From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47308 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754913AbcDJAlE (ORCPT ); Sat, 9 Apr 2016 20:41:04 -0400 Subject: Patch "tty: Fix GPF in flush_to_ldisc(), part 2" has been added to the 4.4-stable tree To: peter@hurleysoftware.com, gregkh@linuxfoundation.org Cc: , From: Date: Sat, 09 Apr 2016 17:41:00 -0700 Message-ID: <14602488608545@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled tty: Fix GPF in flush_to_ldisc(), part 2 to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: tty-fix-gpf-in-flush_to_ldisc-part-2.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From f33798deecbd59a2955f40ac0ae2bc7dff54c069 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sun, 10 Jan 2016 20:36:12 -0800 Subject: tty: Fix GPF in flush_to_ldisc(), part 2 From: Peter Hurley commit f33798deecbd59a2955f40ac0ae2bc7dff54c069 upstream. commit 9ce119f318ba ("tty: Fix GPF in flush_to_ldisc()") fixed a GPF caused by a line discipline which does not define a receive_buf() method. However, the vt driver (and speakup driver also) pushes selection data directly to the line discipline receive_buf() method via tty_ldisc_receive_buf(). Fix the same problem in tty_ldisc_receive_buf(). Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -594,7 +594,7 @@ static inline int tty_ldisc_receive_buf( count = ld->ops->receive_buf2(ld->tty, p, f, count); else { count = min_t(int, count, ld->tty->receive_room); - if (count) + if (count && ld->ops->receive_buf) ld->ops->receive_buf(ld->tty, p, f, count); } return count; Patches currently in stable-queue which might be from peter@hurleysoftware.com are queue-4.4/tty-fix-gpf-in-flush_to_ldisc-part-2.patch queue-4.4/8250-use-callbacks-to-access-uart_dll-uart_dlm.patch queue-4.4/net-irda-fix-use-after-free-in-irtty_open.patch