From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:34722 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751584AbeBWLLt (ORCPT ); Fri, 23 Feb 2018 06:11:49 -0500 Subject: Patch "net_sched: red: Avoid devision by zero" has been added to the 4.4-stable tree To: nogahf@mellanox.com, alexander.levin@microsoft.com, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Fri, 23 Feb 2018 12:01:51 +0100 Message-ID: <151938371147116@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 net_sched: red: Avoid devision by zero 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: net_sched-red-avoid-devision-by-zero.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 foo@baz Fri Feb 23 11:58:50 CET 2018 From: Nogah Frankel Date: Mon, 4 Dec 2017 13:31:10 +0200 Subject: net_sched: red: Avoid devision by zero From: Nogah Frankel [ Upstream commit 5c472203421ab4f928aa1ae9e1dbcfdd80324148 ] Do not allow delta value to be zero since it is used as a divisor. Fixes: 8af2a218de38 ("sch_red: Adaptative RED AQM") Signed-off-by: Nogah Frankel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- include/net/red.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/net/red.h +++ b/include/net/red.h @@ -178,7 +178,7 @@ static inline void red_set_parms(struct p->qth_max = qth_max << Wlog; p->Wlog = Wlog; p->Plog = Plog; - if (delta < 0) + if (delta <= 0) delta = 1; p->qth_delta = delta; if (!max_P) { Patches currently in stable-queue which might be from nogahf@mellanox.com are queue-4.4/net_sched-red-avoid-devision-by-zero.patch queue-4.4/net_sched-red-avoid-illegal-values.patch