Re: INFO: task hung in tty_ldisc_hangup

[syzbot]

syzbot suspects this bug was fixed by commit:

commit e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2
Author: Jiri Slaby <jslaby@xxxxxxx>
Date:   Fri Feb 28 11:54:06 2020 +0000

    vt: selection, push sel_lock up

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=124970ade00000
start commit:   c6017471 Merge tag 'xfs-5.5-fixes-2' of git://git.kernel.o..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=7f6119e2e3675a73
dashboard link: https://syzkaller.appspot.com/bug?extid=3105793febc8f3e591ce
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=124fc6c1e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16cb16c1e00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: vt: selection, push sel_lock up

For information about bisection process see: https://goo.gl/tpsmEJ#bisection