- Status Unconfirmed
- Percent Complete
- Task Type Bug Report
- Category Kernel
- Assigned To No-one
- Operating System All
- Severity Low
- Priority Very Low
- Reported Version Trunk
- Due in Version Undecided
-
Due Date
Undecided
- Private
FS#3459 - 802.11s mesh kernel trace at net/core/flow_dissector.c:958 __skb_flow_dissect+0x2c0/0x149c
reproduce the problem:
1. use build from master branch at kernel version 5.4.72
2. set wireless interface to 802.11s and establish a connection to another mesh point
The link is still good after this, but the impact on performance is unknown.
[ 44.133721] ------------[ cut here ]------------ [ 44.138481] WARNING: CPU: 0 PID: 0 at net/core/flow_dissector.c:958 __skb_flow_dissect+0x2c0/0x149c [ 44.147605] Modules linked in: ath9k ath9k_common pppoe ppp_async iptable_nat ath9k_hw ath 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_conntrack_rtcache nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 gpio_button_hotplug [ 44.201117] CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.72 #0 [ 44.206914] Stack : 80650000 805ee988 00000000 00000000 805edb58 81c0bc3c 806240fc 80623ce3 [ 44.215337] 80590b9c 00000000 807832d8 81788d44 80d0f418 00000001 81c0bbf0 2470403f [ 44.223761] 00000000 00000000 807b0000 000000c4 61696e74 00000000 2e342e37 32202330 [ 44.232191] 000000c4 71e00000 00000000 0003119d 00000000 00000009 00000000 8039f3b0 [ 44.240618] 00000009 81788d44 80d0f418 80620000 00000000 802feaa4 00000000 80780000 [ 44.249040] ... [ 44.251515] Call Trace: [ 44.254014] [<80069934>] show_stack+0x30/0x100 [ 44.258510] [<80082564>] __warn+0xc0/0x10c [ 44.262647] [<8008260c>] warn_slowpath_fmt+0x5c/0xac [ 44.267666] [<8039f3b0>] __skb_flow_dissect+0x2c0/0x149c [ 44.273027] [<803a0870>] __skb_get_hash+0x7c/0x284 [ 44.278026] [<81731f08>] ieee80211_reserve_tid+0x4f0/0x1188 [mac80211] [ 44.284682] ---[ end trace 4da33b10a9de4dac ]---
I can confirm this issue on OpenWrt r15172-af07c6de9c (snapshot) running on netgear-r6220
The mesh link works normally despite this.