17502.126120] CPU: 1 PID: 31129 Comm: kworker/1:2 Tainted: P W OE 3.19.0-22-generic #22-Ubuntu [17502.126131] Hardware name: Dell Inc. XPS M1330 /0PU073, BIOS A15 12/26/2008 [17502.126142] Workqueue: events ieee80211_restart_work [mac80211] [17502.126144] ffffffffc0514fd0 ffff88005f5ef7d8 ffffffff817c4188 0000000000000007 [17502.126147] ffff88005f5ef828 ffff88005f5ef818 ffffffff810769aa 0000000000000000 [17502.126150] ffff8800d82988c0 ffff8800d88a0680 ffff8800d88a0680 0000000000004000 [17502.126154] Call Trace: [17502.126158] [] dump_stack+0x45/0x57 [17502.126161] [] warn_slowpath_common+0x8a/0xc0 [17502.126164] [] warn_slowpath_fmt+0x46/0x50 [17502.126176] [] ieee80211_bss_info_change_notify+0x1d2/0x1e0 [mac80211] [17502.126195] [] ieee80211_assign_vif_chanctx+0x268/0x450 [mac80211] [17502.126213] [] __ieee80211_vif_release_channel+0x54/0x140 [mac80211] [17502.126230] [] ieee80211_vif_release_channel+0x51/0x70 [mac80211] [17502.126249] [] ieee80211_set_disassoc+0x25f/0x3d0 [mac80211] [17502.126267] [] ieee80211_mgd_deauth+0x190/0x2b0 [mac80211] [17502.126283] [] ieee80211_deauth+0x18/0x20 [mac80211] [17502.126300] [] cfg80211_mlme_deauth+0x8f/0x140 [cfg80211] [17502.126315] [] cfg80211_mlme_down+0x6b/0x90 [cfg80211] [17502.126330] [] cfg80211_disconnect+0x196/0x1b0 [cfg80211] [17502.126334] [] ? print_time.part.11+0x6c/0x90 [17502.126346] [] __cfg80211_leave+0x98/0x160 [cfg80211] [17502.126357] [] cfg80211_leave+0x2f/0x50 [cfg80211] [17502.126368] [] cfg80211_netdev_notifier_call+0x3bb/0x620 [cfg80211] [17502.126372] [] ? inetdev_event+0x37/0x540 [17502.126375] [] ? __enqueue_entity+0x78/0x80 [17502.126380] [] notifier_call_chain+0x4f/0x80 [17502.126384] [] raw_notifier_call_chain+0x16/0x20 [17502.126387] [] call_netdevice_notifiers_info+0x39/0x70 [17502.126390] [] __dev_close_many+0x51/0xf0 [17502.126393] [] dev_close_many+0x81/0x120 [17502.126396] [] dev_close.part.68+0x36/0x50 [17502.126399] [] dev_close+0x21/0x30 [17502.126410] [] cfg80211_shutdown_all_interfaces+0x4d/0xc0 [cfg80211] [17502.126428] [] ieee80211_reconfig+0x325/0x1620 [mac80211] [17502.126440] [] ieee80211_restart_work+0x42/0x80 [mac80211] [17502.126443] [] process_one_work+0x158/0x430 [17502.126446] [] worker_thread+0x5b/0x530 [17502.126449] [] ? rescuer_thread+0x3a0/0x3a0 [17502.126452] [] kthread+0xc9/0xe0 [17502.126456] [] ? kthread_create_on_node+0x1c0/0x1c0 [17502.126459] [] ret_from_fork+0x58/0x90 [17502.126462] [] ? kthread_create_on_node+0x1c0/0x1c0 [17502.126465] ---[ end trace 84241b569b03f8d6 ]--- [17502.127468] ------------[ cut here ]------------ [17502.127499] WARNING: CPU: 1 PID: 31129 at /build/buildd/linux-3.19.0/net/mac80211/driver-ops.h:12 ieee80211_do_stop+0x8e7/0x8f0 [mac80211]() [17502.127517] wlan0: Failed check-sdata-in-driver check, flags: 0x4 [17502.127519] Modules linked in: xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key xfrm_algo ctr ccm binfmt_misc rfcomm bnep hid_generic