Hi all,
after meshing two MIR4A routers, I'm seeing the following kernel trace on boot:
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.288365] ------------[ cut here ]------------
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.293068] WARNING: CPU: 0 PID: 720 at net/core/flow_dissector.c:960 __skb_flow_dissect+0x3b0/0x16bc
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.302339] Modules linked in: pppoe ppp_async iptable_nat xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conn
track mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 iptable_mangle iptable_filter ipt_REJECT ip_tables cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG x_tables slhc nf_reject_ipv4 nf_l
og_ipv4 nf_log_common nf_defrag_ipv4 crc_ccitt compat leds_gpio gpio_button_hotplug
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.347415] CPU: 0 PID: 720 Comm: kworker/u9:1 Not tainted 5.4.132 #0
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.353869] Workqueue: napi_workq napi_workfn
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.358208] Stack : 805d36e4 86d11a3c 80650000 80690000 86cf5c00 805e5644 8040f5d0 00000009
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.366528] 86c63150 872d7218 00000000 8007e048 00000000 00000001 86d119f8 4dbbc5ed
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.374847] 00000000 00000000 00000000 00000000 716b726f 0000011b 6f775f69 6e666b72
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.383165] 00000000 00000001 00000000 0005664d 00000000 806b0000 00000000 8040f5d0
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.391483] 00000009 86c63150 872d7218 00000000 00000000 8034f84c 00000000 807f0000
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.399801] ...
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.402234] Call Trace:
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.404696] [<8000b64c>] show_stack+0x30/0x100
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.409133] [<8052e958>] dump_stack+0xa4/0xdc
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.413484] [<8002c140>] __warn+0xc0/0x10c
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.417563] [<8002c1e8>] warn_slowpath_fmt+0x5c/0xac
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.422523] [<8040f5d0>] __skb_flow_dissect+0x3b0/0x16bc
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.427826] [<80410b8c>] __skb_get_hash+0x7c/0x258
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.432741] [<86f33184>] ieee80211_unreserve_tid+0x720/0x1890 [mac80211]
Wed Jul 28 11:26:40 2021 kern.warn kernel: [ 25.439699] ---[ end trace 7aaf0e496086288b ]---
This does not happen when the 802.11s mesh is commented out, so it's definately related.
The only other mention of this that I found is here:
The poster also used 802.11s.
Can anyone with a bit of insight tell me how bad this is?
The mesh at least appears to be working.