** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1401624
Title:
kernel WARNINGs when disabling WiFi with RF kill switch on Intel chip
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have a laptop with this WiFi controller:
02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260
Flags: bus master, fast devsel, latency 0, IRQ 47
Memory at e2d00000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
I switched WiFi off with the RF kill switch and got those errors:
[19011.796623] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[19011.797807] ------------[ cut here ]------------
[19011.797848] WARNING: CPU: 1 PID: 6870 at
/build/buildd/linux-3.16.0/net/wireless/core.c:949
cfg80211_netdev_notifier_call+0x5b9/0x630 [cfg80211]()
[19011.797853] Modules linked in: ses enclosure uas usb_storage dm_crypt
btusb arc4 dell_wmi sparse_keymap intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel iwlmvm kvm mac80211 dell_laptop dcdbas
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd iwlwifi snd_hda_codec_hdmi joydev
snd_hda_codec_idt serio_raw snd_hda_codec_generic bnep cfg80211 lpc_ich
dell_smo8800 rfcomm bluetooth 6lowpan_iphc snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi
snd_seq snd_seq_device snd_timer snd mei_me mac_hid shpchp mei soundcore
binfmt_misc parport_pc ppdev tpm_rng lp parport btrfs xor raid6_pq hid_generic
usbhid hid i915 firewire_ohci i2c_algo_bit sdhci_pci sdhci psmouse firewire_core
[19011.797964] ahci e1000e libahci drm_kms_helper drm ptp crc_itu_t pps_core
wmi video
[19011.797980] CPU: 1 PID: 6870 Comm: kworker/1:1 Not tainted
3.16.0-28-generic #37-Ubuntu
[19011.797983] Hardware name: Dell Inc. Latitude E6520/0NVF5K, BIOS A19
11/14/2013
[19011.797999] Workqueue: events cfg80211_rfkill_sync_work [cfg80211]
[19011.798003] 0000000000000009 ffff8801b3c47c28 ffffffff81781e6a
0000000000000000
[19011.798008] ffff8801b3c47c60 ffffffff8106fedd ffff88022136a8d0
ffff880035adc260
[19011.798013] 0000000000000002 ffff88022136a000 ffff880035adc000
ffff8801b3c47c70
[19011.798018] Call Trace:
[19011.798030] [<ffffffff81781e6a>] dump_stack+0x45/0x56
[19011.798038] [<ffffffff8106fedd>] warn_slowpath_common+0x7d/0xa0
[19011.798044] [<ffffffff8106ffba>] warn_slowpath_null+0x1a/0x20
[19011.798060] [<ffffffffc052f629>]
cfg80211_netdev_notifier_call+0x5b9/0x630 [cfg80211]
[19011.798068] [<ffffffff8167acab>] ? __dev_remove_pack+0x8b/0xb0
[19011.798075] [<ffffffff81761cbc>] ? __unregister_prot_hook+0xcc/0xd0
[19011.798082] [<ffffffff8109972d>] notifier_call_chain+0x4d/0x70
[19011.798087] [<ffffffff81099856>] raw_notifier_call_chain+0x16/0x20
[19011.798093] [<ffffffff8167b4d5>] call_netdevice_notifiers_info+0x35/0x60
[19011.798099] [<ffffffff8167b878>] dev_close_many+0xc8/0x120
[19011.798105] [<ffffffff8167da46>] dev_close.part.71+0x36/0x50
[19011.798110] [<ffffffff8167da81>] dev_close+0x21/0x30
[19011.798125] [<ffffffffc052e8e5>]
cfg80211_shutdown_all_interfaces+0x45/0xc0 [cfg80211]
[19011.798140] [<ffffffffc052e98b>] cfg80211_rfkill_sync_work+0x2b/0x40
[cfg80211]
[19011.798146] [<ffffffff8108da32>] process_one_work+0x182/0x4e0
[19011.798151] [<ffffffff8108ddfb>] worker_thread+0x6b/0x6a0
[19011.798156] [<ffffffff8108dd90>] ? process_one_work+0x4e0/0x4e0
[19011.798162] [<ffffffff81094c6b>] kthread+0xdb/0x100
[19011.798168] [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
[19011.798175] [<ffffffff81789dfc>] ret_from_fork+0x7c/0xb0
[19011.798181] [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
[19011.798184] ---[ end trace 9074ade8075c79de ]---
[19011.798187] ------------[ cut here ]------------
[19011.798210] WARNING: CPU: 1 PID: 6870 at
/build/buildd/linux-3.16.0/net/mac80211/driver-ops.h:12
ieee80211_request_sched_scan_stop+0x155/0x170 [mac80211]()
[19011.798213] wlan1: Failed check-sdata-in-driver check, flags: 0x0
[19011.798214] Modules linked in: ses enclosure uas usb_storage dm_crypt
btusb arc4 dell_wmi sparse_keymap intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel iwlmvm kvm mac80211 dell_laptop dcdbas
