Squashfs: Fix sanity check patches on big-endian systems

le64 values should be swapped when accessing on
big-endian systems.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>

fs/squashfs/export.c

@@ -147,7 +147,7 @@ __le64 *squashfs_read_inode_lookup_table(struct super_block *sb,
 	 * table[0] points to the first inode lookup table metadata block,
 	 * this should be less than lookup_table_start
 	 */
-	if (!IS_ERR(table) && table[0] >= lookup_table_start) {
+	if (!IS_ERR(table) && le64_to_cpu(table[0]) >= lookup_table_start) {
 		kfree(table);
 		return ERR_PTR(-EINVAL);
 	}

fs/squashfs/fragment.c

@@ -90,7 +90,7 @@ __le64 *squashfs_read_fragment_index_table(struct super_block *sb,
 	 * table[0] points to the first fragment table metadata block, this
 	 * should be less than fragment_table_start
 	 */
-	if (!IS_ERR(table) && table[0] >= fragment_table_start) {
+	if (!IS_ERR(table) && le64_to_cpu(table[0]) >= fragment_table_start) {
 		kfree(table);
 		return ERR_PTR(-EINVAL);
 	}

fs/squashfs/id.c

@@ -93,7 +93,7 @@ __le64 *squashfs_read_id_index_table(struct super_block *sb,
 	 * table[0] points to the first id lookup table metadata block, this
 	 * should be less than id_table_start
 	 */
-	if (!IS_ERR(table) && table[0] >= id_table_start) {
+	if (!IS_ERR(table) && le64_to_cpu(table[0]) >= id_table_start) {
 		kfree(table);
 		return ERR_PTR(-EINVAL);
 	}

fs/squashfs/super.c

@@ -245,7 +245,7 @@ allocate_id_index_table:
 		msblk->id_table = NULL;
 		goto failed_mount;
 	}
-	next_table = msblk->id_table[0];
+	next_table = le64_to_cpu(msblk->id_table[0]);
 
 	/* Handle inode lookup table */
 	lookup_table_start = le64_to_cpu(sblk->lookup_table_start);
@@ -261,7 +261,7 @@ allocate_id_index_table:
 		msblk->inode_lookup_table = NULL;
 		goto failed_mount;
 	}
-	next_table = msblk->inode_lookup_table[0];
+	next_table = le64_to_cpu(msblk->inode_lookup_table[0]);
 
 	sb->s_export_op = &squashfs_export_ops;
 
@@ -286,7 +286,7 @@ handle_fragments:
 		msblk->fragment_index = NULL;
 		goto failed_mount;
 	}
-	next_table = msblk->fragment_index[0];
+	next_table = le64_to_cpu(msblk->fragment_index[0]);
 
 check_directory_table:
 	/* Sanity check directory_table */