Public bug reported:
I was not doing anything special when this trace occured:
Dec 9 19:03:10 simon-laptop kernel: [86066.592153] ------------[ cut here
]------------
Dec 9 19:03:10 simon-laptop kernel: [86066.592184] WARNING: at
/build/buildd/linux-3.2.0/drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:927
iwl_tx_cmd_complete+0x220/0x260 [iwlwifi]()
Dec 9 19:03:10 simon-laptop kernel: [86066.592190] Hardware name: 2516CTO
Dec 9 19:03:10 simon-laptop kernel: [86066.592194] wrong command queue 5
(should be 4), sequence 0x65A1 readp=223 writep=223
Dec 9 19:03:10 simon-laptop kernel: [86066.592197] Modules linked in: nls_utf8
isofs joydev iwlwifi ebtable_nat ebtables kvm_intel kvm deflate zlib_deflate
ctr twofish_generic twofish_x86_64_3way twofish_x86_64 twofish_common camellia
serpent blowfish_generic blowfish_x86_64 blowfish_common cast5 des_generic xcbc
rmd160 sha512_generic crypto_null af_key bridge stp nfsd nfs lockd fscache
auth_rpcgss nfs_acl ip6t_LOG nf_conntrack_ipv6 nf_defrag_ipv6 sunrpc
ip6table_filter ip6_tables ipt_LOG xt_owner xt_conntrack iptable_filter
ipt_MASQUERADE xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack
nf_defrag_ipv4 ip_tables x_tables snd_hda_codec_hdmi snd_hda_codec_conexant
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm arc4 snd_seq_midi snd_rawmidi
snd_seq_midi_event thinkpad_acpi dm_multipath sdhci_pci e1000e firewire_ohci
firewire_core sdhci snd_seq snd_timer snd_seq_device intel_ips mac80211 snd
psmouse serio_raw cfg80211 soundcore snd_page_alloc nvram crc_itu_t dm_crypt
mxm_wmi i915 usbhid drm_kms_helper hid drm m
Dec 9 19:03:10 simon-laptop kernel: ac_hid i2c_algo_bit wmi video [last
unloaded: iwlwifi]
Dec 9 19:03:10 simon-laptop kernel: [86066.592315] Pid: 0, comm: swapper/0 Not
tainted 3.2.0-35-generic #55-Ubuntu
Dec 9 19:03:10 simon-laptop kernel: [86066.592319] Call Trace:
Dec 9 19:03:10 simon-laptop kernel: [86066.592322] <IRQ>
[<ffffffff81067f0f>] warn_slowpath_common+0x7f/0xc0
Dec 9 19:03:10 simon-laptop kernel: [86066.592338] [<ffffffff81068006>]
warn_slowpath_fmt+0x46/0x50
Dec 9 19:03:10 simon-laptop kernel: [86066.592347] [<ffffffff8116365b>] ?
kfree+0x3b/0x140
Dec 9 19:03:10 simon-laptop kernel: [86066.592365] [<ffffffffa06df720>]
iwl_tx_cmd_complete+0x220/0x260 [iwlwifi]
Dec 9 19:03:10 simon-laptop kernel: [86066.592385] [<ffffffffa06db837>]
iwl_rx_handle+0x2e7/0x4f0 [iwlwifi]
Dec 9 19:03:10 simon-laptop kernel: [86066.592403] [<ffffffffa06dc234>]
iwl_irq_tasklet+0x3e4/0xb10 [iwlwifi]
Dec 9 19:03:10 simon-laptop kernel: [86066.592411] [<ffffffff813e3091>] ?
add_interrupt_randomness+0x41/0x190
Dec 9 19:03:10 simon-laptop kernel: [86066.592419] [<ffffffff8106f0a8>]
tasklet_action+0x78/0x140
Dec 9 19:03:10 simon-laptop kernel: [86066.592424] [<ffffffff8106f6e8>]
__do_softirq+0xa8/0x210
Dec 9 19:03:10 simon-laptop kernel: [86066.592432] [<ffffffff8165cfde>] ?
