leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

iomap: Add another assertion to inline data handling

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

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-08-04 20:07:34 -07:00 committed by Darrick J. Wong
parent ab069d5fdc
commit ae44f9c286
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/iomap/buffered-io.c
View File

@ -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;