1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index e45326856680..7a32df594907 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1376,6 +1376,8 @@ static void do_tty_hangup(struct work_struct *work)
         read_unlock(&tasklist_lock);
 
         tty->flags = 0;
+        put_pid(tty->session);
+        put_pid(tty->pgrp);
         tty->session = NULL;
         tty->pgrp = NULL;
         tty->ctrl_status = 0;
@@ -3841,6 +3843,9 @@ static struct pid *__proc_set_tty(struct task_struct *tsk, struct tty_struct *tt
 {
         struct pid *old_pgrp;
         if (tty) {
+                /* We should not have a session or pgrp to here but.... */
+                put_pid(tty->session);
+                put_pid(tty->pgrp);
                 tty->session = get_pid(task_session(tsk));
                 tty->pgrp = get_pid(task_pgrp(tsk));
         }