From: Christoph Hellwig <hch@infradead.org>
To: T?r?k Edwin <edwintorok@gmail.com>
Cc: xfs-masters@oss.sgi.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
xfs@oss.sgi.com
Subject: Re: BUG: unable to handle kernel paging request xfs_is_delayed_page
Date: Sun, 24 Jul 2011 08:17:14 -0400 [thread overview]
Message-ID: <20110724121714.GA22065@infradead.org> (raw)
In-Reply-To: <4E289228.4000208@gmail.com>
On Thu, Jul 21, 2011 at 11:55:04PM +0300, T?r?k Edwin wrote:
> Not sure what the BUG means: did XFS ran out of memory when trying to write the 4GB coredump, as it wanted to allocate an extra 4G temporarely to hold it?
>
It means we dereferenced an invalid pointer in xfs_is_delayed_page,
which is called from the writeback code, which is pretty odd. We
haven't really touched that particular piece of code for a long time,
and it really doesn't derefence many pointers, basically just
page->mapping, page->private and the flags and b_this_page fields
in the buffer head.
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prev parent reply other threads:[~2011-07-24 12:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-21 20:55 BUG: unable to handle kernel paging request xfs_is_delayed_page Török Edwin
2011-07-24 7:14 ` Maciej Rutecki
2011-07-24 11:06 ` Török Edwin
2011-07-24 18:55 ` Maciej Rutecki
2011-07-25 15:33 ` Paul E. McKenney
2011-07-24 12:17 ` Christoph Hellwig [this message]
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