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SubjectRe: Disassociating atheros wlan with 2.6.31

Another confirmed instance of this on ath9k - on 2.6.31.2 and 2.6.31.3 - didn't
happen on 2.6.30.6 or 2.6.30.9. A couple other interesting facts:

- it seems to be related (at least in my case) to heavy transmit load -
I can download a kernel tarball without it failing, but if I try to
copy it to another system, it fails within 2 seconds reliably...
- running 'rmmod ath9k ath mac80211 cfg80211' followed by 'modprobe ath9k'
clears it up

No indication in dmesg except:

wlan<n>: no probe response from AP AA:BB:DD:EE:FF:GG - disassociating

and suddenly no packets going in either direction.

I'm in the process of moving back to 2.6.30.x for now...





On 10/04/2009 17:45 +0200, Kristoffer Ericson wrote:
>> Hi,
>>
>> Did a bisect or more exactly tried to do a bisect. Ive managed to bisect myself
>> into a deadend so far (must have marked good in wrong place). The disassociation happens
>> at seemingly regular intervalls but once I started bisecting it started
>> to be more irregular. Perhaps it was simply due to me not being able
>> to user internet (and share) since my 3G modem oopsed all the time.
>> Suspecting its load sensitive.
>>
>> Anyhow heres what I got so far. The bad versions should be correct
>> while the good versions might not be. Reason being that I didnt wait
>> long enough for the disassociation to appear and thus faulty marking
>> something as good.
>> Using the bad should however narrow it down somewhat. From what
>> I can see between my last good and bad is only non-related stuff,
>> so must be atleast one "good" mistake in there.
>>
>> git bisect start
>> # good: [07a2039b8eb0af4ff464efd3dfd95de5c02648c6] Linux 2.6.30
>> git bisect good 07a2039b8eb0af4ff464efd3dfd95de5c02648c6
>> # bad: [74fca6a42863ffacaf7ba6f1936a9f228950f657] Linux 2.6.31
>> git bisect bad 74fca6a42863ffacaf7ba6f1936a9f228950f657
>> # good: [925d74ae717c9a12d3618eb4b36b9fb632e2cef3] V4L/DVB (11736): videobuf: modify return value of VIDIOC_REQBUFS ioctl
>> git bisect good 925d74ae717c9a12d3618eb4b36b9fb632e2cef3
>> # bad: [a380137900fca5c79e6daa9500bdb6ea5649188e] ixgbe: Fix device capabilities of 82599 single speed fiber NICs.
>> git bisect bad a380137900fca5c79e6daa9500bdb6ea5649188e
>> # bad: [1dbb5765acc7a6fe4bc1957c001037cc9d02ae03] Staging: android: lowmemorykiller: fix up remaining checkpatch warnings
>> git bisect bad 1dbb5765acc7a6fe4bc1957c001037cc9d02ae03
>> # bad: [2b1b62e841867326fa260a581d97941c32abc35b] MIPS: Cavium-Octeon: Add more board type constants.
>> git bisect bad 2b1b62e841867326fa260a581d97941c32abc35b
>> # good: [517d08699b250021303f9a7cf0d758b6dc0748ed] Merge branch 'akpm'
>> git bisect good 517d08699b250021303f9a7cf0d758b6dc0748ed
>> # good: [5e2c217eee18a4627a32c49f57f47dbac67dcf23] V4L/DVB (11958): usbvision-core.c: vfree does its own NULL check
>> git bisect good 5e2c217eee18a4627a32c49f57f47dbac67dcf23
>> # bad: [a9349315f65cd6a16e8fab1f6cf0fd40f379c4db] V4L/DVB (11819): Siano: smscore - fix get_common_buffer bug
>> git bisect bad a9349315f65cd6a16e8fab1f6cf0fd40f379c4db
>> # good: [06f837cadbcdedb45f0702cb57c99c404ae921e6] V4L/DVB (11784): cx88: Fix race condition between cx8800 startup and hald
>> git bisect good 06f837cadbcdedb45f0702cb57c99c404ae921e6
>> # good: [1339f9108a84710969903e892dcf1849ae1215cf] V4L/DVB (11726): Modify the file license to match all other Siano's files
