linux-kernel - Re: WARNING: at kernel/sched.c:4131 schedule+0xa01/0xa20()

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Message-ID: <20101220132341.GA2533@zhy>
Date:	Mon, 20 Dec 2010 21:23:41 +0800
From:	Yong Zhang <yong.zhang0@...il.com>
To:	Marc Koschewski <marc@...nowledge.org>
Cc:	Linux-LKLM <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: at kernel/sched.c:4131 schedule+0xa01/0xa20()

On Mon, Dec 20, 2010 at 10:49:48AM +0100, Marc Koschewski wrote:
> The following popped up in my dmesg today:
> 
> [ 1512.587294] ------------[ cut here ]------------
> [ 1512.587309] WARNING: at kernel/sched.c:4131 schedule+0xa01/0xa20()

It's now suppressed by commit 050c6c9b896625d9fa498265be17b82c5fc65257
on -tip tree.

Thanks,
Yong

> [ 1512.587312] Hardware name: 43495KG
> [ 1512.587314] Modules linked in: sdhci mmc_core uhci_hcd ehci_hcd fuse snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss cdc_acm btusb bluetooth hdaps tp_smapi thinkpad_ec vboxnetadp vboxnetflt vboxdrv usb_storage usblp usbmon tun display cpufreq_userspace coretemp acpi_cpufreq mperf hed sbs sbshc fan qcserial usb_wwan uvcvideo videodev v4l1_compat usbserial iwlagn sr_mod cdrom snd_hda_codec_conexant iwlcore snd_hda_intel snd_hda_codec snd_hwdep mac80211 snd_pcm thinkpad_acpi snd_timer e1000e cfg80211 snd_page_alloc wmi i2c_i801 joydev intel_ips battery processor button ac thermal [last unloaded: mmc_core]
> [ 1512.587385] Pid: 6725, comm: kworker/1:2 Not tainted 2.6.37-rc6-dezzy-01908-g55ec86f #1
> [ 1512.587388] Call Trace:
> [ 1512.587395]  [<c13dc371>] ? printk+0x18/0x1f
> [ 1512.587405]  [<c103252d>] warn_slowpath_common+0x6d/0xa0
> [ 1512.587410]  [<c13dd061>] ? schedule+0xa01/0xa20
> [ 1512.587415]  [<c13dd061>] ? schedule+0xa01/0xa20
> [ 1512.587421]  [<c103257d>] warn_slowpath_null+0x1d/0x20
> [ 1512.587426]  [<c13dd061>] schedule+0xa01/0xa20
> [ 1512.587432]  [<c103d546>] ? lock_timer_base.clone.23+0x26/0x50
> [ 1512.587438]  [<c103d96d>] ? mod_timer+0xfd/0x1e0
> [ 1512.587445]  [<c104595b>] ? queue_delayed_work+0x1b/0x30
> [ 1512.587450]  [<c1045981>] ? schedule_delayed_work+0x11/0x20
> [ 1512.587455]  [<c1045f4a>] ? process_one_work+0x14a/0x2e0
> [ 1512.587460]  [<c103d96d>] ? mod_timer+0xfd/0x1e0
> [ 1512.587465]  [<c1044820>] ? wq_barrier_func+0x0/0x10
> [ 1512.587472]  [<c1097ad0>] ? vmstat_update+0x0/0x30
> [ 1512.587477]  [<c10467bf>] worker_thread+0x1df/0x2c0
> [ 1512.587482]  [<c10465e0>] ? worker_thread+0x0/0x2c0
> [ 1512.587487]  [<c104a3e4>] kthread+0x74/0x80
> [ 1512.587492]  [<c104a370>] ? kthread+0x0/0x80
> [ 1512.587497]  [<c10032b6>] kernel_thread_helper+0x6/0x10
> [ 1512.587501] ---[ end trace 14341092e363cd55 ]---
> 
> Regards,
> 	Marc
> 
> -- 
> Marc Koschewski
> --
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