Description of problem:

I have a webcam and a MiniDV camcorder plugged into a ieee1394 pcmcia adapter.
When I booted, I got:

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
 [<c04051ee>] show_trace_log_lvl+0x58/0x171
 [<c0405802>] show_trace+0xd/0x10
 [<c040591b>] dump_stack+0x19/0x1b
 [<c043b29a>] __lock_acquire+0xfd/0x99c
 [<c043c0aa>] lock_acquire+0x4b/0x6d
 [<c0614364>] _spin_lock_irq+0x1f/0x2e
 [<c06124c6>] wait_for_completion_timeout+0x2c/0xba
 [<f9003c4a>] scsi_send_eh_cmnd+0x201/0x35b [scsi_mod]
 [<f9003e0a>] scsi_eh_tur+0x25/0x71 [scsi_mod]
 [<f90046b5>] scsi_error_handler+0x39f/0x95a [scsi_mod]
 [<c04364a9>] kthread+0xc3/0xf2
 [<c0402005>] kernel_thread_helper+0x5/0xb
DWARF2 unwinder stuck at kernel_thread_helper+0x5/0xb
Leftover inexact backtrace:
 [<c0405802>] show_trace+0xd/0x10
 [<c040591b>] dump_stack+0x19/0x1b
 [<c043b29a>] __lock_acquire+0xfd/0x99c
 [<c043c0aa>] lock_acquire+0x4b/0x6d
 [<c0614364>] _spin_lock_irq+0x1f/0x2e
 [<c06124c6>] wait_for_completion_timeout+0x2c/0xba
 [<f9003c4a>] scsi_send_eh_cmnd+0x201/0x35b [scsi_mod]
 [<f9003e0a>] scsi_eh_tur+0x25/0x71 [scsi_mod]
 [<f90046b5>] scsi_error_handler+0x39f/0x95a [scsi_mod]
 [<c04364a9>] kthread+0xc3/0xf2
 [<c0402005>] kernel_thread_helper+0x5/0xb

When I ejected the card, I got:

