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authorAndrew Morton <akpm@osdl.org>2006-10-11 01:21:46 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-11 11:14:21 -0700
commite5657933863f43cc6bb76a54d659303dafaa9e58 (patch)
tree7f6351194953b0d167ea79749d9fcaf9ae7f6a1f /drivers
parente0ab2928cc2202f13f0574d4c6f567f166d307eb (diff)
[PATCH] grow_buffers() infinite loop fix
If grow_buffers() is for some reason passed a block number which wants to lie outside the maximum-addressable pagecache range (PAGE_SIZE * 4G bytes) then it will accidentally truncate `index' and will then instnatiate a page at the wrong pagecache offset. This causes __getblk_slow() to go into an infinite loop. This can happen with corrupted disks, or with software errors elsewhere. Detect that, and handle it. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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