Commit ae44f9c2 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Darrick J. Wong
Browse files

iomap: Add another assertion to inline data handling 



Check that the file tail does not cross a page boundary.  Requested by
Andreas.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
Signed-off-by: default avatarDarrick J. Wong <djwong@kernel.org>
parent ab069d5f

fs/iomap/buffered-io.c

+2 −0
Original line number Diff line number Diff line
@@ -215,6 +215,8 @@ static int iomap_read_inline_data(struct inode *inode, struct page *page, 
	if (PageUptodate(page))

		return PAGE_SIZE - poff;



	if (WARN_ON_ONCE(size > PAGE_SIZE - poff))

		return -EIO;

	if (WARN_ON_ONCE(size > PAGE_SIZE -

			 offset_in_page(iomap->inline_data)))

		return -EIO;