March 15 Current snapshot is panic'ing in DELL PE1850 & PE2850 servers

[Muthu_T at Dell.com]

All,

  Today I tried to test the March 15 FreeBSD 6.0-Current.
While booting it panic'ed with following message.
(Handwritten message, no serial console is available)

<snip>
Acd0: CDROM <TEAC CD-ROM CD-224E/K.9A> at ata0-master UDMA33
Ata2-master: FAILURE - SETFEATURES SET TRANSFER MODE
status=41<READY,ERROR> error=4<ABORTED>
Ata2-slave: FAILURE - SETFEATURES SET TRANSFER MODE
status=41<READY,ERROR> error=4<ABORTED>

Memory modified after free 0xffffff00b8cf5800(248) val=b9281810 @
0xffffff00b8cf5830

panic: Most recently used by AFD driver

cpuid = 0
KDB: enter: panic
[thread pid 0 tid 0]
Stopped at kdb_enter+0x2f: nop
db> trace
Tracing pid 0 tid 0 td 0xfffff
kdb_enter() at kdb_enter+0x2f
panic() at panic+0x249
mtrash_ctor() at mtrash_ctor+0x78
uma_zalloc_arg() at uma_zalloc_arg+0x43f
malloc() at ...
g_post_event_x() at ... 
g_post_even() at ...
acd_attach() at ... 
ata_boot_attach() at ...
run_interrrupt_driven_config_hooks() at ...
mi_startup() at ...
btext() at ...

</snip>

Any idea?

Is this fixed via Coverity or it is new?

If any other latest snapshot is available to try?

Thanks.
--T. Muthu Mohan