xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NTFS: Fix a 64-bitness bug where a left-shift could overflow a 32-bit variable

Browse Source 
which we now cast to 64-bit first (fs/ntfs/mft.c::map_mft_record_page().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov
2005-10-04 13:08:53 +01:00
parent 18efefa935
commit c394e458b6
3 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/ntfs/mft.c
View File

@@ -58,7 +58,8 @@ static inline MFT_RECORD *map_mft_record_page(ntfs_inode *ni)
* overflowing the unsigned long, but I don't think we would ever get
* here if the volume was that big...
*/
index = ni->mft_no << vol->mft_record_size_bits >> PAGE_CACHE_SHIFT;
index = (u64)ni->mft_no << vol->mft_record_size_bits >>
PAGE_CACHE_SHIFT;
ofs = (ni->mft_no << vol->mft_record_size_bits) & ~PAGE_CACHE_MASK;
i_size = i_size_read(mft_vi);