tree de3a6332fd92f6a8992440467988f6844bd270c9
parent 36f90b0a2ddd60823fe193a85e60ff1906c2a9b3
author Peter Hurley <peter@hurleysoftware.com> 1454698176 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1454806606 -0800

tty: Drop krefs for interrupted tty lock

When the tty lock is interrupted on attempted re-open, 2 tty krefs
are still held. Drop extra kref before returning failure from
tty_lock_interruptible(), and drop lookup kref before returning
failure from tty_open().

Fixes: 0bfd464d3fdd ("tty: Wait interruptibly for tty lock on reopen")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>