 22:22:44 natsu kernel: [<f88660d0>] hub_thread+0x0/0x110 [usbcore]
 Jul 31 22:22:44 natsu kernel: [<c010227d>] kernel_thread_helper+0x5/0x18
 Jul 31 22:22:44 natsu kernel: Code: 02 66 ab f6 c3 01 74 01 aa 8b 7c 24 04 8d 82 00 00 00 40 89 07 eb 90 31 c 0 eb 8e 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 56 53 <8b> b0 b8 00 00 00 89 cb 8d 42 ff ba ff ff ff ff c1  e8 0b 42 d1 
 Jul 31 22:23:00 natsu udev[4145]: removing device node '/dev/2-2'
 

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