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| author | Anton Altaparmakov <aia21@cantab.net> | 2005-10-04 13:08:53 +0100 |
|---|---|---|
| committer | Anton Altaparmakov <aia21@cantab.net> | 2005-10-04 13:08:53 +0100 |
| commit | c394e458b69632902d65f9e2f39df79314f72908 (patch) | |
| tree | 562a5c51f5f87eeb98a39697d5b4c11e2c4c66e3 /fs/ntfs/mft.c | |
| parent | 18efefa9355119b4f6d9b73b074ebbf9882c37c3 (diff) | |
| download | linux-3.10-c394e458b69632902d65f9e2f39df79314f72908.tar.gz linux-3.10-c394e458b69632902d65f9e2f39df79314f72908.tar.bz2 linux-3.10-c394e458b69632902d65f9e2f39df79314f72908.zip | |
NTFS: Fix a 64-bitness bug where a left-shift could overflow a 32-bit variable
which we now cast to 64-bit first (fs/ntfs/mft.c::map_mft_record_page().
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Diffstat (limited to 'fs/ntfs/mft.c')
| -rw-r--r-- | fs/ntfs/mft.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c index 247586d1d5d..b011369b595 100644 --- a/fs/ntfs/mft.c +++ b/fs/ntfs/mft.c @@ -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); |