cardbus panic: end address is not aligned

I have 2 ath-based pc-card adapters. If I put either one of them in the 
slot while the system is up, or if I try booting with them in the slot, 
I get an instant panic. The cards previously worked in -current, and 
continue to work in 8-stable and windows xp. I don't have any other 
pc-cards to compare with. Full core.txt.0 file is in my home directory 
on freefall.

This problem persists on r223732 but happened to me for the first time a 
week or 2 ago (haven't had time to report it previously, apologies). It 
likely originated a while before though, I don't use these cards very 
often.

panic: end address is not aligned

#1  0xffffffff80426a8a in kern_reboot (howto=260)
     at /home/svn/head/sys/kern/kern_shutdown.c:430
#2  0xffffffff80426521 in panic (fmt=Variable "fmt" is not available.
)
     at /home/svn/head/sys/kern/kern_shutdown.c:604
#3  0xffffffff8032c648 in pcib_grow_window (sc=0xfffffe0002603400,
     w=0xfffffe0002603498, type=3, start=0, end=4294967295, count=65536, 
flags=Variable "flags" is not available.

) at /home/svn/head/sys/dev/pci/pci_pci.c:1018
#4  0xffffffff8032c8f7 in pcib_alloc_resource (dev=0xfffffe00026f2600,
     child=0xfffffe0002eaf800, type=Variable "type" is not available.
)
     at /home/svn/head/sys/dev/pci/pci_pci.c:1090
#5  0xffffffff80325bdd in pci_alloc_resource (dev=0xfffffe000279bd00,
     child=0xfffffe0002eaf800, type=3, rid=0xffffff8000309688,
     start=2281701376, end=18446744073709551615, count=65536, flags=16384)
     at bus_if.h:263
#6  0xffffffff8031bd25 in cbb_alloc_resource (brdev=Variable "brdev" is 
not available.
) at bus_if.h:263
#7  0xffffffff80325d8e in pci_alloc_resource (dev=0xfffffe000279ed00,
     child=0xfffffe0002eaf800, type=3, rid=0xffffff8000309688, start=0,
     end=18446744073709551615, count=1, flags=16384) at bus_if.h:263
#8  0xffffffff80456f39 in bus_alloc_resource (dev=0xfffffe0002eaf800, 
type=3,
     rid=0xffffff8000309688, start=0, end=18446744073709551615, count=1,
     flags=12290) at bus_if.h:263
#9  0xffffffff802faa60 in cardbus_parse_cis (cbdev=0xfffffe000279ed00,
     child=0xfffffe0002eaf800, callbacks=0xffffff8000309af0,
     argp=0xfffffe0002e2d140) at bus.h:415
#10 0xffffffff802fb0c1 in cardbus_device_create (sc=0xfffffe00025d8030,
     devi=0xfffffe0002e2d000, parent=Variable "parent" is not available.
)
     at /home/svn/head/sys/dev/cardbus/cardbus_device.c:105
#11 0xffffffff802f9c4e in cardbus_attach_card (cbdev=0xfffffe000279ed00)
     at /home/svn/head/sys/dev/cardbus/cardbus.c:191
#12 0xffffffff8031ba44 in cbb_event_thread (arg=Variable "arg" is not 
available.
) at card_if.h:83
#13 0xffffffff803fb355 in fork_exit (
     callout=0xffffffff8031b660 <cbb_event_thread>, arg=0xfffffe0002599800,
     frame=0xffffff8000309c50) at /home/svn/head/sys/kern/kern_fork.c:920
#14 0xffffffff80666c4e in fork_trampoline ()
     at /home/svn/head/sys/amd64/amd64/exception.S:603



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