ext4: fix an endianness bug in ext4_encrypted_follow_link()

applying le32_to_cpu() to 16bit value is a bad idea...

Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index abe2401ce405669f0d315319f5275a9fc321c697..e8e7af62ac95fc4e5268c32df1bc496a337202a7 100644 (file)
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -52,7 +52,7 @@ static const char *ext4_encrypted_follow_link(struct dentry *dentry, void **cook
        /* Symlink is encrypted */
        sd = (struct ext4_encrypted_symlink_data *)caddr;
        cstr.name = sd->encrypted_path;
-       cstr.len  = le32_to_cpu(sd->len);
+       cstr.len  = le16_to_cpu(sd->len);
        if ((cstr.len +
             sizeof(struct ext4_encrypted_symlink_data) - 1) >
            max_size) {