We saw this (and many similar) when trying to bring up ~200 stations on a radio.
Shortly after, the machine locked hard.
Tainting comes from a network emulation module that was not in use (but was loaded).
WARNING: at /home/greearb/git/linux-3.5.dev.y/net/mac80211/driver-ops.h:12 ieee80211_bss_info_change_notify+0x167/0x192 [mac80211]()
Hardware name: To be filled by O.E.M.
sta39: Failed check-sdata-in-driver check, flags: 0x0
Modules linked in: fuse 8021q garp stp llc lockd macvlan sunrpc wanlink(PO) pktgen f71882fg ath9k ath9k_common snd_hda_codec_realtek ath9k_hw snd_hda_intel
coretemp ath hwmon snd_hda_codec mac80211 snd_hwdep snd_seq snd_seq_device kvm snd_pcm cfg80211 ppdev snd_page_alloc gpio_ich microcode e1000e snd_timer
parport_pc serio_raw snd i2c_i801 lpc_ich pcspkr parport mfd_core uinput soundcore ipv6 i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: nf_nat]
Pid: 29641, comm: iw Tainted: P O 3.5.7+ #26
Call Trace:
[<ffffffff8105c5cc>] warn_slowpath_common+0x80/0x98
[<ffffffff8105c678>] warn_slowpath_fmt+0x41/0x43
[<ffffffffa03b4a89>] ieee80211_bss_info_change_notify+0x167/0x192 [mac80211]
[<ffffffffa03b4b83>] ieee80211_ifa_changed+0xcf/0xe1 [mac80211]
[<ffffffff814e635c>] notifier_call_chain+0x32/0x5e
[<ffffffff8107a38b>] __blocking_notifier_call_chain+0x4b/0x62
[<ffffffff8107a3b1>] blocking_notifier_call_chain+0xf/0x11
[<ffffffff8148670f>] __inet_del_ifa+0x190/0x22a
[<ffffffff81487d9b>] inetdev_event+0x28f/0x403
[<ffffffff8143fc4b>] ? fib_rules_event+0x23/0x13d
[<ffffffff814e635c>] notifier_call_chain+0x32/0x5e
[<ffffffff8107a158>] raw_notifier_call_chain+0xf/0x11
[<ffffffff8142d4ef>] call_netdevice_notifiers+0x45/0x4a
[<ffffffff8142d8a1>] rollback_registered_many+0x167/0x23c
[<ffffffff8142da6d>] unregister_netdevice_queue+0x94/0xd6
[<ffffffffa03bf63e>] ieee80211_if_remove+0x98/0x9c [mac80211]
[<ffffffffa03c5f03>] ieee80211_del_iface+0x10/0x14 [mac80211]
[<ffffffffa02093cf>] nl80211_del_interface+0x26/0x28 [cfg80211]
[<ffffffff8144cecb>] genl_rcv_msg+0x22b/0x273
[<ffffffff8144cca0>] ? genl_rcv+0x28/0x28
[<ffffffff8144b798>] netlink_rcv_skb+0x3e/0x8f
[<ffffffff8144cc99>] genl_rcv+0x21/0x28
[<ffffffff8144b556>] netlink_unicast+0xe4/0x16a
[<ffffffff8144bd11>] netlink_sendmsg+0x23d/0x25b
[<ffffffff8141995c>] __sock_sendmsg_nosec+0x5f/0x6a
[<ffffffff814199a4>] __sock_sendmsg+0x3d/0x48
[<ffffffff81419f86>] sock_sendmsg+0xa3/0xbc
[<ffffffff810faaa0>] ? mem_cgroup_end_update_page_stat+0x1c/0x27
[<ffffffff810d7354>] ? unlock_page+0x22/0x27
[<ffffffff810f36e7>] ? __do_fault+0x364/0x3a7
[<ffffffff814193a2>] ? copy_from_user+0x9/0xb
[<ffffffff81419c2e>] ? move_addr_to_kernel+0x2b/0x65
[<ffffffff81424add>] ? copy_from_user+0x9/0xb
[<ffffffff81424e2a>] ? verify_iovec+0x4f/0xa3
[<ffffffff8141b1a8>] __sys_sendmsg+0x1fe/0x280
[<ffffffff810f4b0d>] ? handle_mm_fault+0x1c7/0x1e1
[<ffffffff814e62b8>] ? do_page_fault+0x2de/0x350
[<ffffffff8107bcd2>] ? lg_local_unlock+0x28/0x45
[<ffffffff81138836>] ? mntput_no_expire+0x3f/0x138
[<ffffffff81138954>] ? mntput+0x25/0x27
[<ffffffff8141b387>] sys_sendmsg+0x3d/0x5b
[<ffffffff814e8179>] system_call_fastpath+0x16/0x1b
---[ end trace cf48c0a49a51fabd ]---
IPv6: ADDRCONF(NETDEV_CHANGE): sta155: link becomes ready
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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