Message-Id: <20091004174535.777d233c.kristoffer.ericson@gmail.com>
Date:	Sun, 4 Oct 2009 17:45:35 +0200
From:	Kristoffer Ericson <kristoffer.ericson@...il.com>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	Stefan Lippers-Hollmann <s.L-H@....de>,
	linux-wireless@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Disassociating atheros wlan with 2.6.31

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@...il.com> wrote:

> Stefan Lippers-Hollmann wrote:
> > Hi
> >
> > CCing linux-wireless@...r.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@...gieman 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@...il.com>
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