linux-kernel - Re: XFS kernel BUG at fs/buffer.c:470! with 2.6.28.4

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Date:	Sun, 08 Feb 2009 20:53:54 -0600
From:	Eric Sandeen <sandeen@...deen.net>
To:	Alessandro Bono <alessandro.bono@...il.com>
CC:	Christoph Hellwig <hch@...radead.org>,
	linux-xfs <linux-xfs@....sgi.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: XFS kernel BUG at fs/buffer.c:470! with 2.6.28.4

Eric Sandeen wrote:
> Alessandro Bono wrote:

..

>> sure, attached
> 
> Well, that seems to not be from the kernel you were running; there is no
> BUG() on line 470:
> 
> $ cat -n buffer.c | grep -8 "   470"
>    462				       bdevname(bh->b_bdev, b));
>    463			}
>    464			set_bit(AS_EIO, &page->mapping->flags);
>    465			set_buffer_write_io_error(bh);
>    466			clear_buffer_uptodate(bh);
>    467			SetPageError(page);
>    468		}
>    469	
>    470		first = page_buffers(page);

oh, oops :)  it's probably this BUG():

#define page_buffers(page)                                      \
        ({                                                      \
                BUG_ON(!PagePrivate(page));                     \


-Eric
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