LTP on ltp-lx60-dc232b config:

[   99.620000] Caught multihit exception: sig: 9 [#1]
[   99.620000] PREEMPT 
[   99.620000] a00: a0003ed8 3ffe8aa0 00000052 00001000 004005a8 20006028 200027fc 3ffe8aa0
[   99.620000] a08: a000380e 00000000 00000000 3ffe8ab0 20006028 004005a8 00000000 3ffe8a30
[   99.620000] pc: 200027fc, ps: 00060570, depc: 00000011, excvaddr: 200027fc
[   99.620000] lbeg: 2003d92d, lend: 2003d94f lcount: ffffffff, sar: 00000002
[   99.620000] wb: 00000003, ws: 00000008, wmask: 00000001, syscall: -1
[   99.620000] Disabling lock debugging due to kernel taint

Analysis: http://lists.linux-xtensa.org/pipermail/linux-xtensa/Week-of-Mon-20130401/000918.html

Followups: http://lists.linux-xtensa.org/pipermail/linux-xtensa/Week-of-Mon-20130408/thread.html#919