Was bringing up 128 stations configured for HotSpot 2.0 (wpa2, 802.1x, etc)
on a relatively slow machine.
I doubt it has much to do with how they are configured however.
The warning that hit is here:
roc = list_first_entry(&local->roc_list, struct ieee80211_roc_work,
list);
if (WARN_ON_ONCE(roc->started))
return;
This is running my normal set of patches.
[ 133.530413] ------------[ cut here ]------------
[ 133.541409] WARNING: CPU: 1 PID: 7246 at /home/greearb/git/linux-3.11.dev.y/net/mac80211/offchannel.c:269 ieee80211_start_next_roc+0x1f1/0x210 [mac80211]()
[ 133.565902] Modules linked in: nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack 8021q garp stp mrp llc fuse macvlan wanlink(O) pktgen
iTCO_wdt gpio_ich iTCO_vendor_support arc4 pcspkr serio_raw i2c_i801 snd_hda_codec_realtek lpc_ich joydev ath9k_htc ath9k snd_hda_intel ath9k_common
snd_hda_codec snd_hwdep ath9k_hw ath mac80211 snd_seq snd_seq_device cfg80211 snd_pcm rfkill r8169 mii snd_page_alloc snd_timer snd soundcore uinput i915 video
i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: iptable_nat]
[ 133.643933] CPU: 1 PID: 7246 Comm: ip Tainted: G C O 3.11.0+ #21
[ 133.659832] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS 080015 05/31/2010
[ 133.679989] 0000010d efa6b964 c09c877c f849d0e4 efa6b994 c0459804 c0b65c08 00000001
[ 133.694895] 00001c4e f849d0e4 0000010d f844a711 f844a711 f7774360 f7774360 00000001
[ 133.708929] efa6b9a4 c0459842 00000009 00000000 efa6b9dc f844a711 efd14c30 f7774e78
[ 133.723050] Call Trace:
[ 133.731352] [<c09c877c>] dump_stack+0x4c/0x78
[ 133.741687] [<c0459804>] warn_slowpath_common+0x84/0xa0
[ 133.752888] [<f844a711>] ? ieee80211_start_next_roc+0x1f1/0x210 [mac80211]
[ 133.765706] [<f844a711>] ? ieee80211_start_next_roc+0x1f1/0x210 [mac80211]
[ 133.778334] [<c0459842>] warn_slowpath_null+0x22/0x30
[ 133.789153] [<f844a711>] ieee80211_start_next_roc+0x1f1/0x210 [mac80211]
[ 133.801612] [<f846879e>] ? ieee80211_queue_work+0x2e/0x40 [mac80211]
[ 133.813715] [<f848759d>] ? ieee80211_mesh_notify_scan_completed+0x7d/0x90 [mac80211]
[ 133.827250] [<f844983a>] __ieee80211_scan_completed+0xca/0x1f0 [mac80211]
[ 133.839946] [<f8449a49>] ieee80211_scan_cancel+0xe9/0x190 [mac80211]
[ 133.852084] [<c0459fa8>] ? put_online_cpus+0x48/0x70
[ 133.862866] [<f8453547>] ieee80211_do_stop+0x647/0x700 [mac80211]
[ 133.874749] [<c09009d6>] ? dev_deactivate_many+0x1e6/0x210
[ 133.885858] [<f8453667>] ieee80211_stop+0x17/0x20 [mac80211]
[ 133.897063] [<c08e3049>] __dev_close_many+0x69/0xb0
[ 133.907875] [<c08fbe5e>] ? netpoll_rx_disable+0x3e/0x50
[ 133.918588] [<c08e30c6>] __dev_close+0x36/0x70
[ 133.928541] [<c08e2302>] __dev_change_flags+0x82/0x150
[ 133.939080] [<c0916554>] ? ip_local_deliver+0x44/0x90
[ 133.949514] [<c08e4033>] dev_change_flags+0x23/0x60
[ 133.959742] [<c08f17a4>] do_setlink+0x224/0x7a0
[ 133.969666] [<c06be142>] ? nla_parse+0x22/0xd0
[ 133.979333] [<c08f4b72>] rtnl_newlink+0x532/0x5b0
[ 133.989164] [<c06444fc>] ? security_capable+0x1c/0x30
[ 133.999259] [<c0461e4a>] ? ns_capable+0x2a/0x60
[ 134.008797] [<c08f2129>] rtnetlink_rcv_msg+0x179/0x1f0
[ 134.019120] [<c05596bd>] ? __kmalloc_track_caller+0x2d/0x170
[ 134.029897] [<c0515e66>] ? find_get_page+0x66/0xb0
[ 134.040175] [<c08d877b>] ? __alloc_skb+0x6b/0x180
[ 134.050340] [<c08f1fb0>] ? rtnetlink_rcv+0x30/0x30
[ 134.060039] [<c090b016>] netlink_rcv_skb+0x86/0xb0
[ 134.069626] [<c08f1f9c>] rtnetlink_rcv+0x1c/0x30
[ 134.078854] [<c090ad86>] netlink_unicast+0xe6/0x140
[ 134.088397] [<c090ba72>] netlink_sendmsg+0x242/0x620
[ 134.097907] [<c0452203>] ? __kunmap_atomic+0x83/0xa0
[ 134.107349] [<c051c780>] ? get_page_from_freelist+0x250/0x500
[ 134.117435] [<c08d147a>] sock_sendmsg+0xaa/0xe0
[ 134.126226] [<c08cf608>] ? copy_from_user+0x8/0x10
[ 134.135068] [<c08dba2b>] ? verify_iovec+0x5b/0xb0
[ 134.143761] [<c08d2285>] ___sys_sendmsg+0x2c5/0x2e0
[ 134.152498] [<c052244d>] ? lru_cache_add+0xd/0x10
[ 134.160935] [<c053adc3>] ? handle_pte_fault+0x493/0xae0
[ 134.169849] [<c08d7e30>] ? skb_dequeue+0x50/0x70
[ 134.178135] [<c053b601>] ? handle_mm_fault+0x1f1/0x300
[ 134.186733] [<c08d241e>] __sys_sendmsg+0x3e/0x70
[ 134.194841] [<c08d2466>] SyS_sendmsg+0x16/0x20
[ 134.202652] [<c08d27af>] SyS_socketcall+0x11f/0x2e0
[ 134.210877] [<c0566f7d>] ? ____fput+0xd/0x10
[ 134.218528] [<c09d364d>] sysenter_do_call+0x12/0x28
[ 134.226767] ---[ end trace 2b5f2f9c64702e82 ]---
[ 134.251401] ath: wiphy0: Failed to stop TX DMA, queues=0x005!
[ 134.280969] ath: wiphy0: Failed to stop TX DMA, queues=0x004!
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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