autofs: remove ino free in autofs4_dir_symlink()

The inode allocation failure case in autofs4_dir_symlink() frees the
autofs dentry info of the dentry without setting ->d_fsdata to NULL.

That could lead to a double free so just get rid of the free and leave it
to ->d_release().

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ian Kent <[email protected]>
Cc: Tomohiro Kusumi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 623510e84c968c8e8cc2f34c23d1b897f75246b7..2eebeae75288da876736683d99de17508d4e97ef 100644 (file)
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -577,8 +577,6 @@ static int autofs4_dir_symlink(struct inode *dir,
        inode = autofs4_get_inode(dir->i_sb, S_IFLNK | 0555);
        if (!inode) {
                kfree(cp);
-               if (!dentry->d_fsdata)
-                       kfree(ino);
                return -ENOMEM;
        }
        inode->i_private = cp;