This is with a somewhat hacked-upon 3.7.5+ kernel. The extra wifi stuff is
mostly back-ported patches from newer upstream kernels.
Warning is from the code below...guess I'll add some more debug printing
here to try to get more useful info on exactly what failed... I am
NOT using WDS as far as I know...
/*
* Remove all stations associated with this interface.
*
* This must be done before calling ops->remove_interface()
* because otherwise we can later invoke ops->sta_notify()
* whenever the STAs are removed, and that invalidates driver
* assumptions about always getting a vif pointer that is valid
* (because if we remove a STA after ops->remove_interface()
* the driver will have removed the vif info already!)
*
* This is relevant only in WDS mode, in all other modes we've
* already removed all stations when disconnecting or similar,
* so warn otherwise.
*
* We call sta_info_flush_cleanup() later, to combine RCU waits.
*/
flushed = sta_info_flush_defer(sdata);
WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) ||
(sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1));
[ 119.169543] ------------[ cut here ]------------
[ 119.181949] WARNING: at /home/greearb/git/linux-3.7.dev.y/net/mac80211/iface.c:701 ieee80211_do_stop+0x639/0x680 [mac80211]()
[ 119.203980] Hardware name: To Be Filled By O.E.M.
[ 119.216903] Modules linked in: iptable_raw xt_CT nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack bridge veth ip_gre gre 8021q garp stp llc
fuse macvlan wanlink(O) pktgen nfsv3 nfs_acl nfsv4 auth_rpcgss nfs fscache lockd sunrpc binfmt_misc uinput arc4 ath9k mac80211 snd_hda_codec_realtek
snd_hda_intel snd_hda_codec iTCO_wdt ath9k_common ath9k_hw snd_hwdep gpio_ich coretemp iTCO_vendor_support snd_seq snd_seq_device lpc_ich microcode ath i2c_i801
snd_pcm pcspkr serio_raw cfg80211 snd_timer r8169 snd mii soundcore snd_page_alloc rfkill i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
iptable_nat]
[ 119.339413] Pid: 5023, comm: ip Tainted: G C O 3.7.5+ #42
[ 119.355852] Call Trace:
[ 119.364902] [<c044411d>] warn_slowpath_common+0x6d/0xa0
[ 119.376907] [<f8b261c9>] ? ieee80211_do_stop+0x639/0x680 [mac80211]
[ 119.390547] [<f8b261c9>] ? ieee80211_do_stop+0x639/0x680 [mac80211]
[ 119.404117] [<c044416d>] warn_slowpath_null+0x1d/0x20
[ 119.416209] [<f8b261c9>] ieee80211_do_stop+0x639/0x680 [mac80211]
[ 119.429109] [<c044bc02>] ? local_bh_enable_ip+0x42/0xa0
[ 119.441304] [<c093362f>] ? _raw_spin_unlock_bh+0x2f/0x40
[ 119.453265] [<c08556e1>] ? dev_deactivate_many+0x1e1/0x210
[ 119.466437] [<f8b26222>] ieee80211_stop+0x12/0x20 [mac80211]
[ 119.479176] [<c083b111>] __dev_close_many+0x61/0xb0
[ 119.490607] [<c044bc02>] ? local_bh_enable_ip+0x42/0xa0
[ 119.502586] [<c083b17f>] __dev_close+0x1f/0x30
[ 119.514624] [<c083a4bd>] __dev_change_flags+0x7d/0x150
[ 119.532500] [<c083ba7e>] dev_change_flags+0x1e/0x60
[ 119.545192] [<c084aa40>] do_setlink+0x190/0x8f0
[ 119.555693] [<c064c7a2>] ? nla_parse+0x22/0xd0
[ 119.566092] [<c084ce1e>] rtnl_newlink+0x52e/0x5b0
[ 119.576461] [<c05dbea7>] ? security_capable+0x17/0x20
[ 119.587417] [<c044ee95>] ? ns_capable+0x25/0x60
[ 119.597749] [<c09311c1>] ? __mutex_lock_common+0x301/0x3e0
[ 119.608846] [<c084c8f0>] ? rtnl_configure_link+0xa0/0xa0
[ 119.619788] [<c084a397>] rtnetlink_rcv_msg+0x267/0x2c0
[ 119.630436] [<c084a130>] ? rtnetlink_rcv+0x20/0x20
[ 119.640547] [<c085e936>] netlink_rcv_skb+0x86/0xb0
[ 119.651001] [<c084a127>] rtnetlink_rcv+0x17/0x20
[ 119.661077] [<c085e685>] netlink_unicast+0x175/0x1f0
[ 119.672308] [<c085f2ec>] netlink_sendmsg+0x1fc/0x300
[ 119.690238] [<c0829ead>] sock_sendmsg+0xbd/0xf0
[ 119.700857] [<c08284c8>] ? copy_from_user+0x8/0x10
[ 119.710918] [<c08343d3>] ? verify_iovec+0x53/0xb0
[ 119.720666] [<c082aff5>] __sys_sendmsg+0x2c5/0x2e0
[ 119.730549] [<c082a4a0>] ? sock_aio_write+0x170/0x170
[ 119.740744] [<c0435d7e>] ? arch_flush_lazy_mmu_mode+0x3e/0x60
[ 119.751410] [<c043d9fc>] ? kmap_atomic_prot+0x10c/0x130
[ 119.761581] [<c04f3be9>] ? handle_mm_fault+0x1c9/0x250
[ 119.772455] [<c082b176>] sys_sendmsg+0x36/0x60
[ 119.782972] [<c082b487>] sys_socketcall+0x107/0x2d0
[ 119.792880] [<c04f7c65>] ? sys_brk+0xd5/0x110
[ 119.802064] [<c0938a0d>] sysenter_do_call+0x12/0x33
[ 119.811601] ---[ end trace c1c50292a57e7eba ]---
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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