Hi Dan,
When I create an AP interface using iw, it is followed by a change
interface back to managed mode. I added a WARN_ON to see where it came
from and it turns out to be the NetworkManager. However, I had disabled
wifi as you suggested on the mailing list once. What is your take on
this: bug or intentional?
Regards,
Arend
[195312.837736] brcmfmac: brcmf_cfg80211_add_iface enter: wl5ap type 3
[195312.844033] brcmfmac: brcmf_ap_add_vif Adding vif "wl5ap"
[195312.849525] brcmfmac: brcmf_alloc_vif allocating virtual interface
(size=3136)
[195312.856842] brcmfmac: brcmf_fil_bsscfg_data_set ifidx=0, bssidx=0,
name=bsscfg:ssid, len=40
[195312.865276] brcmutil: data
[195312.868070] 00000000: 02 00 00 00 05 00 00 00 73 73 69 64 32 00 00
00 ........ssid2...
[195312.876187] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
[195312.884301] 00000020: 00 00 00 00 00 00 00 00
........
[195312.891725] brcmfmac: brcmf_sdio_bus_txctl Enter
[195312.896466] brcmfmac: brcmf_sdio_dpc Enter
[195312.900663] brcmfmac: brcmf_sdio_kso_control Enter: on=1
[195312.910548] brcmfmac: brcmf_sdio_isr Enter
[195312.914877] brcmfmac: brcmf_sdio_tx_ctrlframe Enter
[195312.919943] brcmfmac: brcmf_sdio_dpc Enter
[195312.920022] brcmfmac: brcmf_sdio_bus_rxctl Enter
[195312.928967] brcmfmac: brcmf_sdio_isr Enter
[195312.933282] brcmfmac: brcmf_sdio_dpc Dongle reports CHIPACTIVE
[195312.939220] brcmfmac: brcmf_sdio_readframes Enter
[195312.944099] brcmfmac: brcmf_sdio_read_control Enter
[195312.949234] brcmfmac: brcmf_sdio_bus_rxctl resumed on rxctl frame,
got 68 expected 68
[195312.949310] brcmfmac: brcmf_fweh_event_worker event IF (54) ifidx 1
bsscfg 2 addr 00:90:4c:70:43:54
[195312.949312] brcmfmac: brcmf_fweh_event_worker version 2 flags 0
status 0 reason 0
[195312.949314] brcmutil: event payload, len=5
[195312.949316] 00000000: 01 01 00 02 01
.....
[195312.949318] brcmfmac: brcmf_fweh_handle_if_event action: 1 idx: 1
bsscfg: 2 flags: 0 role: 1
[195312.949320] brcmfmac: brcmf_fweh_handle_if_event adding wl0.2
(00:90:4c:70:43:54)
[195312.949322] brcmfmac: brcmf_add_if Enter, idx=2, ifidx=1
[195312.949323] brcmfmac: brcmf_add_if allocate netdev interface
[195312.949333] brcmfmac: brcmf_add_if ==== pid:135f, if:wl0.2
(00:90:4c:70:43:54) created ===
[195312.949336] brcmfmac: brcmf_fws_macdesc_init enter: desc
ffff8800bb798b00 ea=00:90:4c:70:43:54, ifidx=1
[195312.949338] brcmfmac: brcmf_fws_add_interface added MACIF:1
[195312.949341] brcmfmac: brcmf_notify_vif_event Enter: action 1 flags 0
ifidx 1 bsscfg 2
[195312.949403] brcmfmac: brcmf_sdio_dpc Enter
[195312.970325] brcmfmac: brcmf_sdio_kso_control Enter: on=0
[195313.054361] brcmfmac: brcmf_net_attach Enter, idx=2
mac=00:90:4c:70:43:54
[195313.061537] brcmfmac: brcmf_netdev_get_stats Enter, idx=2
[195313.067170] brcmfmac: brcmf_net_attach wl5ap: Broadcom Dongle Host
Driver
[195313.074637] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.080149] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.085653] brcmfmac: brcmf_netdev_get_stats Enter, idx=2
[195313.091877] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.097400] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.102934] brcmfmac: brcmf_netdev_get_stats Enter, idx=2
[195313.108825] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.114322] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.119835] brcmfmac: brcmf_netdev_get_stats Enter, idx=2
[195313.125593] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.131117] brcmfmac: brcmf_netdev_get_stats Enter, idx=0
[195313.136610] brcmfmac: brcmf_netdev_get_stats Enter, idx=2
