OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

NTFS: Fix a potential overflow by casting (index + 1) to s64 before doing a 

left shift using PAGE_CACHE_SHIFT in fs/ntfs/file.c.  Thanks to Andrew
      Morton pointing this out to.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov 2005-11-24 13:41:33 +00:00
parent 33bc227e4e
commit 3c6af7fa78
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ntfs/file.c
View File

@ -248,7 +248,7 @@ do_non_resident_extend:
* enough to make ntfs_writepage() work.
*/
write_lock_irqsave(&ni->size_lock, flags);
ni->initialized_size = (index + 1) << PAGE_CACHE_SHIFT;
ni->initialized_size = (s64)(index + 1) << PAGE_CACHE_SHIFT;
if (ni->initialized_size > new_init_size)
ni->initialized_size = new_init_size;
write_unlock_irqrestore(&ni->size_lock, flags);