| commit | ff4fcbdf43bc4ae760ef1e7782e233156ed90a75 | [log] [tgz] |
|---|---|---|
| author | Peter Hurley <peter@hurleysoftware.com> | Wed Nov 11 08:03:54 2015 -0500 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Dec 09 14:03:27 2015 -0500 |
| tree | 0f1ea82bf4026196484f9bc30a7bd072800c0368 | |
| parent | 8d0fe5721d2725e58429a9b54149a20f9f590451 [diff] |
tty: Fix tty_send_xchar() lock order inversion
commit ee0c1a65cf95230d5eb3d9de94fd2ead9a428c67 upstream.
The correct lock order is atomic_write_lock => termios_rwsem, as
established by tty_write() => n_tty_write().
Fixes: c274f6ef1c666 ("tty: Hold termios_rwsem for tcflow(TCIxxx)")
Reported-and-Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>