Comment 40 for bug 652775

I'm hitting the same error on 3.3.1-5.fc16.x86_64 (Fedora 16) and on several kernels before too.

I'm connected using WPA2 Enterprise / PEAP / MSCHAPv2.

I have troubles with frequent roaming between two AP while signal is strong from both. Connection sometimes stops working while trying to roam between APs.

Don't know, if this two problems are related. I've never had this problem while connected to single AP with WPA2 personal with good quality signal.

[94624.698868] wlan0: associate with 00:19:77:69:df:91 (try 1)
[94624.701543] wlan0: RX ReassocResp from 00:19:77:69:df:91 (capab=0x431 status=0 aid=4)
[94624.701552] wlan0: associated
[94624.701560] wlan0: moving STA 00:19:77:69:df:91 to state 1
[94624.701564] wlan0: moving STA 00:19:77:69:df:91 to state 2
[94624.701570] wlan0: No basic rates in AssocResp. Using min supported rate instead.
[94625.627865] wlan0: moving STA 00:19:77:69:df:91 to state 3
[94633.471236] wlan0: authenticate with 00:19:77:69:df:a1 (try 1)
[94633.670804] wlan0: authenticate with 00:19:77:69:df:a1 (try 2)
[94633.870789] wlan0: authenticate with 00:19:77:69:df:a1 (try 3)
[94633.951070] ------------[ cut here ]------------
[94633.951124] WARNING: at include/net/mac80211.h:3614 rate_control_send_low+0x23e/0x250 [mac80211]()
[94633.951130] Hardware name: 4236MBG
[94633.951133] Modules linked in: mmc_block nf_nat_h323 nf_conntrack_h323 nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_sip nf_conntrack_sip nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp nls_utf8 vfat fat usb_storage tcp_lp ppdev parport_pc lp parport fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge 8021q garp lockd tpm_bios stp llc ip6t_REJECT nf_conntrack_ipv6 nf_conntrack_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 xt_state ip6table_filter nf_conntrack ip6_tables snd_hda_codec_hdmi snd_hda_codec_conexant uvcvideo videobuf2_core videodev media vhost_net macvtap macvlan tun virtio_net snd_hda_intel videobuf2_vmalloc snd_hda_codec snd_hwdep videobuf2_memops snd_seq kvm_intel arc4 kvm snd_seq_device iwlwifi snd_pcm snd_timer mac80211 snd_page_alloc microcode iTCO_wdt uinput iTCO_vendor_support e1000e wmi cfg80211 thinkpad_acpi snd rfkill soundcore i2c_i801 sunrpc xts gf128mul dm_crypt sdhci_pci sdhci mmc_core i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[94633.951312] Pid: 3, comm: ksoftirqd/0 Not tainted 3.3.1-5.fc16.x86_64 #1
[94633.951318] Call Trace:
[94633.951339] [<ffffffff8105798f>] warn_slowpath_common+0x7f/0xc0
[94633.951350] [<ffffffff810579ea>] warn_slowpath_null+0x1a/0x20
[94633.951385] [<ffffffffa024f78e>] rate_control_send_low+0x23e/0x250 [mac80211]
[94633.951415] [<ffffffffa02d3fe9>] rs_get_rate+0x99/0x310 [iwlwifi]
[94633.951451] [<ffffffffa024fbae>] rate_control_get_rate+0xae/0x180 [mac80211]
[94633.951493] [<ffffffffa025ba0f>] invoke_tx_handlers+0x7cf/0x1400 [mac80211]
[94633.951527] [<ffffffffa023ad5c>] ? sta_info_get+0x6c/0x80 [mac80211]
[94633.951557] [<ffffffffa025c790>] ieee80211_tx+0x60/0xc0 [mac80211]
[94633.951585] [<ffffffffa025d942>] ieee80211_tx_pending+0x162/0x270 [mac80211]
[94633.951594] [<ffffffff8105e958>] tasklet_action+0x78/0x140
[94633.951601] [<ffffffff8105efb8>] __do_softirq+0xb8/0x230
[94633.951608] [<ffffffff8105f1ea>] run_ksoftirqd+0xba/0x170
[94633.951614] [<ffffffff8105f130>] ? __do_softirq+0x230/0x230
[94633.951623] [<ffffffff81079af3>] kthread+0x93/0xa0
[94633.951633] [<ffffffff815fd424>] kernel_thread_helper+0x4/0x10
[94633.951641] [<ffffffff81079a60>] ? kthread_freezable_should_stop+0x70/0x70
[94633.951649] [<ffffffff815fd420>] ? gs_change+0x13/0x13
[94633.951654] ---[ end trace 00b42167ea90abcb ]---
[94633.952938] wlan0: moving STA 00:19:77:69:df:91 to state 2
[94633.952943] wlan0: moving STA 00:19:77:69:df:91 to state 1
[94633.952948] wlan0: moving STA 00:19:77:69:df:91 to state 0
[94633.953329] cfg80211: Calling CRDA to update world regulatory domain