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authorPavel Shilovsky <piastryyy@gmail.com>2011-08-21 19:30:15 +0400
committerSteve French <sfrench@us.ibm.com>2011-09-20 06:15:03 +0400
commit5b980b01212199833ee8023770fa4cbf1b85e9f4 (patch)
tree71a184539229d6067185a3b57bebb6e422a7c48f /fs
parent9438fabb73eb48055b58b89fc51e0bc4db22fabd (diff)
downloadlinux-5b980b01212199833ee8023770fa4cbf1b85e9f4.tar.xz
CIFS: Fix ERR_PTR dereference in cifs_get_root
move it to the beginning of the loop. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/cifsfs.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index f93eb948d071..54b8f1e7da94 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -548,6 +548,12 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
struct inode *dir = dentry->d_inode;
struct dentry *child;
+ if (!dir) {
+ dput(dentry);
+ dentry = ERR_PTR(-ENOENT);
+ break;
+ }
+
/* skip separators */
while (*s == sep)
s++;
@@ -563,10 +569,6 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
mutex_unlock(&dir->i_mutex);
dput(dentry);
dentry = child;
- if (!dentry->d_inode) {
- dput(dentry);
- dentry = ERR_PTR(-ENOENT);
- }
} while (!IS_ERR(dentry));
_FreeXid(xid);
kfree(full_path);