2.6.20-rc6-rt2: kernel oops when ejecting cardbus firewire card

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I get the following Oops when ejecting a firewire cardbus controller.
The kernel is a 2.6.20-rc6 (git pull from a few hours ago), patched with Ingo's -rt2 patch.

cc'ing linux1394-devel because it seems to be a problem in the ieee1394 stack.

Pieter

Jan 26 22:29:37 localhost kernel: pccard: card ejected from slot 0
Jan 26 22:29:37 localhost kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
Jan 26 22:29:37 localhost kernel:  printing eip:
Jan 26 22:29:37 localhost kernel: f91c8a6d
Jan 26 22:29:37 localhost kernel: *pde = 05c64067
Jan 26 22:29:37 localhost kernel: stopped custom tracer.
Jan 26 22:29:37 localhost kernel: Oops: 0000 [#1]
Jan 26 22:29:37 localhost kernel: PREEMPT
Jan 26 22:29:37 localhost kernel: Modules linked in: raw1394 dv1394 ohci1394 ieee1394 nfsd exportfs lockd nfs_acl autofs4 hidp rfcomm l2cap bluetooth sunrp c vfat fat radeon drm nvram snd_intel8x0m snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_ oss snd_mixer_oss snd_pcm joydev snd_timer snd uhci_hcd i2c_i801 soundcore ipw2200 ieee80211 ieee80211_crypt 8139too mii i2c_core pcspkr snd_page_alloc rng
_core ext3 jbd
Jan 26 22:29:37 localhost kernel: CPU:    0
Jan 26 22:29:37 localhost kernel: EIP: 0060:[<f91c8a6d>] Not tainted VLI
Jan 26 22:29:37 localhost kernel: EFLAGS: 00010286   (2.6.20-rc6-rt2 #9)
Jan 26 22:29:37 localhost kernel: EIP is at dv1394_remove_host+0x17/0xc0 [dv1394] Jan 26 22:29:37 localhost kernel: eax: f88fd140 ebx: 00000001 ecx: 00000000 edx: f91c8a56 Jan 26 22:29:37 localhost kernel: esi: 00000000 edi: f91c9910 ebp: 00000000 esp: f7e49ebc Jan 26 22:29:37 localhost kernel: ds: 007b es: 007b ss: 0068 preempt: 00000001 Jan 26 22:29:37 localhost kernel: Process pccardd (pid: 284, ti=f7e48000 task=f7f68ab0 task.ti=f7e48000) Jan 26 22:29:37 localhost kernel: Stack: f91cb540 ee588000 f91cb540 f88ea50f d4142180 ee588000 00000000 f91cb540 Jan 26 22:29:37 localhost kernel: ee588000 00000000 ee589a84 f88ea759 ee588000 f8950e94 f88ea18a f7e71400 Jan 26 22:29:37 localhost kernel: f894a213 f8950f14 ee5880bc f7e71400 f8950e94 00000000 f7eae048 c01c0caf
Jan 26 22:29:37 localhost kernel: Call Trace:
Jan 26 22:29:37 localhost kernel: [<f88ea50f>] __unregister_host+0x18/0x8f [ieee1394] Jan 26 22:29:38 localhost kernel: [<f88ea759>] highlevel_remove_host+0x21/0x42 [ieee1394] Jan 26 22:29:38 localhost kernel: [<f88ea18a>] hpsb_remove_host+0x37/0x55 [ieee1394] Jan 26 22:29:38 localhost kernel: [<f894a213>] ohci1394_pci_remove+0x47/0x1e4 [ohci1394]
Jan 26 22:29:38 localhost kernel:  [<c01c0caf>] pci_device_remove+0x16/0x35
Jan 26 22:29:38 localhost kernel: [<c020fadc>] __device_release_driver+0x71/0x87 Jan 26 22:29:38 localhost kernel: [<c020fba2>] device_release_driver+0x18/0x21
Jan 26 22:29:38 localhost kernel:  [<c020f6af>] bus_remove_device+0x70/0x80
Jan 26 22:29:38 localhost kernel:  [<c020e0a9>] device_del+0x13a/0x197
Jan 26 22:29:38 localhost kernel:  [<c020e10e>] device_unregister+0x8/0x10
Jan 26 22:29:38 localhost kernel:  [<c01be718>] pci_stop_dev+0x20/0x4e
Jan 26 22:29:38 localhost kernel: [<c01be803>] pci_remove_bus_device+0x28/0x8c Jan 26 22:29:38 localhost kernel: [<c01be881>] pci_remove_behind_bridge+0x1a/0x2d
Jan 26 22:29:38 localhost kernel:  [<c022895a>] socket_shutdown+0x6d/0xb3
Jan 26 22:29:38 localhost kernel:  [<c02289bc>] socket_remove+0x1c/0x26
Jan 26 22:29:38 localhost kernel:  [<c0228f97>] pccardd+0x129/0x1ea
Jan 26 22:29:38 localhost kernel: [<c010e56c>] default_wake_function+0x0/0x16
Jan 26 22:29:38 localhost kernel:  [<c0228e6e>] pccardd+0x0/0x1ea
Jan 26 22:29:38 localhost kernel:  [<c01216ce>] kthread+0xa0/0xca
Jan 26 22:29:38 localhost kernel:  [<c012162e>] kthread+0x0/0xca
Jan 26 22:29:38 localhost kernel: [<c0102fe7>] kernel_thread_helper+0x7/0x10
Jan 26 22:29:38 localhost kernel:  =======================
Jan 26 22:29:38 localhost kernel: Code: 1c f9 e8 7f 6c 0e c7 89 da 89 9e a8 00 00 00 eb d9 5b 5e c3 57 bf 10 99 1c f9 56 53 8b 98 b0 00 00 00 8b 80 b4 00 0 0 00 8b 70 04 <ac> ae 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 0f 85 8d Jan 26 22:29:38 localhost kernel: EIP: [<f91c8a6d>] dv1394_remove_host+0x17/0xc0 [dv1394] SS:ESP 0068:f7e49ebc
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