usb lockup

[Andrew Atrens]

more info on my usb lockup -

Here's some output from ddb/trace on the 'cp' process

mi_switch(21,d494dde0,cc0f4a40,d4b61a24,c01c6736) at mi_switch+0xdb
tsleep(c25d2110,0,c039dcc1,0,2010022) at tsleep+0x1a2
acquire(c25d2110,2000020,600,c25d20e8,68cc80) at acquire+0x97
lockmgr(c25d2110,2010022,c0459f4,cc0f4a40,d4b61b40) at lockmgr+0x2e7
getblk(d4b7d280,131,1000,0,0) at getblk+0x11f
breadn(d4b7d280,131,1000,d4b61b38,d4b61b3c) at breadn+0x32
msdosfs_read(d4b61b64,cc0f4a40,10000,3,0) at msdos_read+0xec
. ..

this lockup happens about 10-30 seconds after starting the cp (transferring
approx 60MB of data ... at 1 MB/s (roughly).

Let me know what data I should collect... grabbing everything is a bit
painful as this is all hand-transcribed.

Cheers,

Andrew.