pccard: card ejected from slot 0
ieee1394: Node removed: ID:BUS[1-00:1023]  GUID[0080880002103eae]
PM: Removing info for ieee1394:0080880002103eae-0
PM: Removing info for ieee1394:0080880002103eae
ieee1394: Node removed: ID:BUS[1-01:1023]  GUID[0090a950000b2255]
PM: Removing info for scsi:2:0:0:0
PM: Removing info for No Bus:target2:0:0
PM: Removing info for No Bus:host2
PM: Removing info for ieee1394:0090a950000b2255-0
PM: Removing info for ieee1394:0090a950000b2255
ieee1394: Node removed: ID:BUS[1-02:1023]  GUID[0090a94000007475]
PM: Removing info for ieee1394:0090a94000007475-0
PM: Removing info for ieee1394:0090a94000007475
BUG: unable to handle kernel NULL pointer dereference at virtual
address 00000000
 printing eip:
f93c23f7
*pde = 00000000
Oops: 0000 [#1]
SMP
last sysfs file: /class/pcmcia_socket/pcmcia_socket0/card_eject
Modules linked in: i915 drm autofs4 hidp l2cap bluetooth
cpufreq_ondemand ipv6 vfat fat dm_mirror dm_mod video sbs i2c_ec
button battery asus_acpi ac parport_pc lp parport dv1394 raw1394 sbp2
joydev snd_intel8x0 snd_seq_dummy snd_seq_oss snd_seq_midi_event
snd_seq snd_seq_device snd_pcm_oss i2c_i801 i2c_core sd_mod
snd_intel8x0m snd_ac97_codec ipw2200 snd_ac97_bus ieee80211
ieee80211_crypt pcspkr snd_mixer_oss sg snd_pcm sdhci snd_timer snd
mmc_core soundcore snd_page_alloc 8139too 8139cp mii serio_raw
ohci1394 ieee1394 ide_cd cdrom usb_storage scsi_mod ext3 jbd ehci_hcd
ohci_hcd uhci_hcd
CPU:    0
EIP:    0060:[<f93c23f7>]    Not tainted VLI
EFLAGS: 00010286   (2.6.17-1.2630.fc6 #1)
EIP is at dv1394_remove_host+0x1a/0xb8 [dv1394]
eax: f9199140   ebx: 00000001   ecx: 00000000   edx: f93c23dd
esi: 00000000   edi: f93c39c8   ebp: ed410e0c   esp: ed410e00
ds: 007b   es: 007b   ss: 0068
Process pccardctl (pid: 17878, ti=ed410000 task=dff1cab0 task.ti=ed410000)
Stack: f93c5ba0 f7688000 f93c5ba0 ed410e28 f9161410 00000000 00000206 f93c5ba0
      f7688000 f911662c ed410e38 f91616b8 f7688000 f768ae28 ed410e44 f91610c4
      dfe0c02c ed410e5c f910febe f768ab48 dfe0c02c dfe0c074 f911662c ed410e68
Call Trace:
 [<f9161410>] __unregister_host+0x1b/0x95 [ieee1394]
 [<f91616b8>] highlevel_remove_host+0x24/0x47 [ieee1394]
 [<f91610c4>] hpsb_remove_host+0x3b/0x5b [ieee1394]
 [<f910febe>] ohci1394_pci_remove+0x48/0x1d5 [ohci1394]
 [<c04f3ed3>] pci_device_remove+0x19/0x2c
 [<c0554fcf>] __device_release_driver+0x63/0x79
 [<c0555224>] device_release_driver+0x2e/0x3e
 [<c055490d>] bus_remove_device+0x81/0x91
 [<c05538c2>] device_del+0x115/0x149
 [<c0553901>] device_unregister+0xb/0x15
 [<c04f1c21>] pci_remove_bus_device+0x3c/0xc6
 [<c04f1cc8>] pci_remove_behind_bridge+0x1d/0x31
 [<c057872e>] cb_free+0x1a/0x1d
 [<c0575757>] socket_shutdown+0x70/0xd7
 [<c05757db>] socket_remove+0x1d/0x24
 [<c0575824>] pcmcia_eject_card+0x42/0x50
 [<c0578172>] pccard_store_eject+0x1c/0x24
 [<c0556230>] class_device_attr_store+0x1d/0x22
 [<c04aa408>] sysfs_write_file+0xab/0xd1
 [<c04735a8>] vfs_write+0xab/0x157
 [<c0473bed>] sys_write+0x3b/0x60
 [<c0403faf>] syscall_call+0x7/0xb
DWARF2 unwinder stuck at syscall_call+0x7/0xb
Leftover inexact backtrace:
 [<c0405391>] show_stack_log_lvl+0x8a/0x95
 [<c04054c9>] show_registers+0x12d/0x19a
 [<c04056c6>] die+0x190/0x293
 [<c06156c5>] do_page_fault+0x3dc/0x4a4
 [<c0404be1>] error_code+0x39/0x40
 [<f9161410>] __unregister_host+0x1b/0x95 [ieee1394]
 [<f91616b8>] highlevel_remove_host+0x24/0x47 [ieee1394]
 [<f91610c4>] hpsb_remove_host+0x3b/0x5b [ieee1394]
 [<f910febe>] ohci1394_pci_remove+0x48/0x1d5 [ohci1394]
 [<c04f3ed3>] pci_device_remove+0x19/0x2c
 [<c0554fcf>] __device_release_driver+0x63/0x79
 [<c0555224>] device_release_driver+0x2e/0x3e
 [<c055490d>] bus_remove_device+0x81/0x91
 [<c05538c2>] device_del+0x115/0x149
 [<c0553901>] device_unregister+0xb/0x15
 [<c04f1c21>] pci_remove_bus_device+0x3c/0xc6
 [<c04f1cc8>] pci_remove_behind_bridge+0x1d/0x31
 [<c057872e>] cb_free+0x1a/0x1d
 [<c0575757>] socket_shutdown+0x70/0xd7
 [<c05757db>] socket_remove+0x1d/0x24
 [<c0575824>] pcmcia_eject_card+0x42/0x50
 [<c0578172>] pccard_store_eject+0x1c/0x24
 [<c0556230>] class_device_attr_store+0x1d/0x22
 [<c04aa408>] sysfs_write_file+0xab/0xd1
 [<c04735a8>] vfs_write+0xab/0x157
 [<c0473bed>] sys_write+0x3b/0x60
 [<c0403faf>] syscall_call+0x7/0xb
Code: 20 25 c7 89 da 89 9e 90 00 00 00 eb d8 5b 5e 5d c3 55 89 e5 57
bf c8 39 3c f9 56 53 8b 98 44 2b 00 00 8b 80 3c 2b 00 00 8b 70 04 <ac>
ae 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 0f 85 81
EIP: [<f93c23f7>] dv1394_remove_host+0x1a/0xb8 [dv1394] SS:ESP 0068:ed410e00

Version-Release number of selected component (if applicable):

2.6.17-1.2630.fc6

How reproducible:

I will check.

Steps to Reproduce:
1. Boot
2. pccardctl eject
3. pull card
  
I will add additional hardware info soon.