>> git bisect good 1339f9108a84710969903e892dcf1849ae1215cf
>>
>> Best wishes
>> Kristoffer Ericson
>>
>> On Thu, 24 Sep 2009 13:07:12 -0700
>> "Justin P. Mattock" <justinmattock@gmail.com> wrote:
>>
>> > Stefan Lippers-Hollmann wrote:
>> > > Hi
>> > >
>> > > CCing linux-wireless@vger.kernel.org, as it's not very likely to get
>> > > noticed here by wireless developers.
>> > >
>> > > On Thursday 24 September 2009, Justin P. Mattock wrote:
>> > >
>> > >> Kristoffer Ericson wrote:
>> > >>
>> > >>> Greetings,
>> > >>>
>> > >>> When moving from vanilla 2.6.30->2.6.31 I noticed that I get dissasociated from
>> > >>> my wlan hub with regular intervalls. This did not happen on 2.6.30.
>> > >>> I cant see any pattern aside from that it happens at regular intervalls
>> > >>> (around 10-15mins). It works again when I re-identifies myself.
>> > >>>
>> > >>> Got an Asus 1000HE with Atheros chipset.
>> > >>> Havent had time to bisect it, just wanted to check
>> > >>> if this is an known issue. Ive ruled out faulty wlan hub
>> > >>> since everything works fine when going back to 2.6.30.
>> > >>>
>> > >>> nothing much on dmesg:
>> > >>> uhci_hcd 0000:00:1d.1: UHCI Host Controller
>> > >>> uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
>> > >>> uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000d480
>> > >>> usb usb3: configuration #1 chosen from 1 choice
>> > >>> hub 3-0:1.0: USB hub found
>> > >>> hub 3-0:1.0: 2 ports detected
>> > >>> uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
>> > >>> uhci_hcd 0000:00:1d.2: setting latency timer to 64
>> > >>> uhci_hcd 0000:00:1d.2: UHCI Host Controller
>> > >>> uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
>> > >>> uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000d800
>> > >>> usb usb4: configuration #1 chosen from 1 choice
>> > >>> hub 4-0:1.0: USB hub found
>> > >>> hub 4-0:1.0: 2 ports detected
>> > >>> uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) -> IRQ 16
>> > >>> uhci_hcd 0000:00:1d.3: setting latency timer to 64
>> > >>> uhci_hcd 0000:00:1d.3: UHCI Host Controller
>> > >>> uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
>> > >>> uhci_hcd 0000:00:1d.3: irq 16, io base 0x0000d880
>> > >>> usb usb5: configuration #1 chosen from 1 choice
>> > >>> hub 5-0:1.0: USB hub found
>> > >>> hub 5-0:1.0: 2 ports detected
>> > >>> input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input7
>> > >>> usb 1-4: new high speed USB device using ehci_hcd and address 3
>> > >>> usb 1-4: configuration #1 chosen from 1 choice
>> > >>> hub 1-4:1.0: USB hub found
>> > >>> hub 1-4:1.0: 4 ports detected
>> > >>> usb 1-5: new high speed USB device using ehci_hcd and address 4
>> > >>> usb 1-5: configuration #1 chosen from 1 choice
>> > >>> usb 1-8: new high speed USB device using ehci_hcd and address 6
>> > >>> usb 1-8: configuration #1 chosen from 1 choice
>> > >>> Initializing USB Mass Storage driver...
>> > >>> scsi4 : SCSI emulation for USB Mass Storage devices
>> > >>> usbcore: registered new interface driver usb-storage
>> > >>> USB Mass Storage support registered.
>> > >>> usb-storage: device found at 4
>> > >>> usb-storage: waiting for device to settle before scanning
>> > >>> HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
>> > >>> HDA Intel 0000:00:1b.0: setting latency timer to 64
>> > >>> usb 2-2: new full speed USB device using uhci_hcd and address 2
>> > >>> ath9k 0000:01:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
