Date:	Mon, 10 Jan 2011 15:04:34 -0500
From:	Stephen Clark <sclark46@...thlink.net>
To:	Matt Carlson <mcarlson@...adcom.com>
CC:	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Michael Chan <mchan@...adcom.com>
Subject: Re: panic in tg3 driver

On 01/10/2011 02:22 PM, Matt Carlson wrote:
> On Sun, Jan 09, 2011 at 02:30:50PM -0800, Stephen Clark wrote:
>    
>> On 01/04/2011 09:54 AM, Stephen Clark wrote:
>>      
>>> Hello,
>>>
>>>
>>> The hardware is an Acrosser AR-M0898B micro box.
>>>   lspci
>>> 00:00.0 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro
>>> Host Bridge
>>> 00:00.1 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro
>>> Host Bridge
>>> 00:00.2 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro
>>> Host Bridge
>>> 00:00.3 Host bridge: VIA Technologies, Inc. PT890 Host Bridge
>>> 00:00.4 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro
>>> Host Bridge
>>> 00:00.7 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro
>>> Host Bridge
>>> 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237/VX700 PCI Bridge
>>> 00:0f.0 IDE interface: VIA Technologies, Inc. VT8251 Serial ATA
>>> Controller (rev
>>> 20)
>>> 00:0f.1 IDE interface: VIA Technologies, Inc.
>>> VT82C586A/B/VT82C686/A/B/VT823x/A/
>>> C PIPC Bus Master IDE (rev 07)
>>> 00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
>>> Controller
>>>   (rev 91)
>>> 00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
>>> Controller
>>>   (rev 91)
>>> 00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
>>> Controller
>>>   (rev 91)
>>> 00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
>>> Controller
>>>   (rev 91)
>>> 00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 90)
>>> 00:11.0 ISA bridge: VIA Technologies, Inc. VT8251 PCI to ISA Bridge
>>> 00:11.7 Host bridge: VIA Technologies, Inc. VT8251 Ultra VLINK Controller
>>> 00:13.0 Host bridge: VIA Technologies, Inc. VT8251 Host Bridge
>>> 00:13.1 PCI bridge: VIA Technologies, Inc. VT8251 PCI to PCI Bridge
>>> 02:08.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T
>>> (rev 02)
>>> 02:09.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T
>>> (rev 02)
>>> 80:00.0 PCI bridge: VIA Technologies, Inc. VT8251 PCIE Root Port
>>> 80:00.1 PCI bridge: VIA Technologies, Inc. VT8251 PCIE Root Port
>>> 81:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5906M
>>> Fast Ethernet
>>>   PCI Express (rev 02)
>>> 82:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5906M
>>> Fast Ethernet
>>>   PCI Express (rev 02)
>>>
>>> Kernel 2.6.36-2.el5.elrepo on an i686
>>>
>>> When I try to ifconfig either of the BCM5906M ports the system panics.
>>>
>>> Ideas, fixes ?
>>>
>>> [root@...10 ~]# modprobe tg3
>>> [root@...10 ~]# ifconfig eth2 2.2.2.2/24
>>> ------------[ cut here ]------------
>>> kernel BUG at drivers/net/tg3.c:4365!
>>> invalid opcode: 0000 [#1] PREEMPT SMP
>>> last sysfs file: /sys/class/net/eth3/address
>>> Modules linked in: tg3 xt_tcpudp ipt_LOG xt_limit xt_state
>>> iptable_mangle af_ke]
>>>
>>> Pid: 20303, comm: kworker/0:2 Not tainted 2.6.36-2.el5.elrepo #1
>>> CN700-8251/
>>> EIP: 0060:[<e1c62f19>] EFLAGS: 00010202 CPU: 0
>>> EIP is at tg3_tx_recover+0x1e/0x53 [tg3]
>>> EAX: deece4c0 EBX: dfa9c000 ECX: deece4c0 EDX: ffffffff
>>> ESI: deece4c0 EDI: deece500 EBP: c1801f38 ESP: c1801f30
>>>   DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
>>> Process kworker/0:2 (pid: 20303, ti=c1801000 task=df0105d0
>>> task.ti=dee62000)
>>> Stack:
>>>   dfa9c000 00000000 c1801f6c e1c630be c1801f6c deece4c0 00000840 00000000
>>> <0>  df251cc0 00000005 00000000 df979800 deece500 deece4c0 00000040
>>> c1801f94
>>> <0>  e1c661e5 00000000 00000040 c1801f88 e09df1d2 00000000 deece500
>>> dfab4000
>>> Call Trace:
>>>   [<e1c630be>] ? tg3_tx+0x157/0x1a2 [tg3]
>>>   [<e1c661e5>] ? tg3_poll_work+0x2b/0x10b [tg3]
>>>   [<e09df1d2>] ? ssb_write32+0x11/0x14 [b44]
>>>   [<e1c662f9>] ? tg3_poll+0x34/0x9a [tg3]
>>>   [<c0674058>] ? net_rx_action+0x7e/0x11c
>>>   [<c04409c9>] ? __do_softirq+0x85/0x10c
>>>   [<c0440944>] ? __do_softirq+0x0/0x10c
>>> <IRQ>
>>>   [<c04404ef>] ? _local_bh_enable_ip+0x68/0x87
>>>   [<c044051b>] ? local_bh_enable_ip+0xd/0xf
>>>   [<c046593b>] ? __raw_spin_unlock_bh+0x1c/0x1e
