ivtv oops

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[ 2075.064142] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000050
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[ 2075.064147] printing eip: f8e5f5eb *pde = 00000000
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[ 2075.064152] Oops: 0000 [#1] SMP
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[ 2075.064155] Modules linked in: ivtv_fb af_packet radeon drm rfcomm l2cap bluetooth nfs lockd nfs_acl sunrpc ppdev lp video output sbs sbshc dock container battery ac capifs rsrc_nonstatic pcmcia_core xfs reiserfs jfs nls_iso8859_1 nls_cp437 vfat fat nls_utf8 hfsplus fuse speedstep_lib cpufreq_userspace cpufreq_powersave cpufreq_ondemand acpi_cpufreq freq_table msp3400 saa7127 saa7115 tuner tea5767 tda8290 tuner_simple mt20xx tea5761 tda10021 snd_hda_intel budget_av saa7146_vv videobuf_dma_sg videobuf_core budget_core dvb_core ivtv snd_pcm_oss saa7146 i2c_algo_bit hostap_pci ttpci_eeprom snd_mixer_oss cx2341x hostap tveeprom snd_pcm ieee80211_crypt i2c_core videodev snd_timer snd_page_alloc snd_hwdep v4l2_common v4l1_compat snd parport_pc sg button intel_agp agpgart parport soundcore iTCO_wdt iTCO_vendor_support evdev pcspkr sr_mod cdrom ext3 jbd mbcache dm_snapshot raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod dm_raid4_5 dm_mirror dm_mod sd_mod pata_jmicron usbhid hid pata_acpi ata_piix ata_generic r8169 ahci libata scsi_mod ehci_hcd uhci_hcd usbcore thermal processor fan vesafb fbcon tileblit font bitblit softcursor
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[ 2075.064242]
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[ 2075.064244] Pid: 22967, comm: modprobe Not tainted (2.6.24-11-generic #1)
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[ 2075.064247] EIP: 0060:[<f8e5f5eb>] EFLAGS: 00010206 CPU: 0
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[ 2075.064258] EIP is at try_mailbox+0xb/0x50 [ivtv]
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[ 2075.064260] EAX: 00000050 EBX: 00000050 ECX: 00000001 EDX: f76a6d50
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[ 2075.064263] ESI: 00000000 EDI: 00000001 EBP: f76a0000 ESP: f6acbdac
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[ 2075.064265] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
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[ 2075.064268] Process modprobe (pid: 22967, ti=f6aca000 task=f5792000 task.ti=f6aca000)
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[ 2075.064270] Stack: f6acbe58 f8e5f96b 00000000 c2011480 00000be4 c20114b4 c200db00 c0122f9b
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[ 2075.064277] 03fc68fc f76a1144 00000000 00000041 f8e690e2 00000006 00000000 f76a6d50
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[ 2075.064283] c20114b4 00000019 00000001 0006a756 f6acbe58 00000000 00000041 f76a0000
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[ 2075.064290] Call Trace:
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[ 2075.064295] [<f8e5f96b>] ivtv_api_call+0x24b/0x5a0 [ivtv]
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[ 2075.064312] [<c0122f9b>] update_curr+0xfb/0x110
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[ 2075.064333] [<f8e5fce5>] ivtv_api+0x25/0x70 [ivtv]
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[ 2075.064349] [<f8e5fdc6>] ivtv_vapi_result+0x46/0x50 [ivtv]
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[ 2075.064363] [<fa74e695>] ivtvfb_init_card+0x55/0x720 [ivtv_fb]
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[ 2075.064392] [<f906e055>] ivtvfb_init+0x55/0x10a [ivtv_fb]
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[ 2075.064402] [<c0151733>] sys_init_module+0x153/0x1960
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[ 2075.064444] [<f8e622a0>] ivtv_udma_setup+0x0/0x2a0 [ivtv]
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[ 2075.064470] [<c0105422>] syscall_call+0x7/0xb
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[ 2075.064491] =======================
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[ 2075.064492] Code: 8b 44 24 28 89 44 24 08 e8 f3 e7 2c c7 e9 60 fb ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 8b 02 53 8d 1c 89 c1 e3 04 01 d8 <8b> 00 85 c0 74 04 a8 04 74 2b f0 0f ab 4a 04 19 c0 85 c0 75 20
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[ 2075.064526] EIP: [<f8e5f5eb>] try_mailbox+0xb/0x50 [ivtv] SS:ESP 0068:f6acbdac
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[ 2075.064537] ---[ end trace 3b2a497f9ace7b70 ]---