_raw_spin_lock+0xe/0x20
Dec 9 19:03:10 simon-laptop kernel: [86066.592438] [<ffffffff8166782c>]
call_softirq+0x1c/0x30
Dec 9 19:03:10 simon-laptop kernel: [86066.592446] [<ffffffff81016305>]
do_softirq+0x65/0xa0
Dec 9 19:03:10 simon-laptop kernel: [86066.592450] [<ffffffff8106face>]
irq_exit+0x8e/0xb0
Dec 9 19:03:10 simon-laptop kernel: [86066.592456] [<ffffffff816680e3>]
do_IRQ+0x63/0xe0
Dec 9 19:03:10 simon-laptop kernel: [86066.592461] [<ffffffff8165d46e>]
common_interrupt+0x6e/0x6e
Dec 9 19:03:10 simon-laptop kernel: [86066.592464] <EOI>
[<ffffffff8109ceb4>] ? tick_program_event+0x24/0x30
Dec 9 19:03:10 simon-laptop kernel: [86066.592478] [<ffffffff8136d4bd>] ?
intel_idle+0xed/0x150
Dec 9 19:03:10 simon-laptop kernel: [86066.592483] [<ffffffff8136d49f>] ?
intel_idle+0xcf/0x150
Dec 9 19:03:10 simon-laptop kernel: [86066.592490] [<ffffffff815082d1>]
cpuidle_idle_call+0xc1/0x280
Dec 9 19:03:10 simon-laptop kernel: [86066.592496] [<ffffffff8101322a>]
cpu_idle+0xca/0x120
Dec 9 19:03:10 simon-laptop kernel: [86066.592503] [<ffffffff816235ee>]
rest_init+0x72/0x74
Dec 9 19:03:10 simon-laptop kernel: [86066.592510] [<ffffffff81cfbc03>]
start_kernel+0x3b0/0x3bd
Dec 9 19:03:10 simon-laptop kernel: [86066.592516] [<ffffffff81cfb388>]
x86_64_start_reservations+0x132/0x136
Dec 9 19:03:10 simon-laptop kernel: [86066.592522] [<ffffffff81cfb140>] ?
early_idt_handlers+0x140/0x140
Dec 9 19:03:10 simon-laptop kernel: [86066.592528] [<ffffffff81cfb459>]
x86_64_start_kernel+0xcd/0xdc
Dec 9 19:03:10 simon-laptop kernel: [86066.592532] ---[ end trace
bd60e659b94ffac2 ]---
There is a bunch of other iwlwifi messages right after this trace which
are in the attached log extract. Recently (maybe since kernel 3.2.0-34)
I noticed frequent Wifi drop outs that are manifesting like this in the
logs:
Dec 9 19:03:50 simon-laptop kernel: [86106.614633] iwlwifi
0000:03:00.0: Tx aggregation enabled on ra = 2c:b0:5d:9c:73:39 tid = 0
Usual information:
$ lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04
$ apt-cache policy linux-image-3.2.0-35-generic
linux-image-3.2.0-35-generic:
Installed: 3.2.0-35.55
Candidate: 3.2.0-35.55
Version table:
*** 3.2.0-35.55 0
500 http://archive.ubuntu.com/ubuntu/ precise-proposed/main amd64
Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-35-generic 3.2.0-35.55
ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
Uname: Linux 3.2.0-35-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: simon 4142 F.... pulseaudio
/dev/snd/pcmC0D0p: simon 4142 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 44'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:14f15069,17aa214c,00100302
HDA:80862804,17aa21b5,00100000'
Controls : 26
Simple ctrls : 8
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw
6IHT43WW-1.18'
Mixer name : 'ThinkPad EC 6IHT43WW-1.18'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Mon Dec 10 12:19:12 2012
HibernationDevice: RESUME=/dev/dm-8
MachineType: LENOVO 2516CTO
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_CA:en
TERM=xterm
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic
root=/dev/mapper/crypt-root ro quiet splash i915.i915_enable_fbc=1
i915.lvds_downclock=1 drm.vblankoffdelay=1 possible_cpus=4 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-35-generic N/A
linux-backports-modules-3.2.0-35-generic N/A
linux-firmware 1.79.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/12/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET83WW (1.43 )
dmi.board.name: 2516CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr6IET83WW(1.43):bd04/12/2012:svnLENOVO:pn2516CTO:pvrThinkPadT410:rvnLENOVO:rn2516CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2516CTO
dmi.product.version: ThinkPad T410
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug package-from-proposed precise running-unity
** Attachment added: "syslog extract"
https://bugs.launchpad.net/bugs/1088570/+attachment/3456417/+files/syslog
** Attachment removed: "WifiSyslog.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1088570/+attachment/3456437/+files/WifiSyslog.txt
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https://bugs.launchpad.net/bugs/1088570
Title:
iwlwifi stack trace
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