Re: [PATCH net] net/mlx5: E-Switch, prevent mc_list repopulation during vport disable

[patchwork-bot+netdevbpf]

Hello:

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

On Wed, 2 Sep 2026 22:38:54 +0300 you wrote:
> From: Lama Kayal <lkayal@xxxxxxxxxx>
> 
> In mlx5_esw_vport_disable(), move esw_apply_vport_rx_mode() ahead
> of esw_vport_change_handle_locked() so vport->allmulti_rule is
> NULL before the change handler observes it.
> 
> During FW-fatal recovery the disable runs while dev->state ==
> INTERNAL_ERROR. The promisc query inside esw_update_vport_rx_mode()
> fails and returns early, leaving vport->allmulti_rule intact, so
> esw_update_vport_mc_promisc() runs and adds MLX5_ACTION_ADD entries
> to vport->mc_list whose flow rules are then installed in the FDB
> by esw_add_mc_addr(). esw_destroy_legacy_table() tears down the
> FDB with those refs still held, corrupting the sub-tree and
> leaving dangling flow_rule pointers in vport->mc_list.
> 
> [...]

Here is the summary with links:
  - [net] net/mlx5: E-Switch, prevent mc_list repopulation during vport disable
    https://git.kernel.org/netdev/net/c/c0c6f4ba8a37

You are awesome, thank you!
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