AX-88U locking up after a week or 2: invalid token 0x04758000 freed / ERR: rdpa_cpu_tx_port_enet_lan#213

[Pergola Fabio]

Hi, running a new ax88u router here, with merlin 3004.388.2, also tried full factory reset
After a week or 2 i start noticing that wifi devices are starting to drop, they reconnect ...
A few hours later i see below in log, and the router is completely freezed, no wifi/lan connection is possible anymore, i need to restart it

what is happening? is this an memory issue/leak ?

Nov 28 12:55:04 wlceventd: wlceventd_proc_event(685): eth6: Auth D4:D2:D6:F5:FE:5A, status: Successful (0), rssi:0
Nov 28 12:55:04 wlceventd: wlceventd_proc_event(722): eth6: Assoc D4:D2:D6:F5:FE:5A, status: Successful (0), rssi:-82
Nov 28 12:55:04 hostapd: eth6: STA d4:d2:d6:f5:fe:5a IEEE 802.11: associated
Nov 28 12:55:04 kernel: CFG80211-ERROR) wl_cfg80211_change_station : WLC_SCB_AUTHORIZE sta_flags_mask not set
Nov 28 12:55:04 hostapd: eth6: STA d4:d2:d6:f5:fe:5a RADIUS: starting accounting session 7714E771AEAC6D9D
Nov 28 12:55:04 hostapd: eth6: STA d4:d2:d6:f5:fe:5a WPA: pairwise key handshake completed (RSN)
.....
Nov 28 12:55:08 kernel: FPM Pool 0: invalid token 0x04758000 freed
Nov 28 12:55:08 kernel: FPM Pool 0: ISR timer is enabled. There could be multiple occurrences of the reported issue
Nov 28 12:55:08 kernel: ERR: rdpa_cpu_tx_port_enet_lan#213: rdpa_cpu_tx_port_enet_lan failed. rdd_rc=120 tx_rdd_error_count=1

I also see that the ports are going down too, where my ac88u nodes are connected with...

example:

Nov 28 13:10:14 kernel: eth3 (Ext switch port: 2) (Logical Port: 10) (phyId: a) Link UP at 1000 mbps full duplex
Nov 28 13:10:14 kernel: br0: port 3(eth3) entered forwarding state
Nov 28 13:10:14 kernel: br0: port 3(eth3) entered forwarding state
Nov 28 13:10:14 kernel: br1: port 4(eth3.501) entered listening state
Nov 28 13:10:14 kernel: br1: port 4(eth3.501) entered listening state
Nov 28 13:10:17 kernel: eth3 (Ext switch port: 2) (Logical Port: 10) (phyId: a) Link DOWN.
Nov 28 13:10:17 kernel: br0: port 3(eth3) entered disabled state
Nov 28 13:10:17 kernel: br1: port 4(eth3.501) entered disabled state
Nov 28 13:10:19 kernel: eth3 (Ext switch port: 2) (Logical Port: 10) (phyId: a) Link UP at 1000 mbps full duplex