mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-12-24 02:14:52 +01:00
122 lines
4.8 KiB
Text
122 lines
4.8 KiB
Text
|
From: =?ISO-8859-1?Q?Nicolas_de_Peslo=FCan?=
|
||
|
|
<nicolas.2p.debian@gmail.com>
|
||
|
|
Subject: Re: [PATCH] core: dev: don't call BUG() on bad input
|
||
|
|
Date: Mon, 14 Feb 2011 13:16:04 +0100
|
||
|
|
Lines: 54
|
||
|
|
Message-ID: <4D591D04.4050000@gmail.com>
|
||
|
|
References: <1297680967-11893-1-git-send-email-segoon@openwall.com>
|
||
|
|
Mime-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=ISO-8859-1;
|
||
|
|
format=flowed
|
||
|
|
Content-Transfer-Encoding: QUOTED-PRINTABLE
|
||
|
|
Cc: linux-kernel@vger.kernel.org,
|
||
|
|
"David S. Miller" <davem@davemloft.net>,
|
||
|
|
Eric Dumazet <eric.dumazet@gmail.com>,
|
||
|
|
Tom Herbert <therbert@google.com>,
|
||
|
|
Changli Gao <xiaosuo@gmail.com>,
|
||
|
|
Jesse Gross <jesse@nicira.com>, netdev@vger.kernel.org
|
||
|
|
To: Vasiliy Kulikov <segoon@openwall.com>
|
||
|
|
X-From: netdev-owner@vger.kernel.org Mon Feb 14 13:16:23 2011
|
||
|
|
Return-path: <netdev-owner@vger.kernel.org>
|
||
|
|
Envelope-to: linux-netdev-2@lo.gmane.org
|
||
|
|
Received: from vger.kernel.org ([209.132.180.67])
|
||
|
|
by lo.gmane.org with esmtp (Exim 4.69)
|
||
|
|
(envelope-from <netdev-owner@vger.kernel.org>)
|
||
|
|
id 1PoxLn-0007s8-Rx
|
||
|
|
for linux-netdev-2@lo.gmane.org; Mon, 14 Feb 2011 13:16:20 +0100
|
||
|
|
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
|
||
|
|
id S1753819Ab1BNMQQ convert rfc822-to-quoted-printable (ORCPT
|
||
|
|
<rfc822;linux-netdev-2@m.gmane.org>); Mon, 14 Feb 2011 07:16:16 -0500
|
||
|
|
Received: from mail-bw0-f46.google.com ([209.85.214.46]:53692 "EHLO
|
||
|
|
mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
|
||
|
|
with ESMTP id S1753690Ab1BNMQO (ORCPT
|
||
|
|
<rfc822;netdev@vger.kernel.org>); Mon, 14 Feb 2011 07:16:14 -0500
|
||
|
|
Received: by bwz15 with SMTP id 15so5395788bwz.19
|
||
|
|
for <multiple recipients>; Mon, 14 Feb 2011 04:16:13 -0800 (PST)
|
||
|
|
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
|
||
|
|
d=gmail.com; s=gamma;
|
||
|
|
h=domainkey-signature:message-id:date:from:user-agent:mime-version:to
|
||
|
|
:cc:subject:references:in-reply-to:content-type
|
||
|
|
:content-transfer-encoding;
|
||
|
|
bh=xx3YxuXgqhBANV8wzcWyUMECJelpRfdmoRSp1AKdYdc=;
|
||
|
|
b=N0KOUEiWNDJjbwFsNkzabK7eGUNcoUNkqBGVRMNJFQ1jIgKtMC9sXdcmSFkLf2G3W0
|
||
|
|
zzRsPc9T6wnstCSnGFjIStR1GQK4bQ7o7SC+bmV0UqsBQAMW8sdDkT20PMZlBl2X7PkF
|
||
|
|
a2TGrPtJKfEcGFXay9Xo1ZMu1aYODhlRfsZKo=
|
||
|
|
DomainKey-Signature: a=rsa-sha1; c=nofws;
|
||
|
|
d=gmail.com; s=gamma;
|
||
|
|
h=message-id:date:from:user-agent:mime-version:to:cc:subject
|
||
|
|
:references:in-reply-to:content-type:content-transfer-encoding;
|
||
|
|
b=vyCGwBn8dYUhOjmcV0am255nAUilQntfBxUI4yId3MocKlSBfEE0jJCJIVDySIAYOj
|
||
|
|
4g7FzXDeqZ5brwXgwA1derVfTXYvhKUC/60QA9/377l/PZ0vvRfqyPQcinMoOSCc+Kvv
