Am 30.05.2011 04:34, schrieb Eric Dumazet:

Le dimanche 29 mai 2011 à 15:45 -0700, Andrew Morton a écrit :

quoted

(cc netdev)

On Sun, 29 May 2011 07:56:35 +0200 Robert Goldner [off-list ref] wrote:

quoted

quoted

Hi,

sometimes I got an Ooops while the system is starting:

[   15.824365] ------------[ cut here ]------------
[   15.824616] WARNING: at net/sched/sch_generic.c:256
dev_watchdog+0x1d6/0x1e0()
[   15.824868] Hardware name:
[   15.825098] NETDEV WATCHDOG: eth0 (sis900): transmit queue 0 timed out
[   15.825333] Modules linked in: coretemp qt1010 af9013 dvb_pll mt2060
dvb_usb_nova_t_usb2 dvb_usb_dibusb_common dib3000mc psmouse
dibx000_common pcspkr dvb_usb_af9015 ohci_hcd
[   15.829066] Pid: 1462, comm: startpar Not tainted 2.6.39-agathe #2
[   15.829301] Call Trace:
[   15.829534]  [<c103c79d>] warn_slowpath_common+0x6d/0xa0
[   15.829948]  [<c13ff216>] ? dev_watchdog+0x1d6/0x1e0
[   15.830183]  [<c13ff216>] ? dev_watchdog+0x1d6/0x1e0
[   15.830417]  [<c103c84e>] warn_slowpath_fmt+0x2e/0x30
[   15.830828]  [<c13ff216>] dev_watchdog+0x1d6/0x1e0
[   15.831241]  [<c104ecc8>] ? __queue_work+0xb8/0x300
[   15.831476]  [<c10048a8>] ? handle_irq+0x18/0x90
[   15.831889]  [<c1041bc7>] ? irq_exit+0x37/0x80
[   15.832127]  [<c10044f6>] ? do_IRQ+0x46/0xb0
[   15.832541]  [<c1080189>] ? rcu_start_gp+0x149/0x1d0
[   15.832954]  [<c1046a24>] run_timer_softirq+0xe4/0x200
[   15.833189]  [<c1041900>] ? local_bh_enable+0x80/0x80
[   15.833426]  [<c151ade9>] ? common_interrupt+0x29/0x30
[   15.833838]  [<c13ff040>] ? qdisc_reset+0x40/0x40
[   15.834250]  [<c1041978>] __do_softirq+0x78/0x100
[   15.834841]  [<c1041900>] ? local_bh_enable+0x80/0x80
[   15.835097]  <IRQ>  [<c1041bfe>] ? irq_exit+0x6e/0x80
[   15.835188]  [<c1019dc6>] ? smp_apic_timer_interrupt+0x56/0x90
[   15.835247]  [<c151a46a>] ? apic_timer_interrupt+0x2a/0x30
[   15.835305]  [<c151a168>] ? resume_userspace+0x14/0x14
[   15.835360] ---[ end trace 519c5412e162986a ]---


The level of pain is very low, because the system is still running very
well.

If somebody needs some more information, please let me know.

Which net device driver is being used?

Seems to be sis900

Maybe its TX_TIMEOUT is too low.

Robert, is your NIC in full or half duplex mode ?

Hello Eric,

the device runs in full duplex mode (as far as I see)

root@agathe:~# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Link partner advertised link modes:10baseT/Half 10baseT/Full
                                           100baseT/Half 100baseT/Full
        Link partner advertised pause frame use: Symmetric
        Link partner advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 1
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: pg
        Wake-on: g
        Current message level: 0x000000c5 (197)
        Link detected: yes


Yes, it's an sis900, lspci:

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 662 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port
(virtual PCI-to-PCI bridge)
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS964 [MuTIOL
Media IO] (rev 36)
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS]
AC'97 Sound Controller (rev a0)
00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1
Controller (rev 0f)
00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1
Controller (rev 0f)
00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.1
Controller (rev 0f)
00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI
Fast Ethernet (rev 91)
00:05.0 IDE interface: Silicon Integrated Systems [SiS] SATA (rev 01)
00:1f.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS]
661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter (rev 04)