[FS#3409] can not connect to wifi after "WARNING" in klog

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Bastian Bittorf (bittorf) 

Attached to Project - OpenWrt/LEDE Project
Summary - can not connect to wifi after "WARNING" in klog
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - On "TP-LINK TL-WDR4900 v1" with trunk r14723, i could
not connect to wifi anymore. I found this message in klog.
Executing 'wifi' fixed it.
I'am not 100% sure if this 'WARNING' is the root cause.

----

 3138.668410] ------------[ cut here ]------------
[ 3138.673122] WARNING: CPU: 0 PID: 9094 at backports-5.8-1/net/mac80211/ibss.c:1087 ieee80211_he_spr_ie_to_bss_conf+0x20c0/0x2168 [mac80211]
[ 3138.685541] Modules linked in: ath9k ath9k_common xt_connlimit nf_conncount iptable_nat ath9k_hw ath xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_FLOWOFFLOAD xt_CT nf_nat nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_comment xt_TCPMSS xt_LOG xt_HL xt_DSCP xt_CLASSIFY ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 macvlan iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables compat sch_sfq sch_red sch_prio sch_pie sch_multiq sch_gred sch_fq sch_dsmark sch_codel em_text em_nbyte em_meta em_cmp act_simple act_police act_pedit act_ipt act_gact act_csum libcrc32c sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route
[ 3138.685685]  cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 nls_utf8 zram zsmalloc usb_storage gpio_keys leds_gpio fsl_mph_dr_of ehci_platform ehci_fsl scsi_mod ehci_hcd mbcache button_hotplug input_core usbcore usb_common crc32c_generic [last unloaded: sd_mod]
[ 3138.806062] CPU: 0 PID: 9094 Comm: kworker/u2:0 Not tainted 5.4.71 #0
[ 3138.812521] Workqueue: phy1 ieee80211_ibss_leave [mac80211]
[ 3138.818085] NIP:  c97538cc LR: c9753684 CTR: 00000000
[ 3138.823127] REGS: c79f7ac0 TRAP: 0700   Not tainted  (5.4.71)
[ 3138.828862] MSR:  00029000   CR: 22002422  XER: 00000000
[ 3138.835038]
[ 3138.835038] GPR00: c9753540 c79f7b78 c791d4a0 00000000 c79f7bb0 00000000 00000001 00000000
[ 3138.835038] GPR08: c49a2d28 c49a2cf0 00000000 c41e4a8c c0016400 00000000 c004844c c4be3160
[ 3138.835038] GPR16: 00000000 00000000 00000fff 00000000 c4b0e130 c4341000 c4150c00 00000000
[ 3138.835038] GPR24: 00000000 c42a7080 c49a2d28 c4150c00 c4f3d3d8 00000087 c42a7070 c41e4460
[ 3138.869913] NIP [c97538cc] ieee80211_he_spr_ie_to_bss_conf+0x20c0/0x2168 [mac80211]
[ 3138.877576] LR [c9753684] ieee80211_he_spr_ie_to_bss_conf+0x1e78/0x2168 [mac80211]
[ 3138.885133] Call Trace:
[ 3138.887589] [c79f7b78] [c9753540] ieee80211_he_spr_ie_to_bss_conf+0x1d34/0x2168 [mac80211] (unreliable)
[ 3138.896990] [c79f7d08] [c9753e10] ieee80211_ibss_rx_queued_mgmt+0xcc/0x3dc [mac80211]
[ 3138.904828] [c79f7e28] [c9755aa8] ieee80211_ibss_leave+0xdbc/0x1c64 [mac80211]
[ 3138.912053] [c79f7e78] [c0042084] process_one_work+0x290/0x3dc
[ 3138.917879] [c79f7ea8] [c0042b20] worker_thread+0x88/0x4c8
[ 3138.923360] [c79f7ef8] [c004858c] kthread+0x140/0x144
[ 3138.928408] [c79f7f38] [c000f26c] ret_from_kernel_thread+0x14/0x1c
[ 3138.934577] Instruction dump:
[ 3138.937538] 39200001 7ea3ab78 993506f0 4801f779 4bfffb58 0fe00000 38bd0004 7f84e378
[ 3138.945282] 38c00018 7f63db78 4802bf65 4bffff78  8261015c 4bfffdbc 7f8b2040
[ 3138.953202] ---[ end trace 7041a104a2b1da00 ]---



More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3409

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