Return-path: Received: from smtp1.linux-foundation.org ([207.189.120.13]:53475 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752251AbYBZGjG (ORCPT ); Tue, 26 Feb 2008 01:39:06 -0500 Date: Mon, 25 Feb 2008 22:38:23 -0800 From: Andrew Morton To: Tim Connors Cc: kernel list , linux-wireless@vger.kernel.org Subject: Re: iwl4965 dropping packets and __dev_addr_discard: address leakage! da_users=1 Message-Id: <20080225223823.db13a7fe.akpm@linux-foundation.org> (sfid-20080226_063910_557503_849EE5CE) In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, 26 Feb 2008 16:22:43 +1100 Tim Connors wrote: > Possibly because of the frequent renegotiating my iwl4965 card has > been making, it has now decided it's not going to pass packets > reliably until presumably next time I reboot. > > I've noticed messages in syslog that I hadn't seen when things were > working fine. The problem possibly has only surfaced after rmmodding > the iwl4965 module, then remodding it. It stays with me through being > removed and modprobed again. It is being bonded in conjunction with a > physical ethernet, if that is relevant, although I think I reproduced > it when it was on its lonesome. > > > Fresh after reboot: > > Feb 22 09:49:31 dirac kernel: iwl4965: Intel(R) Wireless WiFi Link 4965AGN driver for Linux, 1.1.17kds > Feb 22 09:49:31 dirac kernel: iwl4965: Copyright(c) 2003-2007 Intel Corporation > Feb 22 09:49:31 dirac kernel: ACPI: PCI Interrupt 0000:0c:00.0[A] -> GSI 17 (level, low) -> IRQ 17 > Feb 22 09:49:31 dirac kernel: PCI: Setting latency timer of device 0000:0c:00.0 to 64 > Feb 22 09:49:31 dirac kernel: iwl4965: Detected Intel Wireless WiFi Link 4965AGN > Feb 22 09:49:31 dirac kernel: ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 21 (level, low) -> IRQ 21 > Feb 22 09:49:31 dirac kernel: PCI: Setting latency timer of device 0000:00:1b.0 to 64 > Feb 22 09:49:31 dirac kernel: iwl4965: Tunable channels: 11 802.11bg, 13 802.11a channels > Feb 22 09:49:31 dirac kernel: phy0: Selected rate control algorithm 'iwl-4965-rs' > > now finished with it, will be deconfigured and rmmodded: > > Feb 23 03:05:23 dirac kernel: __dev_addr_discard: address leakage! da_users=1 > Feb 23 03:05:23 dirac kernel: ACPI: PCI interrupt for device 0000:0c:00.0 disabled > > The modprobed again: > > Feb 23 03:05:35 dirac kernel: iwl4965: Intel(R) Wireless WiFi Link 4965AGN driver for Linux, 1.1.17kds > Feb 23 03:05:35 dirac kernel: iwl4965: Copyright(c) 2003-2007 Intel Corporation > Feb 23 03:05:35 dirac kernel: ACPI: PCI Interrupt 0000:0c:00.0[A] -> GSI 17 (level, low) -> IRQ 17 > Feb 23 03:05:35 dirac kernel: PCI: Setting latency timer of device 0000:0c:00.0 to 64 > Feb 23 03:05:35 dirac kernel: iwl4965: Detected Intel Wireless WiFi Link 4965AGN > Feb 23 03:05:35 dirac kernel: iwl4965: Tunable channels: 11 802.11bg, 13 802.11a channels > Feb 23 03:05:35 dirac kernel: phy9: Selected rate control algorithm 'iwl-4965-rs' > > according to lspci -vvv, 0c:00.0 is: > > 0c:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN Network Connection (rev 61) > Subsystem: Intel Corporation Unknown device 1120 > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0, Cache Line Size: 64 bytes > Interrupt: pin A routed to IRQ 379 > Region 0: Memory at f9ffe000 (64-bit, non-prefetchable) [size=8K] > Capabilities: [c8] Power Management version 3 > Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+ > Address: 00000000fee0300c Data: 4194 > Capabilities: [e0] Express (v1) Endpoint, MSI 00 > DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited > ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- > RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ > MaxPayload 128 bytes, MaxReadReq 128 bytes > DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend- > LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <64us > ClockPM+ Suprise- LLActRep- BwNot- > LnkCtl: ASPM L0s Enabled; RCB 64 bytes Disabled- Retrain- CommClk+ > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- > Capabilities: [100] Advanced Error Reporting > Capabilities: [140] Device Serial Number d7-36-9b-ff-ff-e8-13-00 > Kernel driver in use: iwl4965 > Kernel modules: iwl4965 (cc linux-wireless) What kernel version is this? Is this a regression from an earlier kenrel version? If so, which?