5.2-BETA usb backtrace

Howdy list,

Has anyone seen this? It happened while I was writing data
to my external USB drive on a stock 5.2-BETA system (installed
from ISO image). Non fatal, and no DDB prompt, but my system
hung shortly after. Not sure if the hang and the below message
are related or not...


usb_block_allocmem(0,10000,1,c39e423c,c3a59f20) at usb_block_allocmem+0x11a
usb_allocmem(c3a5d000,10000,0,c39e423c,d2a3ebe4) at usb_allocmem+0x4e
uhci_allocm(c3a5d000,c39e423c,10000,c0785a80,0) at uhci_allocm+0x27
usbd_transfer(c39e4200,c39f7600,c39e4300,d0572000,10000) at usbd_transfer+0x59
umass_setup_transfer(c39e4300,c39f7600,d0572000,10000,4) at umass_setup_transfer
+0x4f
umass_bbb_state(c39e4600,c39e4300,0,0,c39e463c) at umass_bbb_state+0x1c2
usb_transfer_complete(c39e4600,d2a3ec88,c0530aab,1f,c39f7680) at usb_transfer_co
mplete+0x12a
uhci_idone(c39e466c,c39e466c,c3a5d000,d2a3ecb4,c04b97ec) at uhci_idone+0x135
uhci_check_intr(c3a5d000,c39e466c,1,c3a5d000,d2a3ecc0) at uhci_check_intr+0x96
uhci_softintr(c3a5d000,d2a3ecdc,c04b97a2,c3a5d000,c0739bc0) at uhci_softintr+0x2
c
usb_schedsoftintr(c3a5d000,c0739bc0,c3a1eb80,c19eb880,c19efc80) at usb_schedsoft
intr+0x12
uhci_intr1(c3a5d000,d2a3ed10,c050c2a2,c3a5d000,0) at uhci_intr1+0x1a2
uhci_intr(c3a5d000,0,c06da0ca,21f,c19f4e20) at uhci_intr+0x2a
ithread_loop(c19eb880,d2a3ed48,c06d9f44,311,0) at ithread_loop+0x192
fork_exit(c050c110,c19eb880,d2a3ed48) at fork_exit+0xb4
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xd2a3ed7c, ebp = 0 ---


-- 
Jesse Guardiani, Systems Administrator
WingNET Internet Services,
P.O. Box 2605 // Cleveland, TN 37320-2605
423-559-LINK (v)  423-559-5145 (f)
http://www.wingnet.net