The first two fixes are worth to have in stables as we've hit it on v4.9 stable.
And for linux-next - adding lockdep asserts for line discipline changing code, verifying that write ldisc sem will be held forthwith. Changes since v1: - Added tested-by/reported-by tags - Dropped 3/4 (locking tty pair for lockdep sake), Because of that - not adding lockdep_assert_held() in tty_ldisc_open() - Added 4/4 cleanup to inc tty->count only on success of tty_ldisc_reinit() - lock ldisc without (5*HZ) timeout in tty_reopen() v1 link: lkml.kernel.org/r/<[email protected]> Huuge cc list: Cc: Daniel Axtens <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Michael Neuling <[email protected]> Cc: Mikulas Patocka <[email protected]> Cc: Nathan March <[email protected]> Cc: Pasi Kärkkäinen <[email protected]> Cc: Peter Hurley <[email protected]> Cc: Sergey Senozhatsky <[email protected]> Cc: Tan Xiaojun <[email protected]> Cc: Tetsuo Handa <[email protected]> (please, ignore if I Cc'ed you mistakenly) Dmitry Safonov (4): tty: Drop tty->count on tty_reopen() failure tty: Hold tty_ldisc_lock() during tty_reopen() tty/lockdep: Add ldisc_sem asserts tty: Simplify tty->count math in tty_reopen() drivers/tty/tty_io.c | 12 ++++++++---- drivers/tty/tty_ldisc.c | 5 +++++ 2 files changed, 13 insertions(+), 4 deletions(-) -- 2.13.6