|
||
|
|
vnBZtq/Kr+D4nUnefIwwjJ/dXS3dGjFBvis6w=
|
||
|
|
Received: by 10.204.98.65 with SMTP id p1mr25300616bkn.198.1297685772974;
|
||
|
|
Mon, 14 Feb 2011 04:16:12 -0800 (PST)
|
||
|
|
Received: from [192.168.0.101] (eab95-4-88-175-177-37.fbx.proxad.net [88.175.177.37])
|
||
|
|
by mx.google.com with ESMTPS id a17sm1733557bku.23.2011.02.14.04.16.07
|
||
|
|
(version=SSLv3 cipher=OTHER);
|
||
|
|
Mon, 14 Feb 2011 04:16:09 -0800 (PST)
|
||
|
|
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20101226 Icedove/3.0.11
|
||
|
|
In-Reply-To: <1297680967-11893-1-git-send-email-segoon@openwall.com>
|
||
|
|
Sender: netdev-owner@vger.kernel.org
|
||
|
|
Precedence: bulk
|
||
|
|
List-ID: <netdev.vger.kernel.org>
|
||
|
|
X-Mailing-List: netdev@vger.kernel.org
|
||
|
|
Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1099697>
|
||
|
|
|
||
|
|
Le 14/02/2011 11:56, Vasiliy Kulikov a =E9crit :
|
||
|
|
> alloc_netdev() may be called with too long name (more that IFNAMSIZ b=
|
||
|
|
ytes).
|
||
|
|
> Currently this leads to BUG(). Other insane inputs (bad txqs, rxqs) =
|
||
|
|
and
|
||
|
|
> even OOM don't lead to BUG(). Made alloc_netdev() return NULL, like =
|
||
|
|
on
|
||
|
|
> other errors.
|
||
|
|
>
|
||
|
|
> Signed-off-by: Vasiliy Kulikov<segoon@openwall.com>
|
||
|
|
> ---
|
||
|
|
> Compile tested.
|
||
|
|
>
|
||
|
|
> net/core/dev.c | 5 ++++-
|
||
|
|
> 1 files changed, 4 insertions(+), 1 deletions(-)
|
||
|
|
>
|
||
|
|
> diff --git a/net/core/dev.c b/net/core/dev.c
|
||
|
|
> index 6392ea0..12ef4b0 100644
|
||
|
|
> --- a/net/core/dev.c
|
||
|
|
> +++ b/net/core/dev.c
|
||
|
|
> @@ -5761,7 +5761,10 @@ struct net_device *alloc_netdev_mqs(int sizeof=
|
||
|
|
_priv, const char *name,
|
||
|
|
> size_t alloc_size;
|
||
|
|
> struct net_device *p;
|
||
|
|
>
|
||
|
|
> - BUG_ON(strlen(name)>=3D sizeof(dev->name));
|
||
|
|
> + if (strnlen(name, sizeof(dev->name))>=3D sizeof(dev->name)) {
|
||
|
|
|
||
|
|
"size_t strnlen(const char *s, size_t maxlen) : The strnlen() function =
|
||
|
|
returns strlen(s), if that is=20
|
||
|
|
less than maxlen, or maxlen if there is no '\0' character among the fir=
|
||
|
|
st maxlen characters pointed=20
|
||
|
|
to by s."
|
||
|
|
|
||
|
|
How can strnlen(name, sizeof(dev->name)) be greater than sizeof(dev->na=
|
||
|
|
me)?
|
||
|
|
|
||
|
|
Shouldn't it be "if (strnlen(name, sizeof(dev->name)) =3D=3D sizeof(dev=
|
||
|
|
->name))" instead?
|
||
|
|
|
||
|
|
Nicolas.
|
||
|
|
|
||
|
|
> + pr_err("alloc_netdev: Too long device name \n");
|
||
|
|
> + return NULL;
|
||
|
|
> + }
|
||
|
|
>
|
||
|
|
> if (txqs< 1) {
|
||
|
|
> pr_err("alloc_netdev: Unable to allocate device "
|
||
|
|
|
||
|
|
--
|
||
|
|
To unsubscribe from this list: send the line "unsubscribe netdev" in
|
||
|
|
the body of a message to majordomo@vger.kernel.org
|
||
|
|
More majordomo info at http://vger.kernel.org/majordomo-info.html
|
||
|
|
|
||
|
|
|
||
|
|
|