I have installed latest Openwrt 19.07.6 and i see the attached warnings quite often. I never seen such behaviours in the previous versions.
can anyone explain? should I rollback to the previous version?
[15616.115907] ------------[ cut here ]------------
[15616.120508] WARNING: CPU: 3 PID: 7410 at backports-4.19.161-1/net/mac80211/tx.c:946 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[15616.131552] Modules linked in: pppoe ppp_async rndis_host pppox ppp_generic nf_conntrack_ipv6 mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 cdc_ether 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_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY usbnet slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat sch_cake nf_conntrack tcp_bbr sch_tbf sch_ingress
[15616.202519] sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb mii leds_gpio xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
[15616.233886] CPU: 3 PID: 7410 Comm: kworker/u8:2 Tainted: G W 4.14.215 #0
[15616.241693] Workqueue: phy0 0x8ec9679c [mac80211@8ec80000+0x6cd40]
[15616.247843] Stack : 00000000 00000000 804d8568 8fd3fa74 00000000 00000000 00000000 00000000
[15616.256171] 00000000 00000000 00000000 00000000 00000000 00000001 8fd3fa30 ac07f5ce
[15616.264499] 8fd3fac8 00000000 00000000 00001d38 00000038 8049e0f8 00000007 00000000
[15616.272826] 00000000 80550000 0003b01d 00000000 8fd3fa10 00000000 00000000 8ece8074
[15616.281150] 8ecae638 000003b2 0000001a 8cfd0c50 00000001 802ae4f0 0000000c 806b000c
[15616.289478] ...
[15616.291913] Call Trace:
[15616.291967] [<8049e0f8>] 0x8049e0f8
[15616.297875] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[15616.303767] [<802ae4f0>] 0x802ae4f0
[15616.307267] [<8000c1a0>] 0x8000c1a0
[15616.310737] [<8000c1a8>] 0x8000c1a8
[15616.314206] [<80486f44>] 0x80486f44
[15616.317676] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[15616.323579] [<80072ce4>] 0x80072ce4
[15616.327055] [<8002e798>] 0x8002e798
[15616.330544] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[15616.336453] [<8002e880>] 0x8002e880
[15616.339921] [<8015000e>] 0x8015000e
[15616.343397] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[15616.349293] [<8015000e>] 0x8015000e
[15616.352817] [<8ecb046c>] 0x8ecb046c [mac80211@8ec80000+0x6cd40]
[15616.358752] [<8f7ccccc>] 0x8f7ccccc [mt76@8f7c8000+0x79e0]
[15616.364219] [<803495ac>] 0x803495ac
[15616.367696] [<8ecaba14>] 0x8ecaba14 [mac80211@8ec80000+0x6cd40]
[15616.373599] [<8f7cd3c0>] 0x8f7cd3c0 [mt76@8f7c8000+0x79e0]
[15616.379062] [<80032ba4>] 0x80032ba4
[15616.382535] [<8f7d35b4>] 0x8f7d35b4 [mt7603e@8f7d0000+0x9100]
[15616.388253] [<804a4ef8>] 0x804a4ef8
[15616.391738] [<80032f28>] 0x80032f28
[15616.395212] [<8ec9096c>] 0x8ec9096c [mac80211@8ec80000+0x6cd40]
[15616.401105] [<80033000>] 0x80033000
[15616.404589] [<8ec90a54>] 0x8ec90a54 [mac80211@8ec80000+0x6cd40]
[15616.410508] [<8ec91b74>] 0x8ec91b74 [mac80211@8ec80000+0x6cd40]
[15616.416425] [<8ec968c4>] 0x8ec968c4 [mac80211@8ec80000+0x6cd40]
[15616.422324] [<804a0360>] 0x804a0360
[15616.425842] [<80046014>] 0x80046014
[15616.429347] [<8004650c>] 0x8004650c
[15616.432813] [<80067ad0>] 0x80067ad0
[15616.436295] [<800461bc>] 0x800461bc
[15616.439767] [<8004c108>] 0x8004c108
[15616.443239] [<8004bfd8>] 0x8004bfd8
[15616.446715] [<8004bfd8>] 0x8004bfd8
