possible memory corruption in cifs_parse_mount_options()

error path after mountdata check frees uninitialized mountdata_copy

Signed-off-by: Vasily Averin <vvs@sw.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 84c730701c099fc5fc7958c5a184d057ac2ad040..fb31c2c1bb1779d9891c446bc7d0bb94fe22fdd4 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -784,7 +784,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
                         struct smb_vol *vol)
 {
        char *value, *data, *end;
-       char *mountdata_copy, *options;
+       char *mountdata_copy = NULL, *options;
        unsigned int  temp_len, i, j;
        char separator[2];
        short int override_uid = -1;