On Thu, Nov 01, 2018 at 04:58:41PM +0300, Ilya Maximets wrote:
> Datapath implementation of 'flow_flush()' could use cmaps.
> dpif-netdev actively uses them to store flow tables and the polling
> threads. Flushing flows while in a quiescent state may lead to
> wrong memory accesses because implementaion of concurrent hash maps
> relies on the rcu protected pointers which could float away.
> 
> CC: Alex Wang <[email protected]>
> Fixes: 1f8675481e8c ("ofproto-dpif-upcall: Fix ovs-vswitchd crash.")
> Signed-off-by: Ilya Maximets <[email protected]>

I think this patch becomes unnecessary if my logic for the first one is
correct.
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