Re: [PATCH v2 net] net: dsa: sja1105: protect link replay helpers against NULL phylink instance

[patchwork-bot+netdevbpf]

Hello:

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

On Wed, 18 Feb 2026 18:05:51 +0200 you wrote:
> There is a crash when unbinding the sja1105 driver under special
> circumstances:
> 
> Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030
> Call trace:
> phylink_run_resolve_and_disable+0x10/0x90
> sja1105_static_config_reload+0xc0/0x410
> sja1105_vlan_filtering+0x100/0x140
> dsa_port_vlan_filtering+0x13c/0x368
> dsa_port_reset_vlan_filtering.isra.0+0xe8/0x198
> dsa_port_bridge_leave+0x130/0x248
> dsa_user_changeupper.part.0+0x74/0x158
> dsa_user_netdevice_event+0x50c/0xa50
> notifier_call_chain+0x78/0x148
> raw_notifier_call_chain+0x20/0x38
> call_netdevice_notifiers_info+0x58/0xa8
> __netdev_upper_dev_unlink+0xac/0x220
> netdev_upper_dev_unlink+0x38/0x70
> del_nbp+0x1a4/0x320
> br_del_if+0x3c/0xd8
> br_device_event+0xf8/0x2d8
> notifier_call_chain+0x78/0x148
> raw_notifier_call_chain+0x20/0x38
> call_netdevice_notifiers_info+0x58/0xa8
> unregister_netdevice_many_notify+0x314/0x848
> unregister_netdevice_queue+0xe8/0xf8
> dsa_user_destroy+0x50/0xa8
> dsa_port_teardown+0x80/0x98
> dsa_switch_teardown_ports+0x4c/0xb8
> dsa_switch_deinit+0x94/0xb8
> dsa_switch_put_tree+0x2c/0xc0
> dsa_unregister_switch+0x38/0x60
> sja1105_remove+0x24/0x40
> spi_remove+0x38/0x60
> device_remove+0x54/0x90
> device_release_driver_internal+0x1d4/0x230
> device_driver_detach+0x20/0x38
> unbind_store+0xbc/0xc8
> 
> [...]

Here is the summary with links:
  - [v2,net] net: dsa: sja1105: protect link replay helpers against NULL phylink instance
    https://git.kernel.org/netdev/net/c/bfd264fbbbca

You are awesome, thank you!
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