linux-kernel - Re: list_add corruption in current Linus's tree?

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Date:	Wed, 24 Jun 2009 01:10:41 +0900
From:	Daisuke Nishimura <d-nishimura@....biglobe.ne.jp>
To:	Andrew Randrianasulu <randrik_a@...oo.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, akpm@...ux-foundation.org,
	kamezawa.hiroyu@...fujitsu.com, balbir@...ux.vnet.ibm.com,
	mingo@...e.hu, nishimura@....nes.nec.co.jp
Subject: Re: list_add corruption in current Linus's tree?

On Tue, 23 Jun 2009 08:48:04 -0700 (PDT)
Andrew Randrianasulu <randrik_a@...oo.com> wrote:

> 
> Hello!
> 
> I'm currently using vanilla kernel form kernel.org, up to commit d888a4c76c51092993643f8992bf55b3c28da483. Since yesterday i saw many warnings like this in dmesg:
> 
> ------------[ cut here ]------------
> WARNING: at lib/list_debug.c:26 __list_add+0x27/0x5c()
> Hardware name: MS-6380E
> list_add corruption. next->prev should be prev (cf801454), but was c22302fc. (next=c2282c28).
> Modules linked in: radeon ttm drm i2c_algo_bit cfbcopyarea cfbimgblt cfbfillrect sg snd_seq_dummy snd_seq_oss sd_mod snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss ipv6 nfsd lockd nfs_acl auth_rpcgss sunrpc usb_storage scsi_mod usb_libusual tuner_simple tuner_types ppdev tda9887 tda8290 snd_cs4236 snd_mpu401 snd_emu10k1 snd_via82xx snd_wavefront snd_ac97_codec snd_wss_lib ac97_bus snd_opl3_lib uhci_hcd saa7134 snd_mpu401_uart snd_pcm ir_common snd_rawmidi snd_timer snd_page_alloc ehci_hcd snd_util_mem videobuf_dma_sg snd_seq_device snd_hwdep videobuf_core snd parport_pc tveeprom usbcore rtc_cmos rtc_core emu10k1_gp ns558 soundcore parport floppy gameport rtc_lib shpchp 8139too pci_hotplug via_agp xfs exportfs ufs agpgart tuner v4l2_common videodev v4l1_compat w83627hf hwmon_vid hwmon i2c_viapro i2c_dev fbcon tileblit font bitblit softcursor fb
> Pid: 4000, comm: X Tainted: G        W  2.6.30-i486 #17
> Call Trace:
>  [<c1033bd6>] warn_slowpath_common+0x65/0x95
>  [<c1033c44>] warn_slowpath_fmt+0x29/0x2c
>  [<c1156ebf>] __list_add+0x27/0x5c
>  [<c10b9381>] mem_cgroup_add_lru_list+0x43/0x55
>  [<c10975b4>] add_page_to_lru_list+0x3d/0x42
>  [<c10978a1>] ____pagevec_lru_add+0xea/0x12c
>  [<c1097be4>] lru_add_drain+0x3c/0x86
>  [<c10a68a3>] unmap_region+0x34/0x10d
>  [<c10a7629>] do_munmap+0x1df/0x235
>  [<c10a76b4>] sys_munmap+0x35/0x44
>  [<c1002bc5>] syscall_call+0x7/0xb
> ---[ end trace fda7f44fa2651cfc ]---
> 
> but many, many more. Should i create bug in kernel bugzilla, or it is known  issue?
> 
It's a known issue.

I think Andrew has already queued the fix(http://lkml.org/lkml/2009/6/22/566).

Thank you for your report.

Daisuke Nishimura.

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