From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: 3.0-rc3: WARNING: at fs/fs-writeback.c:356
 writeback_single_inode+0x3e/0x18f()
Date: Wed, 15 Jun 2011 14:42:56 +1000
Message-ID: <1308112976.2635.27.camel@pasglop>
References: <alpine.SOC.1.00.1106141213570.11764@math.ut.ee>
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Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-fsdevel@vger.kernel.org,
	Wu Fengguang <fengguang.wu@intel.com>,
	Christoph Hellwig <hch@infradead.org>
To: Meelis Roos <mroos@linux.ee>
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On Tue, 2011-06-14 at 12:15 +0300, Meelis Roos wrote:
> Tested 3.0-rc3 on my PC (2 PATA disks, single duron CPU). Got several of 
> these in dmesg:

Same here on a powerpc64 machine while doing a fresh debian install
(while the installer's installing the packages), -rc3 as well.

Cheers,
Ben.

> [  842.680141] ------------[ cut here ]------------
> [  842.680172] WARNING: at fs/fs-writeback.c:356 writeback_single_inode+0x3e/0x18f()
> [  842.680178] Hardware name:         
> [  842.680182] Modules linked in: mga ppdev lp ipv6 fuse loop snd_ens1371 gameport snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq sg sr_mod snd_timer snd_seq_device pcspkr evdev cdrom snd uhci_hcd ehci_hcd parport_pc rtc_cmos parport soundcore usbcore via686a snd_page_alloc ac97_bus hwmon i2c_viapro processor button
> [  842.680248] Pid: 1341, comm: flush-8:0 Not tainted 3.0.0-rc3 #67
> [  842.680254] Call Trace:
> [  842.680269]  [<c1254ada>] ? printk+0x18/0x1a
> [  842.680281]  [<c101fb6b>] warn_slowpath_common+0x77/0x8c
> [  842.680288]  [<c1092f8e>] ? writeback_single_inode+0x3e/0x18f
> [  842.680294]  [<c1092f8e>] ? writeback_single_inode+0x3e/0x18f
> [  842.680300]  [<c101fb9d>] warn_slowpath_null+0x1d/0x1f
> [  842.680306]  [<c1092f8e>] writeback_single_inode+0x3e/0x18f
> [  842.680313]  [<c1093519>] writeback_sb_inodes+0xcb/0x153
> [  842.680320]  [<c1093aba>] writeback_inodes_wb+0xb0/0xf1
> [  842.680326]  [<c1093c1d>] wb_writeback+0x122/0x1b0
> [  842.680334]  [<c1093d15>] wb_check_old_data_flush+0x6a/0x76
> [  842.680340]  [<c1093dc1>] wb_do_writeback+0xa0/0xf3
> [  842.680347]  [<c1093e53>] bdi_writeback_thread+0x3f/0xd7
> [  842.680354]  [<c1093e14>] ? wb_do_writeback+0xf3/0xf3
> [  842.680366]  [<c10328cc>] kthread+0x61/0x66
> [  842.680373]  [<c103286b>] ? kthread_worker_fn+0xf7/0xf7
> [  842.680383]  [<c125ce7e>] kernel_thread_helper+0x6/0xd
> [  842.680388] ---[ end trace c75e8a0e74c129b7 ]---
> 
>