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path: root/fs/ntfs3/super.c
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Diffstat (limited to 'fs/ntfs3/super.c')
-rw-r--r--fs/ntfs3/super.c26
1 files changed, 20 insertions, 6 deletions
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index ea4e218c3f75..f78c67452b2a 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -899,9 +899,17 @@ check_boot:
goto out;
}
- sbi->record_size = record_size =
- boot->record_size < 0 ? 1 << (-boot->record_size) :
- (u32)boot->record_size << cluster_bits;
+ if (boot->record_size >= 0) {
+ record_size = (u32)boot->record_size << cluster_bits;
+ } else if (-boot->record_size <= MAXIMUM_SHIFT_BYTES_PER_MFT) {
+ record_size = 1u << (-boot->record_size);
+ } else {
+ ntfs_err(sb, "%s: invalid record size %d.", hint,
+ boot->record_size);
+ goto out;
+ }
+
+ sbi->record_size = record_size;
sbi->record_bits = blksize_bits(record_size);
sbi->attr_size_tr = (5 * record_size >> 4); // ~320 bytes
@@ -918,9 +926,15 @@ check_boot:
goto out;
}
- sbi->index_size = boot->index_size < 0 ?
- 1u << (-boot->index_size) :
- (u32)boot->index_size << cluster_bits;
+ if (boot->index_size >= 0) {
+ sbi->index_size = (u32)boot->index_size << cluster_bits;
+ } else if (-boot->index_size <= MAXIMUM_SHIFT_BYTES_PER_INDEX) {
+ sbi->index_size = 1u << (-boot->index_size);
+ } else {
+ ntfs_err(sb, "%s: invalid index size %d.", hint,
+ boot->index_size);
+ goto out;
+ }
/* Check index record size. */
if (sbi->index_size < SECTOR_SIZE || !is_power_of_2(sbi->index_size)) {