Commit 479ef592 authored by Oleg Drokin's avatar Oleg Drokin Committed by Linus Torvalds
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[PATCH] 32bit integer overflow in invalidate_inode_pages2() 



Fix a 32 bit integer overflow in invalidate_inode_pages2_range.

Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 02b70682

mm/truncate.c

+3 −3
Original line number Diff line number Diff line
@@ -282,8 +282,8 @@ int invalidate_inode_pages2_range(struct address_space *mapping, 
					 * Zap the rest of the file in one hit.

					 */

					unmap_mapping_range(mapping,

					    page_index << PAGE_CACHE_SHIFT,

					    (end - page_index + 1)

					   (loff_t)page_index<<PAGE_CACHE_SHIFT,

					   (loff_t)(end - page_index + 1)

							<< PAGE_CACHE_SHIFT,

					    0);

					did_range_unmap = 1;
@@ -292,7 +292,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping, 
					 * Just zap this page

					 */

					unmap_mapping_range(mapping,

					  page_index << PAGE_CACHE_SHIFT,

					  (loff_t)page_index<<PAGE_CACHE_SHIFT,

					  PAGE_CACHE_SIZE, 0);

				}

			}