X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Freiserfs%2Fdir.c;h=e6b03d2020c1c51aedbe6e443ccc7e236c50d242;hb=88bef5a4074e0568cf54df410f41065c06694d8a;hp=9c23fee3bae9b678d4d3cd6bbca538e07aa3599d;hpb=f4ebc993759dc25dc3db6b6f1a13a23df8264d4b;p=linux-2.6

diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c
index 9c23fee3ba..e6b03d2020 100644
--- a/fs/reiserfs/dir.c
+++ b/fs/reiserfs/dir.c
@@ -10,7 +10,7 @@
 #include <linux/buffer_head.h>
 #include <asm/uaccess.h>
 
-extern struct reiserfs_key MIN_KEY;
+extern const struct reiserfs_key MIN_KEY;
 
 static int reiserfs_readdir(struct file *, void *, filldir_t);
 static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
@@ -121,6 +121,16 @@ static int reiserfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 					continue;
 				d_reclen = entry_length(bh, ih, entry_num);
 				d_name = B_I_DEH_ENTRY_FILE_NAME(bh, ih, deh);
+
+				if (d_reclen <= 0 ||
+				    d_name + d_reclen > bh->b_data + bh->b_size) {
+					/* There is corrupted data in entry,
+					 * We'd better stop here */
+					pathrelse(&path_to_entry);
+					ret = -EIO;
+					goto out;
+				}
+
 				if (!d_name[d_reclen - 1])
 					d_reclen = strlen(d_name);