[Lustre-discuss] LBUG on lustre 1.8.0

[Larry]

We had a LBUG several days ago on our lustre 1.8.0. One OSS reported

kernel: LustreError:
24669:0:(service.c:1311:ptlrpc_server_handle_request())
ASSERTION(atomic_read(&(export)->exp_refcount) < 0x5a5a5a) failed
kernel: LustreError:
24669:0:(service.c:1311:ptlrpc_server_handle_request()) LBUG
kernel: Lustre: 24669:0:(linux-debug.c:222:libcfs_debug_dumpstack())
showing stack for process 24669
......

I google for this, and find little information about it. It seems to
be a race condition on OSS, right? Should I open a bugzilla for this
LBUG?
Thanks.