>>>   [<c06fa4f2>] ? _raw_spin_unlock_bh+0xd/0xf
>>>   [<e1c6281f>] ? spin_unlock_bh+0xd/0xf [tg3]
>>>   [<e1c62cbe>] ? tg3_full_unlock+0x10/0x12 [tg3]
>>>   [<e1c664c7>] ? tg3_reset_task+0xd7/0xe3 [tg3]
>>>   [<c044ec37>] ? process_one_work+0x10b/0x1bc
>>>   [<e1c663f0>] ? tg3_reset_task+0x0/0xe3 [tg3]
>>>   [<c044fd41>] ? worker_thread+0x77/0xf9
>>>   [<c0453048>] ? kthread+0x60/0x65
>>>   [<c044fcca>] ? worker_thread+0x0/0xf9
>>>   [<c0452fe8>] ? kthread+0x0/0x65
>>>   [<c040337e>] ? kernel_thread_helper+0x6/0x10
>>> Code: f0 e8 88 ff ff ff 8d 65 f8 5b 5e 5d c3 55 89 e5 56 53 0f 1f 44
>>> 00 00 f6 8
>>> EIP: [<e1c62f19>] tg3_tx_recover+0x1e/0x53 [tg3] SS:ESP 0068:c1801f30
>>> ---[ end trace 82381e9b93e397ad ]---
>>> Kernel panic - not syncing: Fatal exception in interrupt
>>> Pid: 20303, comm: kworker/0:2 Tainted: G      D
>>> 2.6.36-2.el5.elrepo #1
>>> Call Trace:
>>>   [<c043b3cd>] panic+0x62/0x15d
>>>   [<c06fb7d1>] oops_end+0x99/0xa8
>>>   [<e1c62f19>] ? tg3_tx_recover+0x1e/0x53 [tg3]
>>>   [<c0405a62>] die+0x58/0x5e
>>>
>>> Thanks,
>>> Steve
>>>
>>>        
>> Additonal info I compiled the latest kernel 2.6.37-rc8+ and still have the problem.
>> Also boot with noapic I see this in the dmesg log and interrupts are increasing
>> like crazy:
>> tg3.c:v3.115 (October 14, 2010)
>> tg3 0000:81:00.0: PCI INT A ->  Link[LNKA] ->  GSI 10 (level, low) ->  IRQ 10
>> tg3 0000:81:00.0: setting latency timer to 64
>> tg3 0000:81:00.0: PCI: Disallowing DAC for device
>> tg3 0000:81:00.0: eth2: Tigon3 [partno(BCM95906) rev c002] (PCI Express) MAC add
>> ress 00:02:b6:36:d1:39
>> tg3 0000:81:00.0: eth2: attached PHY is 5906 (10/100Base-TX Ethernet) (WireSpeed
>> [0])
>> tg3 0000:81:00.0: eth2: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
>> tg3 0000:81:00.0: eth2: dma_rwctrl[76180000] dma_mask[32-bit]
>> tg3 0000:82:00.0: PCI INT A ->  Link[LNKA] ->  GSI 10 (level, low) ->  IRQ 10
>> tg3 0000:82:00.0: setting latency timer to 64
>> tg3 0000:82:00.0: PCI: Disallowing DAC for device
>> tg3 0000:82:00.0: eth3: Tigon3 [partno(BCM95906) rev c002] (PCI Express) MAC add
>> ress 00:02:b6:36:d1:3a
>> tg3 0000:82:00.0: eth3: attached PHY is 5906 (10/100Base-TX Ethernet) (WireSpeed
>> [0])
>> tg3 0000:82:00.0: eth3: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
>> tg3 0000:82:00.0: eth3: dma_rwctrl[76180000] dma_mask[32-bit]
>> tg3 0000:81:00.0: irq 40 for MSI/MSI-X
>> tg3 0000:81:00.0: eth2: No interrupt was generated using MSI. Switching to INTx
>> mode. Please report this failure to the PCI maintainer and include system chipse
>> t information
>> ADDRCONF(NETDEV_UP): eth2: link is not ready
>> [root@...10 ~]# cat /proc/interrupts
>>              CPU0
>>     0:        162    XT-PIC-XT-PIC    timer
>>     1:          2    XT-PIC-XT-PIC    i8042
>>     2:          0    XT-PIC-XT-PIC    cascade
>>     3:          1    XT-PIC-XT-PIC
>>     4:       4863    XT-PIC-XT-PIC    serial
>>     6:          2    XT-PIC-XT-PIC    floppy
>>     7:          5    XT-PIC-XT-PIC    ehci_hcd:usb1, uhci_hcd:usb3
>>     8:          0    XT-PIC-XT-PIC    rtc0
>>     9:          0    XT-PIC-XT-PIC    acpi
>>    10:    2334234    XT-PIC-XT-PIC    uhci_hcd:usb2, eth0, eth2
>>
>> [root@...10 ~]# cat /proc/interrupts |grep eth2
>>    10:   18388914    XT-PIC-XT-PIC    uhci_hcd:usb2, eth0, eth2
>> [root@...10 ~]# cat /proc/interrupts |grep eth2
>>    10:   18901627    XT-PIC-XT-PIC    uhci_hcd:usb2, eth0, eth2
>>
>> -- 
>>
>> "They that give up essential liberty to obtain temporary safety,
>> deserve neither liberty nor safety."  (Ben Franklin)
>>
>> "The course of history shows that as a government grows, liberty
>> decreases."  (Thomas Jefferson)
>>      
> I think drivers/net/tg3.c:4365 is at the line that reads
> "spin_lock(&tp->lock);" in tg3_tx_recover.  Can you verify?
>
>    


         tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &phy2);

in static void tg3_serdes_parallel_detect(struct tg3 *tp)

The driver version is:
#define DRV_MODULE_NAME        "tg3"
#define TG3_MAJ_NUM            3
#define TG3_MIN_NUM            115

-- 

"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty
decreases."  (Thomas Jefferson)



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