[ Send your reply Cc: to me, i'm not subscribed. ]

Hello,

I'm working on a backup server with 4 sata drivers, using software 
raid.Initially,
two arrays: A mirror for the root partition and a linear one to store 
the backup.
I'm planning to use a second linear and put a mirror on top of both 
linear mirrors,
but it's out of scope here.Note that the mdadm, lspci, dmesg, df+mount 
output and
kernel config are attached.

I'm running a simple rsync server (with only one module) on this 
machine.Some
minutes after start the rsync clients (3 or 4 at the same time), with 
the server running
fine (nothing really bad on vmstat output) it freezes with a kernel 
panic.I've missed
the output but i'll post it asap.Today i've tested it two times, at the 
first the kernel panic
and on the second a "kernel BUG at fs/xfs/support/debug.c:106!".The 
first one is related
with xfs too.The full "kernel bug" output is at 'backup.2ndpanic' file 
attached.

FYI, i've tried reproduce this bug with dd (using if=/dev/zero) without 
success.I guess that
it isn't a memory problem, i've tested it too.

Let me known if i'm missing something or if it's really a bug on xfs, 
libata or software
raid code.

Thanks,
Gustavo Franco
p.s: If you found a A4 on your bus describing a kernel panic, post it 
here.I lost it there. :)