Re: [PATCH net-next] net: bridge: switchdev: fix incorrect use of FDB flags when picking the dst device

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Mon,  2 Aug 2021 14:36:33 +0300 you wrote:

Nikolay points out that it is incorrect to assume that it is impossible
to have an fdb entry with fdb->dst == NULL and the BR_FDB_LOCAL bit in
fdb->flags not set. This is because there are reader-side places that
test_bit(BR_FDB_LOCAL, &fdb->flags) without the br->hash_lock, and if
the updating of the FDB entry happens on another CPU, there are no
memory barriers at writer or reader side which would ensure that the
reader sees the updates to both fdb->flags and fdb->dst in the same
order, i.e. the reader will not see an inconsistent FDB entry.

[...]

Here is the summary with links:
  - [net-next] net: bridge: switchdev: fix incorrect use of FDB flags when picking the dst device
    https://git.kernel.org/netdev/net-next/c/2e19bb35ce15

You are awesome, thank you!
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