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Message-ID: <4926809C.3020603@gmail.com> Date: Fri, 21 Nov 2008 03:34:20 -0600 From: Roger Heflin <rogerheflin@...il.com> To: Matt Carlson <mcarlson@...adcom.com> CC: Peter Zijlstra <peterz@...radead.org>, LKML <linux-kernel@...r.kernel.org>, netdev <netdev@...r.kernel.org> Subject: Re: WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0xfe/0x17e() with tg3 network Matt Carlson wrote: > On Thu, Nov 20, 2008 at 02:07:42AM -0800, Roger Heflin wrote: >> Matt Carlson wrote: > > Yes, I remember hearing something about this problem too. That is a firmware > problem though. The 5789 does not have any management firmware, so that > shouldn't be the case here. > Gotcha. >>>> If someone else runs into this issue, since I have 2 ports I would be >>>> able to do some testing on it, right now my first port is locked up, and >>>> the machine is running fine on the second port. >>>> >>>> lspci -vvv for the first (bad) port: >>> Ah. There it is. >>> >>>> 02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5789 Gigabit >>>> Ethernet PCI Express (rev 11) >>>> Subsystem: Foxconn International, Inc. Unknown device 0cc1 >>>> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- >>>> Stepping- SERR- FastB2B- >>>> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- >>>> <MAbort- >SERR- <PERR- >>>> Latency: 0, Cache Line Size: 32 bytes >>>> Interrupt: pin A routed to IRQ 19 >>>> Region 0: Memory at fd8f0000 (64-bit, non-prefetchable) [size=64K] >>>> Expansion ROM at <ignored> [disabled] >>>> Capabilities: [48] Power Management version 2 >>>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA >>>> PME(D0-,D1-,D2-,D3hot+,D3cold+) >>>> Status: D3 PME-Enable- DSel=0 DScale=1 PME- >>>> Capabilities: [50] Vital Product Data >>>> Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 >>>> Enable- >>>> Address: 0101b8102a0f7b0c Data: f21e >>>> Capabilities: [d0] Express Endpoint IRQ 0 >>>> Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag+ >>>> Device: Latency L0s <4us, L1 unlimited >>>> Device: AtnBtn- AtnInd- PwrInd- >>>> Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported- >>>> Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- >>>> Device: MaxPayload 128 bytes, MaxReadReq 4096 bytes >>>> Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s, Port 0 >>>> Link: Latency L0s <2us, L1 <64us >>>> Link: ASPM Disabled RCB 64 bytes CommClk+ ExtSynch- >>>> Link: Speed 2.5Gb/s, Width x1 >>>> Capabilities: [100] Advanced Error Reporting >>>> Capabilities: [13c] Virtual Channel >>> Hmmm. No smoking gun. Perhaps the register dump will help. >>> >> driver: tg3 >> version: 3.94 >> firmware-version: 5789-v3.29a >> bus-info: 0000:02:00.0 > > O.K. I'll see if I can find any problems like this in the firmware > archives. > >> tg3.c:v3.94 (August 14, 2008) >> tg3 0000:02:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 >> tg3 0000:02:00.0: setting latency timer to 64 >> tg3 0000:05:01.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 >> tg3: eth0: Link is up at 1000 Mbps, full duplex. >> tg3: eth0: Flow control is on for TX and on for RX. >> >> Right now I brought the interface back up (it is still broken) and setup a >> network ip on it that other machines can ping. >> >> The registers are included at the end of the email. > > O.K. I'll pour over the dump and get back to you. > > More below. > >>>>>> Nov 11 00:44:39 computer kernel: ------------[ cut here ]------------ >>>>>> Nov 11 00:44:39 computer kernel: WARNING: at net/sched/sch_generic.c:219 >>>>>> dev_watchdog+0xfe/0x17e() >>>>>> Nov 11 00:44:39 computer kernel: NETDEV WATCHDOG: eth0 (tg3): transmit timed out >>> Usually the tg3_tx_timeout function dumps a few registers before >>> resetting the chip, but I don't see that here. Have you seen any dumps >>> since then? >> Is this the dump? > > This would be it. Thanks. > >> Nov 12 14:58:13 computer kernel: tg3: eth0: transmit timed out, resetting >> Nov 12 14:58:13 computer kernel: tg3: DEBUG: MAC_TX_STATUS[00000008] >> MAC_RX_STATUS[00000006] >> Nov 12 14:58:13 computer kernel: tg3: DEBUG: RDMAC_STATUS[00000010] >> WDMAC_STATUS[00000000] > > Here the Read DMA Status register is reporting a Read DMA PCI Parity Error. > I've seen this before...very recently in fact. The problem was that the > chipset was not programmed by the BIOS correctly. In that particular case, > a BIOS upgrade solved the problem. YMMV. The board I have is a OLD board (but new to me) and I have what appears to be the last bios that was officially released for it, and cannot find any newer updates that what I have. > >> Nov 12 14:58:13 computer kernel: tg3: tg3_stop_block timed out, ofs=2c00 >> enable_bit=2 >> Nov 12 14:58:13 computer kernel: tg3: tg3_stop_block timed out, ofs=1400 >> enable_bit=2 >> Nov 12 14:58:13 computer kernel: tg3: tg3_stop_block timed out, ofs=4800 >> enable_bit=2 >> Nov 12 14:58:13 computer kernel: tg3: eth0: Link is down. >> Nov 12 14:58:16 computer kernel: tg3: eth0: Link is up at 1000 Mbps, full duplex. >> Nov 12 14:58:16 computer kernel: tg3: eth0: Flow control is on for TX and on for RX. >> Nov 12 15:20:37 computer kernel: tg3: eth0: transmit timed out, resetting >> Nov 12 15:20:37 computer kernel: tg3: DEBUG: MAC_TX_STATUS[0000000b] >> MAC_RX_STATUS[00000000] >> Nov 12 15:20:37 computer kernel: tg3: DEBUG: RDMAC_STATUS[00000000] >> WDMAC_STATUS[00000000] > > Here the MAC TX Status register is reporting that the link is up, but > the device is sending pause frames and rx is currently rx off'd. > > Does the same problem happen if flow control is disabled? > I have disabled flow control (live) but not rebooted yet I won't have time to reboot and test until sometime tomorrow. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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