>> > >>> ath9k 0000:01:00.0: setting latency timer to 64
>> > >>> usb 2-2: configuration #1 chosen from 1 choice
>> > >>> input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input8
>> > >>> usbcore: registered new interface driver usbserial
>> > >>> USB Serial support registered for generic
>> > >>> usb 5-1: new full speed USB device using uhci_hcd and address 2
>> > >>> usb 5-1: configuration #1 chosen from 1 choice
>> > >>> usb 1-4.1: new full speed USB device using ehci_hcd and address 7
>> > >>> ath: EEPROM regdomain: 0x60
>> > >>> ath: EEPROM indicates we should expect a direct regpair map
>> > >>> ath: Country alpha2 being used: 00
>> > >>> ath: Regpair used: 0x60
>> > >>> Bluetooth: Core ver 2.15
>> > >>> NET: Registered protocol family 31
>> > >>> Bluetooth: HCI device and connection manager initialized
>> > >>> Bluetooth: HCI socket layer initialized
>> > >>> Bluetooth: Generic Bluetooth USB driver ver 0.5
>> > >>> usb 1-4.1: configuration #1 chosen from 1 choice
>> > >>> usb 1-4.2: new low speed USB device using ehci_hcd and address 8
>> > >>> usb 1-4.2: configuration #1 chosen from 1 choice
>> > >>> usb 1-4.4: new low speed USB device using ehci_hcd and address 9
>> > >>> usbcore: registered new interface driver hiddev
>> > >>> input: HID 04d9:1203 as /devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.2/1-4.2:1.0/input/input9
>> > >>> generic-usb 0003:04D9:1203.0001: input,hidraw0: USB HID v1.11 Keyboard [HID 04d9:1203] on usb-0000:00:1d.7-4.2/input0
>> > >>> input: HID 04d9:1203 as /devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.2/1-4.2:1.1/input/input10
>> > >>> generic-usb 0003:04D9:1203.0002: input,hidraw1: USB HID v1.11 Device [HID 04d9:1203] on usb-0000:00:1d.7-4.2/input1
>> > >>> usbcore: registered new interface driver usbhid
>> > >>> usbhid: v2.6:USB HID core driver
>> > >>> usb 1-4.4: configuration #1 chosen from 1 choice
>> > >>> input: B16_b_02 USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.4/1-4.4:1.0/input/input11
>> > >>> generic-usb 0003:046D:C025.0003: input,hidraw2: USB HID v1.10 Mouse [B16_b_02 USB-PS/2 Optical Mouse] on usb-0000:00:1d.7-4.4/input0
>> > >>> usbcore: registered new interface driver btusb
>> > >>> usbcore: registered new interface driver usbserial_generic
>> > >>> usbserial: USB Serial Driver core
>> > >>> USB Serial support registered for GSM modem (1-port)
>> > >>> option 2-2:1.0: GSM modem (1-port) converter detected
>> > >>> usb 2-2: GSM modem (1-port) converter now attached to ttyUSB0
>> > >>> option 2-2:1.1: GSM modem (1-port) converter detected
>> > >>> usb 2-2: GSM modem (1-port) converter now attached to ttyUSB1
>> > >>> usbcore: registered new interface driver option
>> > >>> option: v0.7.2:USB Driver for GSM modems
>> > >>> USB Serial support registered for pl2303
>> > >>> pl2303 1-4.1:1.0: pl2303 converter detected
>> > >>> usb 1-4.1: pl2303 converter now attached to ttyUSB2
>> > >>> usbcore: registered new interface driver pl2303
>> > >>> pl2303: Prolific PL2303 USB to serial adaptor driver
>> > >>> phy0: Selected rate control algorithm 'ath9k_rate_control'
>> > >>> Registered led device: ath9k-phy0::radio
>> > >>> Registered led device: ath9k-phy0::assoc
>> > >>> Registered led device: ath9k-phy0::tx
>> > >>> Registered led device: ath9k-phy0::rx
>> > >>> phy0: Atheros AR9280 MAC/BB Rev:2 AR5133 RF Rev:d0: mem=0xf8880000, irq=19
>> > >>> scsi 4:0:0:0: Direct-Access Single Flash Reader 1.00 PQ: 0 ANSI: 0
