Re: [PATCH net] netdev-genl: ignore NETDEV_UNREGISTER rebroadcasts

[patchwork-bot+netdevbpf]

Hello:

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

On Mon, 26 Oct 2026 22:13:06 +0000 you wrote:
> netdev_wait_allrefs_any() re-sends NETDEV_UNREGISTER every second while
> it waits for the last references on a device to be dropped. By then
> netdev_run_todo() has already marked the device NETREG_UNREGISTERED and
> RTNL has been dropped at least once since the initial notification sent
> by unregister_netdevice_many_notify().
> 
> netdev_genl_netdevice_event() does not tell these rebroadcasts apart
> from the initial notification and sends a NETDEV_CMD_DEV_DEL_NTF
> multicast for each of them. At best this spams NETDEV_NLGRP_MGMT
> listeners with duplicate notifications; at worst the pernet state of
> the netns the device belongs to is already gone and the handler
> dereferences a NULL pointer.
> 
> [...]

Here is the summary with links:
  - [net] netdev-genl: ignore NETDEV_UNREGISTER rebroadcasts
    https://git.kernel.org/netdev/net/c/fd0909e963ed

You are awesome, thank you!
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