From: Eric Dumazet <eric.duma...@gmail.com>
Date: Thu, 17 Mar 2016 17:23:36 -0700
> From: Eric Dumazet <eduma...@google.com>
>
> bond_get_stats() can be called from rtnetlink (with RTNL held)
> or from /proc/net/dev seq handler (with RCU held)
>
> The logic added in commit 5f0c5f73e5ef ("bonding: make global bonding
> stats more reliable") kind of assumed only one cpu could run there.
>
> If multiple threads are reading /proc/net/dev, stats can be really
> messed up after a while.
>
> A second problem is that some fields are 32bit, so we need to properly
> handle the wrap around problem.
>
> Given that RTNL is not always held, we need to use
> bond_for_each_slave_rcu().
>
> Fixes: 5f0c5f73e5ef ("bonding: make global bonding stats more reliable")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
Applied and queued up for -stable, thanks Eric.
