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xfs: fix acl count validation in xfs_acl_from_disk()
authorXi Wang <xi.wang@gmail.com>
Mon, 12 Dec 2011 21:55:52 +0000 (21:55 +0000)
committerBen Myers <bpm@sgi.com>
Fri, 16 Dec 2011 21:17:42 +0000 (15:17 -0600)
Commit fa8b18ed didn't prevent the integer overflow and possible
memory corruption.  "count" can go negative and bypass the check.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>

No differences found
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