Messages in this thread | | | Date | Sun, 24 Jul 2011 08:17:14 -0400 | From | Christoph Hellwig <> | Subject | Re: BUG: unable to handle kernel paging request xfs_is_delayed_page |
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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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