[ovs-dev] [PATCH] datapath: Add NULL check for mask pinter.

[Andy Zhou]

The fix looks good.  It would be good to mention that concurrent
accessing ma->count
without proper locking is the actual root cause in the commit message.

It would help if we later make more proper fix later on and reference
back to this commit.

One minor thing: In ovs_flow_tbl_lookup_stats() the 'likely' was dropped.

Acked-by: Andy Zhou <azhou at nicira.com>