| commit | 8bcd4e6a8decac251d55c4377e2e67f052777ce0 | [log] [tgz] |
|---|---|---|
| author | Johan Hovold <johan@kernel.org> | Fri Nov 03 15:30:55 2017 +0100 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Tue Nov 28 16:00:50 2017 +0100 |
| tree | e9ecd5cb20a5a37a2f255d8d51622be7eec2b5de | |
| parent | fd00cf81a9a84776ba58e56bd042c726dcf75cf3 [diff] |
serdev: ttyport: fix NULL-deref on hangup
Make sure to use a properly refcounted tty_struct in write_wake up to
avoid dereferencing a NULL-pointer when a port is being hung up.
Fixes: bed35c6dfa6a ("serdev: add a tty port controller driver")
Cc: stable <stable@vger.kernel.org> # 4.11
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>