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd iwlwifi snd_hda_codec_hdmi joydev
snd_hda_codec_idt serio_raw snd_hda_codec_generic bnep cfg80211 lpc_ich
dell_smo8800 rfcomm bluetooth 6lowpan_iphc snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi
snd_seq snd_seq_device snd_timer snd mei_me mac_hid shpchp mei soundcore
binfmt_misc parport_pc ppdev tpm_rng lp parport btrfs xor raid6_pq hid_generic
usbhid hid i915 firewire_ohci i2c_algo_bit sdhci_pci sdhci psmouse firewire_core
[19011.798283] ahci e1000e libahci drm_kms_helper drm ptp crc_itu_t pps_core
wmi video
[19011.798295] CPU: 1 PID: 6870 Comm: kworker/1:1 Tainted: G W
3.16.0-28-generic #37-Ubuntu
[19011.798298] Hardware name: Dell Inc. Latitude E6520/0NVF5K, BIOS A19
11/14/2013
[19011.798312] Workqueue: events cfg80211_rfkill_sync_work [cfg80211]
[19011.798314] 0000000000000009 ffff8801b3c47b58 ffffffff81781e6a
ffff8801b3c47ba0
[19011.798319] ffff8801b3c47b90 ffffffff8106fedd 0000000000000000
ffff880035adc680
[19011.798326] ffff880035add3b8 00000000fffffffb ffff88022136a8c0
ffff8801b3c47bf0
[19011.798333] Call Trace:
[19011.798341] [<ffffffff81781e6a>] dump_stack+0x45/0x56
[19011.798350] [<ffffffff8106fedd>] warn_slowpath_common+0x7d/0xa0
[19011.798357] [<ffffffff8106ff4c>] warn_slowpath_fmt+0x4c/0x50
[19011.798365] [<ffffffff8177e1af>] ? printk+0x63/0x6b
[19011.798386] [<ffffffffc06b17d5>]
ieee80211_request_sched_scan_stop+0x155/0x170 [mac80211]
[19011.798412] [<ffffffffc06c0e4d>] ieee80211_sched_scan_stop+0x2d/0x40
[mac80211]
[19011.798440] [<ffffffffc0538e38>] __cfg80211_stop_sched_scan+0x58/0x130
[cfg80211]
[19011.798459] [<ffffffffc052f633>]
cfg80211_netdev_notifier_call+0x5c3/0x630 [cfg80211]
[19011.798465] [<ffffffff8167acab>] ? __dev_remove_pack+0x8b/0xb0
[19011.798471] [<ffffffff81761cbc>] ? __unregister_prot_hook+0xcc/0xd0
[19011.798477] [<ffffffff8109972d>] notifier_call_chain+0x4d/0x70
[19011.798482] [<ffffffff81099856>] raw_notifier_call_chain+0x16/0x20
[19011.798532] [<ffffffff8167b4d5>] call_netdevice_notifiers_info+0x35/0x60
[19011.798551] [<ffffffff8167b878>] dev_close_many+0xc8/0x120
[19011.798558] [<ffffffff8167da46>] dev_close.part.71+0x36/0x50
[19011.798566] [<ffffffff8167da81>] dev_close+0x21/0x30
[19011.798587] [<ffffffffc052e8e5>]
cfg80211_shutdown_all_interfaces+0x45/0xc0 [cfg80211]
[19011.798607] [<ffffffffc052e98b>] cfg80211_rfkill_sync_work+0x2b/0x40
[cfg80211]
[19011.798614] [<ffffffff8108da32>] process_one_work+0x182/0x4e0
[19011.798620] [<ffffffff8108ddfb>] worker_thread+0x6b/0x6a0
[19011.798627] [<ffffffff8108dd90>] ? process_one_work+0x4e0/0x4e0
[19011.798634] [<ffffffff81094c6b>] kthread+0xdb/0x100
[19011.798643] [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
[19011.798650] [<ffffffff81789dfc>] ret_from_fork+0x7c/0xb0
[19011.798658] [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
[19011.798663] ---[ end trace 9074ade8075c79df ]---
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-28-generic 3.16.0-28.37
ProcVersionSignature: Ubuntu 3.16.0-28.37-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bonnaudl 3477 F.... pulseaudio
CurrentDesktop: KDE
Date: Thu Dec 11 18:55:50 2014
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=cf81afe7-8427-45fa-9149-c11d060a5a26
MachineType: Dell Inc. Latitude E6520
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic
root=UUID=749a9901-bdd3-4b5f-b80e-69414667e058 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-28-generic N/A
linux-backports-modules-3.16.0-28-generic N/A
linux-firmware 1.138
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/14/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A19
dmi.board.name: 0NVF5K
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA19:bd11/14/2013:svnDellInc.:pnLatitudeE6520:pvr01:rvnDellInc.:rn0NVF5K:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6520
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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