svn commit: r298725 - stable/10/sys/fs/ext2fs

[Pedro F. Giffuni]

Author: pfg
Date: Thu Apr 28 01:05:40 2016
New Revision: 298725
URL: https://svnweb.freebsd.org/changeset/base/298725

Log:
  MFC r298518:
  ext2_htree_release(): prevent signed integer overflow in a loop.
  
  h_levels_num, as most data structs in ext2fs, is unsigned so
  the index that addresses it has to be unsigned as well.
  
  To get to overflow here we would probably be considering a
  degenerate case though.
  
  MFC after:	5 days

Modified:
  stable/10/sys/fs/ext2fs/ext2_htree.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/fs/ext2fs/ext2_htree.c
==============================================================================
--- stable/10/sys/fs/ext2fs/ext2_htree.c	Wed Apr 27 23:04:42 2016	(r298724)
+++ stable/10/sys/fs/ext2fs/ext2_htree.c	Thu Apr 28 01:05:40 2016	(r298725)
@@ -191,7 +191,7 @@ ext2_htree_set_limit(struct ext2fs_htree
 static void
 ext2_htree_release(struct ext2fs_htree_lookup_info *info)
 {
-	int i;
+	u_int i;
 
 	for (i = 0; i < info->h_levels_num; i++) {
 		struct buf *bp = info->h_levels[i].h_bp;