[FS#521] kernel warning in mac802 11 / ibss_leave / r3472

[LEDE Bugs]

The following task has a new comment added:

FS#521 - kernel warning in mac802 11 / ibss_leave / r3472
User who did this - Bastian Bittorf (bittorf)

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another one on PPC/WDR4900 with r3439


[35257.598507] ------------[ cut here ]------------
[35257.603129] WARNING: at compat-wireless-2017-01-31/net/mac80211/ibss.c:1082
[35257.610079] Modules linked in: ath9k ath9k_common ath9k_hw ath snd_usb_audio nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 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_NETMAP xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda snd_usbmidi_lib nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack macvlan iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables compat em_nbyte sch_dsmark sch_pie sch_codel sch_gred em_cmp cls_basic act_ipt sch_red sch_prio em_meta act_police em_text sch_sfq sch_fq act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_tbf sch_htb sch_hfsc sch_ingress ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables tun snd_compress snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_rawmidi snd_seq_device snd_hwdep snd soundcore nls_utf8 zram lz4_decompress lz4_compress lzo_compress lzo_decompress zsmalloc usb_storage gpio_keys leds_gpio scsi_mod mbcache button_hotplug input_core crc16 crc32c_generic [last unloaded: sd_mod]
[35257.771965] 
[35257.771965] GPR00: c9952128 c710fbc0 c7a3a760 00000000 c710fbf4 00000000 00000001 00000000 
[35257.771965] GPR08: c721ed14 00000001 c99a1b26 00000000 000000ff 00000000 c003c9dc c694dde0 
[35257.771965] GPR16: c7b76070 00000fff 00000fff c709c138 c6ead000 c7058b60 00000000 00000087 
[35257.771965] GPR24: 00000000 c710fc68 c721ed14 00000000 c7058b60 c71909d8 c6e24420 c7b76070 
[35257.801687] NIP [c995224c] ieee80211_get_vht_mask_from_cap+0x1964/0x1c64 [mac80211]
[35257.809350] LR [c9952478] ieee80211_get_vht_mask_from_cap+0x1b90/0x1c64 [mac80211]
[35257.816908] Call Trace:
[35257.819364] [c710fbc0] [c9952128] ieee80211_get_vht_mask_from_cap+0x1840/0x1c64 [mac80211] (unreliable)
[35257.828769] [c710fc60] [c9952538] ieee80211_get_vht_mask_from_cap+0x1c50/0x1c64 [mac80211]
[35257.837043] [c710fd30] [c9952af4] ieee80211_ibss_rx_queued_mgmt+0x264/0x370 [mac80211]
[35257.844968] [c710fe20] [c9953da8] ieee80211_ibss_leave+0x7a8/0x17b0 [mac80211]
[35257.852195] [c710fe80] [c0037f60] process_one_work+0x208/0x380
[35257.858024] [c710fea0] [c0038348] worker_thread+0x270/0x48c
[35257.863594] [c710fef0] [c003caa4] kthread+0xc8/0xcc
[35257.868470] [c710ff40] [c000cb3c] ret_from_kernel_thread+0x5c/0x64
[35257.874642] --- interrupt: 0 at   (null)
[35257.874642]     LR =   (null)
[35257.881508] Instruction dump:
[35257.884467] 38810034 387e0528 7f984800 419e024c 4bf3a9a9 2f830000 40be0030 3d40c99a 
[35257.892224] 394a1b26 3b600001 892a0003 69290001  2f890000 41be01d0 39200001 
[35257.900154] ---[ end trace 0d26307f39730729 ]---

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=521#comment1842