Subject: Re: panic in tg3 driver

From: "Matt Carlson" <[email-masked]>
Date: Mon, 10 Jan 2011 11:22:16 -0800

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@Z1010 ~]# modprobe tg3
> > [root@Z1010 ~]# 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@Z1010 ~]# 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@Z1010 ~]# cat /proc/interrupts |grep eth2
>   10:   18388914    XT-PIC-XT-PIC    uhci_hcd:usb2, eth0, eth2
> [root@Z1010 ~]# 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?