[PATCH] Check block magic number so we scan only valid blocks.
hch at infradead.org
Wed Jul 7 18:52:18 CDT 2010
On Wed, Jul 07, 2010 at 11:09:11AM -0400, Peter Watkins wrote:
> Occasionally I've hit a SEGV while querying free space in xfs_db on a mounted
> file system. In scanfunc_bno, block->bb_numrecs has crazy values. And bb_magic
> is not XFS_ABTB_MAGIC.
> Does a check like this, similiar to other places, make sense?
Yes, it's reasonable. As long as you'd don't expect directly poking at
a life partition giving correct results..
> Should scanfunc_cnt make a similiar check?
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