[15616.450188] [<8004bfd8>] 0x8004bfd8
[15616.453657] [<80006f78>] 0x80006f78
[15616.457130]
[15616.458882] ---[ end trace 7d56c42ca5d7c698 ]---
[16682.148918] ------------[ cut here ]------------
[16682.153598] WARNING: CPU: 2 PID: 7485 at backports-4.19.161-1/net/mac80211/tx.c:946 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[16682.164702] Modules linked in: pppoe ppp_async rndis_host pppox ppp_generic nf_conntrack_ipv6 mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 cdc_ether 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_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY usbnet slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat sch_cake nf_conntrack tcp_bbr sch_tbf sch_ingress
[16682.235922] sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb mii leds_gpio xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
[16682.267474] CPU: 2 PID: 7485 Comm: kworker/u8:0 Tainted: G W 4.14.215 #0
[16682.275332] Workqueue: phy1 0x8ec9679c [mac80211@8ec80000+0x6cd40]
[16682.281509] Stack : 00000000 00000000 804d8568 8fc73a4c 00000000 00000000 00000000 00000000
[16682.289872] 00000000 00000000 00000000 00000000 00000000 00000001 8fc73a08 ac07f5ce
[16682.298239] 8fc73aa0 00000000 00000000 00002d20 00000038 8049e0f8 00000007 00000000
[16682.306610] 00000000 80550000 00043384 00000000 8fc739e8 00000000 00000000 8ece8074
[16682.314980] 8ecae638 000003b2 0000001a cb0a8daf 00000001 802ae4f0 00000008 806b0008
[16682.323354] ...
[16682.325815] Call Trace:
[16682.325944] [<8049e0f8>] 0x8049e0f8
[16682.331931] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[16682.337856] [<802ae4f0>] 0x802ae4f0
[16682.341396] [<8000c1a0>] 0x8000c1a0
[16682.344886] [<8000c1a8>] 0x8000c1a8
[16682.348370] [<80486f44>] 0x80486f44
[16682.351858] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[16682.357763] [<80072ce4>] 0x80072ce4
[16682.361256] [<8002e798>] 0x8002e798
[16682.364745] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[16682.370710] [<8002e880>] 0x8002e880
[16682.374202] [<8ecae638>] 0x8ecae638 [mac80211@8ec80000+0x6cd40]
[16682.380150] [<8ecb046c>] 0x8ecb046c [mac80211@8ec80000+0x6cd40]
[16682.386181] [<8f7ccccc>] 0x8f7ccccc [mt76@8f7c8000+0x79e0]
[16682.391700] [<8f7cd010>] 0x8f7cd010 [mt76@8f7c8000+0x79e0]
[16682.397174] [<8ed14c10>] 0x8ed14c10 [mt76x02_lib@8ed10000+0x9700]
[16682.403264] [<80032ba4>] 0x80032ba4
[16682.406756] [<804a4ef8>] 0x804a4ef8
[16682.410259] [<80032f28>] 0x80032f28
[16682.413746] [<8ec9096c>] 0x8ec9096c [mac80211@8ec80000+0x6cd40]
[16682.419652] [<80033000>] 0x80033000
[16682.423140] [<8ec90a54>] 0x8ec90a54 [mac80211@8ec80000+0x6cd40]
[16682.429048] [<8ec917bc>] 0x8ec917bc [mac80211@8ec80000+0x6cd40]
[16682.434999] [<8ec91b74>] 0x8ec91b74 [mac80211@8ec80000+0x6cd40]
[16682.440897] [<800886a8>] 0x800886a8
[16682.444405] [<8ec968c4>] 0x8ec968c4 [mac80211@8ec80000+0x6cd40]
[16682.450337] [<804a0360>] 0x804a0360
[16682.453844] [<80046014>] 0x80046014
[16682.457375] [<8004650c>] 0x8004650c
[16682.460851] [<80067ad0>] 0x80067ad0
[16682.464366] [<800461bc>] 0x800461bc
[16682.467864] [<8004c108>] 0x8004c108
[16682.471342] [<8004bfd8>] 0x8004bfd8
[16682.474827] [<8004bfd8>] 0x8004bfd8
[16682.478319] [<8004bfd8>] 0x8004bfd8
[16682.481793] [<80006f78>] 0x80006f78
[16682.485277]
[16682.486963] ---[ end trace 7d56c42ca5d7c699 ]---`