Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Tue, 24 Mar 2026 09:36:01 +0100 you wrote:

If the gmac0 is disabled, the precheck for a valid ingress device will
cause a NULL pointer deref and crash the system. This happens because
eth->netdev[0] will be NULL but the code will directly try to access
netdev_ops.

Instead of just checking for the first net_device, it must be checked if
any of the mtk_eth net_devices is matching the netdev_ops of the ingress
device.

[...]

Here is the summary with links:
  - [net] net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled
    https://git.kernel.org/netdev/net/c/976ff48c2ac6

You are awesome, thank you!
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