After a couple hours of use, I get this error on a linear RAID under 
2.6.12.2 using loop-AES w/AES-256 encrypted filesystem.

Anyone know what is wrong?

Filesystem "loop1": XFS internal error xfs_da_do_buf(2) at line 2271 of 
file fs/xfs/xfs_da_btree.c.  Caller 0xc025e807
  [<c025e3f0>] xfs_da_do_buf+0x500/0x860
  [<c025e807>] xfs_da_read_buf+0x57/0x60
  [<c025e807>] xfs_da_read_buf+0x57/0x60
  [<c03b70db>] __tcp_data_snd_check+0xcb/0xe0
  [<c03b6ffd>] tcp_new_space+0x8d/0xa0
  [<c03c0b55>] tcp_v4_rcv+0x585/0x810
  [<c025e807>] xfs_da_read_buf+0x57/0x60
  [<c0262224>] xfs_dir2_block_getdents+0xa4/0x330
  [<c0262224>] xfs_dir2_block_getdents+0xa4/0x330
  [<c03a51e0>] ip_local_deliver_finish+0x0/0x150
  [<c03a5061>] ip_rcv+0x391/0x510
  [<c02500f2>] xfs_bmap_last_offset+0xc2/0x120
  [<c03a5330>] ip_rcv_finish+0x0/0x290
  [<c0261570>] xfs_dir2_put_dirent64_direct+0x0/0xc0
  [<c02614a2>] xfs_dir2_isblock+0x32/0x90
  [<c0261570>] xfs_dir2_put_dirent64_direct+0x0/0xc0
  [<c0260d11>] xfs_dir2_getdents+0xa1/0x150
  [<c0261570>] xfs_dir2_put_dirent64_direct+0x0/0xc0
  [<c029b365>] xfs_readdir+0x75/0xc0
  [<c02a36de>] linvfs_readdir+0x10e/0x270
  [<c03737ba>] net_rx_action+0x6a/0xf0
  [<c016aaf7>] vfs_readdir+0x77/0x90
  [<c016adf0>] filldir64+0x0/0x110
  [<c016af6f>] sys_getdents64+0x6f/0xb2
  [<c016adf0>] filldir64+0x0/0x110
  [<c0102be1>] syscall_call+0x7/0xb

# lsmod
Module                  Size  Used by

I am not using any special modules.
Configuration file attached.