Commit c394e458 authored by Anton Altaparmakov's avatar Anton Altaparmakov
Browse files

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: default avatarAnton Altaparmakov <>
parent 18efefa9
......@@ -309,7 +309,7 @@ typedef le16 MFT_RECORD_FLAGS;
* Note: The _LE versions will return a CPU endian formatted value!
#define MFT_REF_MASK_CPU 0x0000ffffffffffffULL
#define MFT_REF_MASK_LE const_cpu_to_le64(0x0000ffffffffffffULL)
#define MFT_REF_MASK_LE const_cpu_to_le64(MFT_REF_MASK_CPU)
typedef u64 MFT_REF;
typedef le64 leMFT_REF;
......@@ -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 >>
ofs = (ni->mft_no << vol->mft_record_size_bits) & ~PAGE_CACHE_MASK;
i_size = i_size_read(mft_vi);
* unistr.c - NTFS Unicode string handling. Part of the Linux-NTFS project.
* Copyright (c) 2001-2004 Anton Altaparmakov
* Copyright (c) 2001-2005 Anton Altaparmakov
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment