Re: [Bug #15704] [r8169] WARNING: at net/sched/sch_generic.c

Rafael J. Wysocki
2010-07-10T12:59:29Z

On Saturday, July 10, 2010, Sergey Senozhatsky wrote:
> On (07/10/10 02:33), Rafael J. Wysocki wrote:
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=15704
> > Subject : [r8169] WARNING: at net/sched/sch_generic.c
> > Submitter : Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> > Date : 2010-03-31 10:21 (101 days old)
> > Message-ID : <20100331102142.GA3294@swordfish.minsk.epam.com>
> > References : http://marc.info/?l=linux-kernel&m=127003090406108&w=2
> >
> >
>
> Hello,
>
> [ 3564.850086] pktgen 2.73: Packet Generator for packet performance testing.
> [ 3580.993027] ------------[ cut here ]------------
> [ 3580.993039] WARNING: at net/sched/sch_generic.c:258 dev_watchdog+0xc1/0x129()
> [ 3580.993043] Hardware name: F3JC
> [ 3580.993046] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
> [ 3580.993049] Modules linked in: pktgen ppp_async crc_ccitt ipv6 ppp_generic slhc usb_storage snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_hwdep snd_hda_codec_si3054 snd_pcm_oss snd_mixer_oss
> snd_hda_codec_realtek sdhci_pci sdhci mmc_core asus_laptop sparse_keymap led_class snd_hda_intel snd_hda_codec snd_pcm psmouse rng_core i2c_i801 snd_timer snd_page_alloc sg snd soundcore serio_raw evdev r8169 mii usbhid hid uhci_hcd
> ehci_hcd sr_mod usbcore cdrom sd_mod ata_piix
> [ 3580.993120] Pid: 0, comm: swapper Not tainted 2.6.35-rc4-dbg-git4-00247-g5bbf43d-dirty #72
> [ 3580.993124] Call Trace:
> [ 3580.993132] [<c102e3a6>] warn_slowpath_common+0x65/0x7a
> [ 3580.993137] [<c12694af>] ? dev_watchdog+0xc1/0x129
> [ 3580.993143] [<c102e41f>] warn_slowpath_fmt+0x26/0x2a
> [ 3580.993148] [<c12694af>] dev_watchdog+0xc1/0x129
> [ 3580.993155] [<c10370ab>] ? run_timer_softirq+0x136/0x22b
> [ 3580.993160] [<c1037104>] run_timer_softirq+0x18f/0x22b
> [ 3580.993165] [<c10370ab>] ? run_timer_softirq+0x136/0x22b
> [ 3580.993171] [<c12693ee>] ? dev_watchdog+0x0/0x129
> [ 3580.993177] [<c1032c2d>] __do_softirq+0x88/0x10c
> [ 3580.993183] [<c1032ce0>] do_softirq+0x2f/0x47
> [ 3580.993188] [<c1032f9d>] irq_exit+0x38/0x75
> [ 3580.993193] [<c10159b8>] smp_apic_timer_interrupt+0x5f/0x6d
> [ 3580.993200] [<c12c732a>] apic_timer_interrupt+0x36/0x3c
> [ 3580.993207] [<c104007b>] ? __kfifo_peek_n+0x1b/0x2b
> [ 3580.993213] [<c11dd5f6>] ? acpi_idle_enter_simple+0x117/0x14b
> [ 3580.993220] [<c12468e9>] cpuidle_idle_call+0x6a/0xa0
> [ 3580.993225] [<c100170d>] cpu_idle+0x89/0xbe
> [ 3580.993232] [<c12c1e6d>] start_secondary+0x1f4/0x1fb
> [ 3580.993237] ---[ end trace 0e0b0610391f3050 ]---
> [ 3581.009527] r8169 0000:02:00.0: eth0: link up

Thanks for the update, but I'm not really sure if r8169 is involved.
It seems that cpuidle is the source of the warning.

Rafael