From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id B3B50A09EF for ; Tue, 15 Dec 2020 10:08:40 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 89874C9CC; Tue, 15 Dec 2020 10:08:39 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by dpdk.org (Postfix) with ESMTP id 3B5E3C970 for ; Tue, 15 Dec 2020 10:08:36 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608023314; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=H7nkiZjkGKKv4k7dJpN0QHbdAvELCNx1hNNMQam+srE=; b=XTNayzsCJ09kZN2zVurz9Ipw4PO3mP0CAsFPLF8y9cEY5CBFfHHdOfWOagiOW4DPWp0g90 4huxC5HGcM7cawPFRJ14gW7KgkytFSVVA6DLv5gKZg/OAwhPtxqPSjT80PmtL/FqensUCV VcwLu6ALGZSRDzTFhC7xTeaegy20Kz8= Received: from mail-vs1-f69.google.com (mail-vs1-f69.google.com [209.85.217.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-384-qMiK2lqzMsKS-PdNW-4H_w-1; Tue, 15 Dec 2020 04:08:33 -0500 X-MC-Unique: qMiK2lqzMsKS-PdNW-4H_w-1 Received: by mail-vs1-f69.google.com with SMTP id x4so5054899vsq.16 for ; Tue, 15 Dec 2020 01:08:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=H7nkiZjkGKKv4k7dJpN0QHbdAvELCNx1hNNMQam+srE=; b=fQc7VsWSjj9Ul36EVXRbLReY6FCOh02cguNeKwoiw/zA3GvcnIkekzVTyMg6JkuSqX wkx2t5I7Oesd5MD53Kv51kpyL/Ui1GH6sYD5MC2Fo/BhMl6wL4VizBbor5Am49XDwIgb ltSQ7AEZzkgqjhsxWIwtPNnkYqWa9ovzpYUGKm3qzrpXa+FbDUo5gaj/jzAn9bHYnvpE L7TPsD73e/12EhbkUZwRl/fqzo5q8jmh22NRKpnx/FdUmZmmLppobF0BAYjKeHLkdXfH wYjRGdBsCWgoUBpmiHcyqn1RJEHnl54WyS0dkJLa09dvUJ9/+jR3JrrK+k8hvaekwWv9 57BQ== X-Gm-Message-State: AOAM533ybXWTgh+N3nlyzQWqRqVgb836FYgurRhXbqyC8mWp/s5T2X35 y4T5bvlvcJoX0hcDsJXWO7LizLeSIF3NaVn0tmkFZyyS39VEY9pILDxeYei7TxEiMTF+Es+nbwj G3I8gqO608C51Az3jgFAW8KI= X-Received: by 2002:a67:f80b:: with SMTP id l11mr26043191vso.27.1608023312738; Tue, 15 Dec 2020 01:08:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJznZ5NH5buDqSfAxTyYfj4VRWRzXVsB5SFCmo6jXTjbAuyp13T19l+/73iJnzzzZ81FXVahJssUe7pi4ukhkLs= X-Received: by 2002:a67:f80b:: with SMTP id l11mr26043183vso.27.1608023312521; Tue, 15 Dec 2020 01:08:32 -0800 (PST) MIME-Version: 1.0 References: <1607446804-160076-1-git-send-email-vladimir.medvedkin@intel.com> In-Reply-To: <1607446804-160076-1-git-send-email-vladimir.medvedkin@intel.com> From: David Marchand Date: Tue, 15 Dec 2020 10:08:21 +0100 Message-ID: To: Vladimir Medvedkin Cc: dev , dpdk stable Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dmarchan@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Subject: Re: [dpdk-stable] [PATCH] rib: fix undefined behavior X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" On Tue, Dec 8, 2020 at 6:00 PM Vladimir Medvedkin wrote: > > According to GCC documentation for __builtin_clz: > Returns the number of leading 0-bits in x, > starting at the most significant bit position. > If x is 0, the result is undefined. > __builtin_clz will be called with 0 if the existing > prefix address matches the one we want to insert. > > Fixes: 5a5793a5ffa2 ("rib: add RIB library") > Cc: stable@dpdk.org > > Reported-by: David Marchand > Signed-off-by: Vladimir Medvedkin Applied, thanks. -- David Marchand