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Subject: Re: [PATCH net] net: openvswitch: Avoid releasing netdev before
 teardown
 completes
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <177396660480.1861152.8680277135332409815.git-patchwork-notify@kernel.org>
Date: Fri, 20 Mar 2026 00:30:04 +0000
References: <20260318155554.1133405-1-toke@redhat.com>
In-Reply-To: <20260318155554.1133405-1-toke@redhat.com>
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Cc: aconole@redhat.com, echaudro@redhat.com, i.maximets@ovn.org,
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 pabeni@redhat.com, mhou@redhat.com, davem@davemloft.net, edumazet@google.com,
 kuba@kernel.org, horms@kernel.org, netdev@vger.kernel.org,
 dev@openvswitch.org, linux-rt-devel@lists.linux.dev

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 18 Mar 2026 16:55:51 +0100 you wrote:
> The patch cited in the Fixes tag below changed the teardown code for
> OVS ports to no longer unconditionally take the RTNL. After this change,
> the netdev_destroy() callback can proceed immediately to the call_rcu()
> invocation if the IFF_OVS_DATAPATH flag is already cleared on the
> netdev.
> 
> The ovs_netdev_detach_dev() function clears the flag before completing
> the unregistration, and if it gets preempted after clearing the flag (as
> can happen on an -rt kernel), netdev_destroy() can complete and the
> device can be freed before the unregistration completes. This leads to a
> splat like:
> 
> [...]

Here is the summary with links:
  - [net] net: openvswitch: Avoid releasing netdev before teardown completes
    https://git.kernel.org/netdev/net/c/7c770dadfda5

You are awesome, thank you!
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