From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3759000-1519415705-2-11345802100234900349 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES unknown, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519415705; b=oUypBqk4BqwF67MM4StzIiQPSf5HRBxP7r9YkqvXb3kcwbk wx2Svns2MXVekPUXaArUFt6ztHFdAg3531YtpKTq64GyTyUjUvth28UGpvHqLTbx NYEo4KN6ziDQphFuYwvZaFH1WKy0Ib+qggJT6IPUqA/9ELx5Zx80HhnrjS6YUP3N e4/BLT7FqnvJ1UStD9ftAns/s2KHoZEresywnZbY2yP1nHvVhtL5iXwGoPP2NuxE qyM1LA/vrUp81glOnAdlX4Xhkw8HVo/Kt9/V3pvhi4r8LNAU8T7gCaO+mXC31t1R 1mREHlLrk2NUFCjL3ZtVpn1Ed7PJ+jhV1CpYKhg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1519415705; bh=PPPMMCtCH4D/Dd4Pzz+rw5PY5x KQsuynEpriLlxOdmw=; b=eULYg+8K7EU/6hSySzr4PHpDYYIXZt9m4b7zHKZzKX 7/R+OLJHzDamoGNM5TcaJnECZWCrWNVUIju4d62EtaHFJn7WE5v0oGT1G3HuWL4M cExDKMm67rYky4aMBETRz00fy78FNozm/R632NJX6zjFK81iA7G3J7vbO3tBdLC3 1MahlN7RcCfAPAOH/fFmtEBgO+k8ntINJ8TXrVs+FETnLa1n9xXbC9Q+nt6RFGxh 9Wl6apEK3h4qbX+f3DMGgbqfNEDaaGnygzLuvnDNcB8C4K79QV8hc6GOiFPnz2M2 MqXYxSAVUnoEReN8s4o/IaXZD3fND6ng6u54TSFPLzqA== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933060AbeBWSpG (ORCPT ); Fri, 23 Feb 2018 13:45:06 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:43208 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933683AbeBWSpE (ORCPT ); Fri, 23 Feb 2018 13:45:04 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nogah Frankel , "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 065/145] net_sched: red: Avoid devision by zero Date: Fri, 23 Feb 2018 19:26:11 +0100 Message-Id: <20180223170733.083856207@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180223170724.669759283@linuxfoundation.org> References: <20180223170724.669759283@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ 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) {