panic: Most recently used by AD driver

The following is a hand typed panic from my consol:


pccard1: Allocation failed for cfe 0
ata2: <IBM microdrive> at port 0x140-0x14f irq 11 function 0 config 1 on
pccard1
ata2: [MPSAFE]
GEOM: create disk ad4 dp=0xc2461c60
ad4: 10277MB <IBM-DSCM-11000> [2088/16/63] at ata2-master PIO2
GEOM: destroy disk ad4 dp=0xc2461c60
ad4: WARNING - removed from configuration
pccard1: Allocated resource not found, 4 1 140 10
ata2: detached
Memory modified after free 0xc2461c00(252) val=c29af600 _at_ 0xc2461c34
panic: Most recently used by AD driver

cpuid = 0;
Debugger("panic")
Stopped at		Debugger+0x55:	xchgl	%ebx,in_Debugger.0
db> where
[...]


I am not going to leave the debugger until I hopefully get a reply with
some further instructions. I have seen this error in the past but failled
to get a good vmcore for gdb.

The situation is this: I am developing freebsd images for a Net4501 on a
dell laptop (cpi P2), and I am inserting, and ejecting various CF media
(IBM micro drives, and typical San Disk's). At the time of the panic I had
ejected my Microdrive aproxamatly 20 to 30 minutes prior from the laptop's
pcmcia slot. The laptop was also working as a remote serrial term for the
soekris board, but that likely has nothing to do with the panic (just
covering my bases here).

This is a Kernel/world from the day after 5.2-beta appeared in cvs.

Somebody else working with CF media see this?

 __  __           _
|  \/  | __ _ ___| |_ __ _
| |\/| |/ _` / __| __/ _` |
| |  | | (_| \__ \ || (_| |
|_|  |_|\__,_|___/\__\__,_|

unzip ; strip ; touch ; finger ; mount ; fsck ; more ; yes ; umount ; sleep


masta_at_wifibsd.org
http://wifibsd.org