[195313.142185] brcmfmac: brcmf_cfg80211_change_iface Enter, idx=2, type=2
[195313.148804] ------------[ cut here ]------------
[195313.153520] WARNING: CPU: 1 PID: 1398 at
drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c:864
brcmf_cfg80211_change_iface+0x2a9/0x2d0 [brcmfmac]()
[195313.166897] Modules linked in: brcmfmac(O) brcmutil(O) sdhci_pci
sdhci cfg80211 nfsv3 nfs_acl nf_conntrack_ipv4 nf_defrag_ipv4
xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 iptable_mangle
xt_tcpudp ip6table_filter ip6_tables iptable_filter ip_tables
ebtable_nat ebtables x_tables autofs4 nfs bridge stp llc lockd grace
sunrpc fscache dell_wmi sparse_keymap snd_hda_codec_hdmi
snd_hda_codec_idt snd_hda_codec_generic dell_laptop pl2303 usbserial
nouveau dcdbas snd_hda_intel snd_hda_controller i8k snd_hda_codec
snd_hwdep snd_hda_core snd_pcm snd_seq_midi snd_seq_midi_event
snd_rawmidi snd_seq snd_seq_device coretemp crc32c_intel snd_timer
mxm_wmi intel_agp microcode serio_raw ttm drm_kms_helper intel_gtt
lpc_ich snd drm i2c_algo_bit intel_ips agpgart soundcore mfd_core video
mmc_block e1000e ptp firewire_ohci psmouse ahci libahci firewire_core
mmc_core crc_itu_t pps_core [last unloaded: cfg80211]
[195313.247913] CPU: 1 PID: 1398 Comm: NetworkManager Tainted: G
W O 4.1.0-rc6-wl-testing-x64-00002-gc37b3da #1
[195313.258686] Hardware name: Dell Inc. Latitude E6410/07XJP9, BIOS A07
02/15/2011
[195313.266107] ffffffffa0edc918 ffff8800cafef988 ffffffff8161259f
0000000000000001
[195313.273669] 0000000000000000 ffff8800cafef9c8 ffffffff810537ca
ffff8800c5483000
[195313.281228] 0000000000000002 ffff8800c5483000 ffff8800b9c36000
ffff8800b9cc0280
[195313.288787] Call Trace:
[195313.291325] [<ffffffff8161259f>] dump_stack+0x45/0x57
[195313.296581] [<ffffffff810537ca>] warn_slowpath_common+0x8a/0xc0
[195313.302669] [<ffffffff810538ba>] warn_slowpath_null+0x1a/0x20
[195313.308617] [<ffffffffa0ea9a29>]
brcmf_cfg80211_change_iface+0x2a9/0x2d0 [brcmfmac]
[195313.316460] [<ffffffffa0e006e4>] cfg80211_change_iface+0x1a4/0x3f0
[cfg80211]
[195313.323801] [<ffffffffa0e06dd6>] ?
__cfg80211_wdev_from_attrs+0x36/0x1a0 [cfg80211]
[195313.331630] [<ffffffffa0e07ce7>] nl80211_set_interface+0x157/0x230
[cfg80211]
[195313.338973] [<ffffffff8154a1e5>] genl_family_rcv_msg+0x1a5/0x3d0
[195313.345148] [<ffffffff8154a410>] ? genl_family_rcv_msg+0x3d0/0x3d0
[195313.351513] [<ffffffff8154a4a1>] genl_rcv_msg+0x91/0xd0
[195313.356907] [<ffffffff81549741>] netlink_rcv_skb+0xc1/0xe0
[195313.362596] [<ffffffff81549dec>] genl_rcv+0x2c/0x40
[195313.367644] [<ffffffff815490bb>] netlink_unicast+0x15b/0x240
[195313.373502] [<ffffffff815494e5>] netlink_sendmsg+0x345/0x3c0
[195313.379335] [<ffffffff814ff82d>] sock_sendmsg+0x3d/0x50
[195313.384765] [<ffffffff8150014f>] ___sys_sendmsg+0x28f/0x2a0
[195313.390507] [<ffffffff815002c1>] ? ___sys_recvmsg+0x161/0x1f0
[195313.396456] [<ffffffff811f1689>] ? sysctl_head_finish+0x49/0x50
[195313.402546] [<ffffffff81059730>] ? proc_put_long+0x90/0x90
[195313.408238] [<ffffffff811f1829>] ? proc_sys_call_handler+0x79/0xc0
[195313.414588] [<ffffffff811c3f96>] ? fsnotify+0x2e6/0x410
[195313.420020] [<ffffffff81337958>] ? lockref_put_or_lock+0x58/0x80
[195313.426196] [<ffffffff811a2495>] ? __fget_light+0x25/0x70
[195313.431799] [<ffffffff81500a32>] __sys_sendmsg+0x42/0x80
[195313.437281] [<ffffffff81500a82>] SyS_sendmsg+0x12/0x20
[195313.442749] [<ffffffff81618197>] system_call_fastpath+0x12/0x6a
[195313.448839] ---[ end trace a6c411e9e8c26904 ]---
[195313.453573] brcmf_cfg80211_change_iface: iface validation failed:
err=-16
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