[bug report] Potential order bug in 'drivers/net/can/vxcan.c', primarily in 'vxcan_dellink()'

[Ginger]

Dear Linux kernel maintainers,

My research-based static analyzer found a potential order bug within
the ' drivers/net/can' subsystem, more specifically, in '
drivers/net/can/vxcan.c'.

Kernel version: long-term kernel v6.18.9

Potential issue:
T0:
vxcan_dellink
    --> RCU_INIT_POINTER(priv->peer, NULL);
    --> unregister_netdevice_queue(dev, head);

In T0, the priv->peer field is nullified before the device is
unregistered from the kernel in 'unregister_netdevice_queue()'.
Considering that many other kernel functions rely on the existence of
the netdev and dereferences 'priv->peer', e.g., vxcan_open() and
vxcan_xmit(), it is possible to cause null pointer deref in concurrent
executions.

Thank you for your time and consideration.

Sincerely,
Ginger