>> > >>> sd 4:0:0:0: Attached scsi generic sg1 type 0
>> > >>> sd 4:0:0:0: [sdb] 15954944 512-byte logical blocks: (8.16 GB/7.60 GiB)
>> > >>> usb-storage: device scan complete
>> > >>> sd 4:0:0:0: [sdb] Write Protect is off
>> > >>> sd 4:0:0:0: [sdb] Mode Sense: 03 00 00 00
>> > >>> sd 4:0:0:0: [sdb] Assuming drive cache: write through
>> > >>> sd 4:0:0:0: [sdb] Assuming drive cache: write through
>> > >>> sdb: sdb1
>> > >>> sd 4:0:0:0: [sdb] Assuming drive cache: write through
>> > >>> sd 4:0:0:0: [sdb] Attached SCSI removable disk
>> > >>> EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
>> > >>> EXT3 FS on sda1, internal journal
>> > >>> Bluetooth: L2CAP ver 2.13
>> > >>> Bluetooth: L2CAP socket layer initialized
>> > >>> Bluetooth: SCO (Voice Link) ver 0.6
>> > >>> Bluetooth: SCO socket layer initialized
>> > >>> Bluetooth: BNEP (Ethernet Emulation) ver 1.3
>> > >>> Bridge firewalling registered
>> > >>> Bluetooth: RFCOMM TTY layer initialized
>> > >>> Bluetooth: RFCOMM socket layer initialized
>> > >>> Bluetooth: RFCOMM ver 1.11
>> > >>> ATL1E 0000:03:00.0: irq 27 for MSI/MSI-X
>> > >>> fuse init (API version 7.12)
>> > >>> ip_tables: (C) 2000-2006 Netfilter Core Team
>> > >>> nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
>> > >>> CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
>> > >>> nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
>> > >>> sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
>> > >>> wlan0: authenticate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: authenticated
>> > >>> wlan0: associate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: RX AssocResp from 00:14:7c:ae:d1:90 (capab=0x431 status=0 aid=5)
>> > >>> wlan0: associated
>> > >>> PPP generic driver version 2.4.2
>> > >>> NET: Registered protocol family 10
>> > >>> lo: Disabled Privacy Extensions
>> > >>> ADDRCONF(NETDEV_UP): eth0: link is not ready
>> > >>> PPP BSD Compression module registered
>> > >>> PPP Deflate Compression module registered
>> > >>> wlan0: no IPv6 routers present
>> > >>> CE: hpet increasing min_delta_ns to 15000 nsec
>> > >>> wlan0: no probe response from AP 00:14:7c:ae:d1:90 - disassociating
>> > >>> wlan0: authenticate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: authenticated
>> > >>> wlan0: associate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: RX AssocResp from 00:14:7c:ae:d1:90 (capab=0x431 status=0 aid=5)
>> > >>> wlan0: associated
>> > >>> wlan0: authenticate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: authenticated
>> > >>> wlan0: associate with AP 00:14:7c:ae:d1:90
>> > >>> wlan0: RX AssocResp from 00:14:7c:ae:d1:90 (capab=0x431 status=0 aid=5)
>> > >>> wlan0: associated
>> > >>> [kristoffer@boggieman wine.git]$
>> > >>>
>> > >>>
>> > >>>
>> > >>>
>> > >> yeah I'm seeing this with my macbook pro(ath9k)
>> > >> while streaming music, all of a sudden things just crap out.
>> > >> (not sure if this is why, or something else).
>> > >>
>> > >> Justin P. Mattock
>> > >>
>> > >
>> > > I'm getting similar reports for iwl3945 and 2.6.31.[01], but can't confirm
>> > > this on my own (non-iwl{3945,agn}, non-ath9k) hardware yet.
>> > >
>> > > Regards
>> > > Stefan Lippers-Hollmann
>> > >
>> > >
>> > I don't mind doing a bisect from 30 - present, but first I need to
>> > do some other stuff.
>> >
>> > Justin P. Mattock
>>
>>
>> --
>> Kristoffer Ericson <kristoffer.ericson@gmail.com>
>> --
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