Hi there.
We have a machine here which can trig the following warning if we
remove its network module (sis900) and let ifplugd reload it:
"""
WARNING: at net/sched/sch_generic.c:222 dev_watchdog+0xfa/0x120()
Modules linked in: sis900 ip_set fuse af_packet snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss ipv6 binfmt_misc loop dm_mod floppy cpufreq_ondemand cpufreq_conservative cpufreq_powersave p4_clockmod speedstep_lib freq_table ns558 gameport parport_pc parport rtc_cmos button thermal processor snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd soundcore sr_mod snd_page_alloc sis_agp agpgart i2c_sis96x i2c_core mii shpchp pci_hotplug evdev sg ide_generic sis5513 ide_core pata_sis libata dock sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd
usbcore [last unloaded: sis900]
Pid: 0, comm: swapper Not tainted 2.6.26-desktop-0.rc6.1mnb #1
[<c012da14>] warn_on_slowpath+0x54/0xa0
[<c012e146>] ? wake_up_klogd+0x36/0x40
[<c012439b>] ? default_wake_function+0xb/0x10
[<c014252b>] ? autoremove_wake_function+0x1b/0x50
[<de841965>] ? sis900_tx_timeout+0x125/0x180 [sis900]
[<c02f2a3a>] dev_watchdog+0xfa/0x120
[<c013768b>] run_timer_softirq+0x12b/0x1f0
[<c02f2940>] ? dev_watchdog+0x0/0x120
[<c02f2940>] ? dev_watchdog+0x0/0x120
[<c01332e2>] __do_softirq+0x92/0x120
[<c01333cd>] do_softirq+0x5d/0x60
[<c0133565>] irq_exit+0x75/0xa0
[<c0115508>] smp_apic_timer_interrupt+0x58/0x90
[<c010a640>] ? mwait_idle+0x0/0x50
[<c0104968>] apic_timer_interrupt+0x28/0x30
[<c010a640>] ? mwait_idle+0x0/0x50
[<c010a672>] ? mwait_idle+0x32/0x50
[<c0102d6b>] cpu_idle+0x6b/0xf0
[<c035df89>] start_secondary+0x16c/0x1e3
=======================
---[ end trace 756c1e519796d652 ]---
"""
Doesn't seem serious though, the card still works.
Despite the kernel name, it's a vanilla 2.6.26-rc6-git3 kernel.
--
Luiz Fernando N. Capitulino