From: Ido Schimmel <idosch@nvidia.com>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>,
netdev@vger.kernel.org, eric.dumazet@gmail.com,
Nikolay Aleksandrov <razor@blackwall.org>
Subject: Re: [PATCH net-next] net: bridge: remove stale rcu_barrier() in br_multicast_dev_del()
Date: Tue, 19 May 2026 14:01:55 +0300 [thread overview]
Message-ID: <20260519110155.GA415776@shredder> (raw)
In-Reply-To: <20260519095540.2643318-1-edumazet@google.com>
On Tue, May 19, 2026 at 09:55:40AM +0000, Eric Dumazet wrote:
> This rcu_barrier() came from a time call_rcu() calls were used in
> net/bridge/br_multicast.c.
>
> Now kfree_rcu() is there, we can remove this problematic rcu_barrier()
> which causes extreme RTNL pressure in many syzbot reports.
[...]
> Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
next prev parent reply other threads:[~2026-05-19 11:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 9:55 [PATCH net-next] net: bridge: remove stale rcu_barrier() in br_multicast_dev_del() Eric Dumazet
2026-05-19 10:52 ` Jakub Sitnicki
2026-05-19 11:01 ` Ido Schimmel [this message]
2026-05-19 13:06 ` Nikolay Aleksandrov
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