Fix it by revert hulk patch and backport patch from mainline.
Yi Yang (2): Revert "tty: fix pid memleak in disassociate_ctty()" tty: tty_jobctrl: fix pid memleak in disassociate_ctty()
drivers/tty/tty_jobctrl.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-)