usbhid snd_hda_codec_idt snd_hda_codec_generic hid snd_hda_intel snd_hda_controller nvidia(POE) gpio_ich snd_hda_codec snd_hwdep dell_wmi sparse_keymap btusb bluetooth snd_pcm dell_laptop snd_seq_midi dcdbas snd_seq_midi_event kvm_intel snd_rawmidi kvm snd_seq arc4 uvcvideo serio_raw videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common r852 sm_common nand snd_seq_device iwl3945 snd_timer videodev iwlegacy media mac80211 snd nand_ecc nand_bch bch nand_ids r592 mtd memstick lpc_ich cfg80211 soundcore drm shpchp video wmi joydev mac_hid coretemp parport_pc ppdev lp parport autofs4 psmouse ahci firewire_ohci libahci pata_acpi firewire_core crc_itu_t [17502.127577] sdhci_pci tg3 sdhci ptp pps_core [17502.127584] CPU: 1 PID: 31129 Comm: kworker/1:2 Tainted: P W OE 3.19.0-22-generic #22-Ubuntu [17502.127586] Hardware name: Dell Inc. XPS M1330 /0PU073, BIOS A15 12/26/2008 [17502.127598] Workqueue: events ieee80211_restart_work [mac80211] [17502.127600] ffffffffc0516768 ffff88005f5efb48 ffffffff817c4188 0000000000000007 [17502.127604] ffff88005f5efb98 ffff88005f5efb88 ffffffff810769aa ffff8800d82988c0 [17502.127607] ffff8800d82988c0 ffff8800d88a0680 ffff8800d88a1530 ffff8800d88a1548 [17502.127610] Call Trace: [17502.127617] [] dump_stack+0x45/0x57 [17502.127621] [] warn_slowpath_common+0x8a/0xc0 [17502.127624] [] warn_slowpath_fmt+0x46/0x50 [17502.127641] [] ? ieee80211_clear_tx_pending+0x4b/0x70 [mac80211] [17502.127656] [] ieee80211_do_stop+0x8e7/0x8f0 [mac80211] [17502.127662] [] ? dev_deactivate_many+0x213/0x260 [17502.127677] [] ieee80211_stop+0x1a/0x20 [mac80211] [17502.127680] [] __dev_close_many+0x95/0xf0 [17502.127683] [] dev_close_many+0x81/0x120 [17502.127686] [] dev_close.part.68+0x36/0x50 [17502.127689] [] dev_close+0x21/0x30 [17502.127709] [] cfg80211_shutdown_all_interfaces+0x4d/0xc0 [cfg80211] [17502.127727] [] ieee80211_reconfig+0x325/0x1620 [mac80211] [17502.127739] [] ieee80211_restart_work+0x42/0x80 [mac80211] [17502.127742] [] process_one_work+0x158/0x430 [17502.127745] [] worker_thread+0x5b/0x530 [17502.127749] [] ? rescuer_thread+0x3a0/0x3a0 [17502.127752] [] kthread+0xc9/0xe0 [17502.127756] [] ? kthread_create_on_node+0x1c0/0x1c0 [17502.127760] [] ret_from_fork+0x58/0x90 [17502.127763] [] ? kthread_create_on_node+0x1c0/0x1c0 [17502.127765] ---[ end trace 84241b569b03f8d7 ]--- [17502.127944] cfg80211: Calling CRDA to update world regulatory domain [17502.144833] cfg80211: World regulatory domain updated: [17502.144837] cfg80211: DFS Master region: unset [17502.144839] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [17502.144843] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [17502.144847] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [17502.144850] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [17502.144853] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [17502.144856] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)