Latest Kernel 5.4.52 has some mvneta commits that cause a kernel warn:
[ 18.963513] WARNING: CPU: 1 PID: 2474 at drivers/net/ethernet/marvell/mvneta.c:3490 0xc0546874
[ 18.975570] Modules linked in: pppoe ppp_async pppox ppp_generic ipt_REJECT xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_iprange xt_hl xt_helper xt_hashlimit xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY wireguard slhc sch_cake nfnetlink_cttimeout nf_reject_ipv4 nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack_netlink nf_conncount iptable_raw iptable_nat iptable_mangle iptable_filter ipt_rpfilter ipt_ECN ip6table_raw ip6t_rpfilter ip_tables crc_ccitt act_ctinfo act_connmark sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred mwlwifi mac80211 cfg80211 compat ledtrig_heartbeat cryptodev xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface
[ 18.975650] ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_NPT ip6t_rt ip6t_mh ip6t_ipv6header ip6t_hbh ip6t_frag ip6t_eui64 ip6t_ah nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb ip6_udp_tunnel udp_tunnel tun gpio_button_hotplug
[ 19.111306] CPU: 0 PID: 2474 Comm: netifd Not tainted 5.4.52 #0
[ 19.117262] Hardware name: Marvell Armada 380/385 (Device Tree)
[ 19.123217] Function entered at [<c010f528>] from [<c010b4f4>]
[ 19.129079] Function entered at [<c010b4f4>] from [<c0733994>]
[ 19.134942] Function entered at [<c0733994>] from [<c012b32c>]
[ 19.140803] Function entered at [<c012b32c>] from [<c012b3ac>]
[ 19.146665] Function entered at [<c012b3ac>] from [<c0546874>]
[ 19.152527] Function entered at [<c0546874>] from [<c05469ec>]
[ 19.158388] Function entered at [<c05469ec>] from [<c05fdca8>]
[ 19.164250] Function entered at [<c05fdca8>] from [<c05fe0ac>]
[ 19.170111] Function entered at [<c05fe0ac>] from [<c05fe124>]
[ 19.175972] Function entered at [<c05fe124>] from [<c06254e4>]
[ 19.181834] Function entered at [<c06254e4>] from [<c0625a44>]
[ 19.187695] Function entered at [<c0625a44>] from [<c05d6f4c>]
[ 19.193557] Function entered at [<c05d6f4c>] from [<c0244910>]
[ 19.199418] Function entered at [<c0244910>] from [<c0244e78>]
[ 19.205280] Function entered at [<c0244e78>] from [<c0101000>]
[ 19.211141] Exception stack(0xdc95bfa8 to 0xdc95bff0)
[ 19.216220] bfa0: bec57934 00000000 00000008 00008914 bec57934 bec57928
[ 19.224441] bfc0: bec57934 00000000 00000001 00000036 094551d0 b63baf79 b63baf54 08b1dcf0
[ 19.232660] bfe0: 08b1dd0c bec57910 08af09a0 b6407938
[ 19.238355] ---[ end trace fb714792d0b3bb92 ]---
But ethernet still works fine...