This happens with cd05a1f818073a623455a58e756c5b419fc98db9:
BUG: unable to handle kernel NULL pointer dereference at virtual address
000000a4
printing eip:
c021ca33
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in: snd_seq snd_seq_device wlan_wep nls_iso8859_15
nls_cp850 vfat fat appletouch dummy genrtc binfmt_misc tun
cpufreq_ondemand cpufreq_powersave cpufreq_conservative pktcdvd loop
video thermal fan eth1394 button battery ac msr cpuid acpi_cpufreq
freq_table usbhid processor eeprom uhci_hcd ehci_hcd rng_core iTCO_wdt
wlan_scan_sta usbcore ath_rate_sample tpm_infineon tpm tpm_bios ohci1394
snd_hda_intel snd_hda_codec snd_pcm ath_pci wlan snd_timer ath_hal(P)
snd soundcore snd_page_alloc ieee1394 sr_mod cdrom evdev i2c_i801
i2c_core sg
CPU: 0
EIP: 0060:[<c021ca33>] Tainted: P VLI
EFLAGS: 00210246 (2.6.21-rc4 #250)
EIP is at class_device_remove_attrs+0xa/0x30
eax: f7247c60 ebx: 00000000 ecx: f934e3d0 edx: 00000000
esi: 00000000 edi: f7247c60 ebp: 00000000 esp: ee3ebe34
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process rmmod (pid: 6961, ti=ee3eb000 task=edde05b0 task.ti=ee3eb000)
Stack: f7247c60 f7247c68 00000000 c021cb13 00000000 f7247c60 f7247af0
f933d9fb
00000000 c021cb49 f7247abc f933d9e2 f9343081 000441c7 0000001b
00000161
00000000 f94f51bf 00000000 f709a000 f933da03 c021a3aa f709a0a8
f709a0ac
Call Trace:
[<c021cb13>] class_device_del+0xba/0xe8
[<f933d9fb>] __nodemgr_remove_host_dev+0x0/0xb [ieee1394]
[<c021cb49>] class_device_unregister+0x8/0x10
[<f933d9e2>] nodemgr_remove_ne+0x61/0x7a [ieee1394]
[<f94f51bf>] ether1394_header_cache+0x0/0x4c [eth1394]
[<f933da03>] __nodemgr_remove_host_dev+0x8/0xb [ieee1394]
[<c021a3aa>] device_for_each_child+0x1a/0x3c
[<f933dd22>] nodemgr_remove_host+0x30/0x90 [ieee1394]
[<c016d0a4>] iput+0x39/0x62
[<f933b4a4>] __unregister_host+0x1a/0x98 [ieee1394]
[<c012c74f>] flush_cpu_workqueue+0x77/0x81
[<f933b238>] hl_get_hostinfo+0x1e/0x42 [ieee1394]
[<f933b6ad>] highlevel_remove_host+0x21/0x42 [ieee1394]
[<f933b136>] hpsb_remove_host+0x38/0x56 [ieee1394]
[<f93c11f4>] ohci1394_pci_remove+0x44/0x1d9 [ohci1394]
[<c02a53ad>] klist_del+0x18/0x31
[<c01d072c>] pci_device_remove+0x16/0x35
[<c021c24f>] __device_release_driver+0x6e/0x8b
[<c021c6e8>] driver_detach+0x76/0xb2
[<c021be8d>] bus_remove_driver+0x57/0x75
[<c021c744>] driver_unregister+0x8/0x13
[<c01d0876>] pci_unregister_driver+0xc/0x57
[<c013b84f>] sys_delete_module+0x192/0x1bb
[<c015042b>] remove_vma+0x36/0x3b
[<c0150de7>] do_munmap+0x193/0x1ac
[<c0103d1e>] sysenter_past_esp+0x5f/0x85
[<c02a0000>] xfrm_state_add+0x64/0x17d
=======================
Code: ff c3 85 c0 74 08 83 c0 08 e9 dd 43 f7 ff b8 ea ff ff ff c3 85 c0
74 08 83 c0 08 e9 0a 28 f7 ff c3 57 89 c7 56 53 31 db 8b 70 48 <83> be
a4 00 00 00 00 75 09 eb 17 89 f8 e8 d7 ff ff ff 89 da 83
EIP: [<c021ca33>] class_device_remove_attrs+0xa/0x30 SS:ESP 0068:ee3ebe3
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