From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <thomas.monjalon@6wind.com>
Received: from mail-wm0-f47.google.com (mail-wm0-f47.google.com [74.125.82.47])
 by dpdk.org (Postfix) with ESMTP id 1701329B6
 for <dev@dpdk.org>; Thu, 14 Apr 2016 16:43:53 +0200 (CEST)
Received: by mail-wm0-f47.google.com with SMTP id n3so129661949wmn.0
 for <dev@dpdk.org>; Thu, 14 Apr 2016 07:43:53 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=6wind-com.20150623.gappssmtp.com; s=20150623;
 h=from:to:cc:subject:date:message-id:organization:user-agent
 :in-reply-to:references:mime-version:content-transfer-encoding;
 bh=Oi6UC4Oon4yiasX0sLqWxwqzedz987RPjzvhw+oK++0=;
 b=xUtUZeUUVltbB9CSjiemxQ29c9SmQarKI8RpgCOkrndw25A6IMz4O/mOLgOJTXVSOk
 9zhqMvDpV+KvQDBdaC0tTMcWsXmSjhZ6VKB3f6SY56vrvmCiCAJD5ERW+gcVZJPIMynE
 YU2c/M7+i3XnUsi6YBEe+LmioXhFjBPpQ3Bnh0BM7cu5VMtTxIFg1ui7ptiF0N/9AkNl
 NS3VOiAZIYuiYrjCutcZZzaDdFS7xhqeCN1GI4k7OHvR4hW0SnJXyTs1WKyAzz2NDSA6
 CE3/I0YxuXFTdEC+EF0sti7irO4KkDw0sjhdHIMoSYu5NBRQyEUaNTBkQCnhJR6sfMiQ
 Fsow==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20130820;
 h=x-gm-message-state:from:to:cc:subject:date:message-id:organization
 :user-agent:in-reply-to:references:mime-version
 :content-transfer-encoding;
 bh=Oi6UC4Oon4yiasX0sLqWxwqzedz987RPjzvhw+oK++0=;
 b=O3mGhFN0vJHsE/gcWpuhwPSHPq50c15B+Xn5VeU5nWtCjmL61b1VNDv1lPcsO5eod+
 LjW+pR8cV/ZHQ55HarmddvYwj07mUHCbVPQaTU/IHQPJKpZF7wv6OmUuOF6ap8K+Mq7l
 j7y7NDwrEDuZnwYcySUG0IpKVv2tBa4RXrIHbS8itQKrkwfLoqKZHZJcd7ycAmi69DQV
 B0OKJb4lhCuix5DMGwTqCBDI4eQx4umqB/uq/uDtBk8QGsgIyAuWuTLq6SMCjCuL4JK3
 TiSkRKB17w7Rckjpc57BWQPK9D4zePl8X1hUf+5UnH0b4kM2cIZRHHZ0hUJArfoVsoX5
 q1MQ==
X-Gm-Message-State: AOPr4FWKmuqB4fqJXYQCFwJhBqrMeM6NRWWISFUt7BpN9Y+A5IEJTsybEkf+ddJXK5zZ2v46
X-Received: by 10.194.104.202 with SMTP id gg10mr17981367wjb.103.1460645032830; 
 Thu, 14 Apr 2016 07:43:52 -0700 (PDT)
Received: from xps13.localnet (245.111.75.86.rev.sfr.net. [86.75.111.245])
 by smtp.gmail.com with ESMTPSA id s6sm24744554wjy.31.2016.04.14.07.43.51
 (version=TLSv1/SSLv3 cipher=OTHER);
 Thu, 14 Apr 2016 07:43:52 -0700 (PDT)
From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dev@dpdk.org, ALeX Wang <ee07b291@gmail.com>
Date: Thu, 14 Apr 2016 16:43:50 +0200
Message-ID: <1933005.8eilLGqekQ@xps13>
Organization: 6WIND
User-Agent: KMail/4.14.10 (Linux/4.1.6-1-ARCH; KDE/4.14.11; x86_64; ; )
In-Reply-To: <570FA930.60105@intel.com>
References: <CANmyKO5bLFZA=o=K5wWdvKkzd_epy_2uriH8QqCdsMTFuuCEtg@mail.gmail.com>
 <CANmyKO7oUowb3Ubg8p26Spc68wEMfFuSBxOyauUG0jgophp_Gg@mail.gmail.com>
 <570FA930.60105@intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
Subject: Re: [dpdk-dev] [4.4 kernel] kni lockup, kernel dump
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Thu, 14 Apr 2016 14:43:53 -0000

2016-04-14 15:29, Ferruh Yigit:
> On 4/13/2016 11:26 PM, ALeX Wang wrote:
> > Did more experiment, found that it has nothing to do with the kernel
> > version,
> > 
> > It only happens when using kni module with '--no-huge' eal flag...
> > 
> > Is that expected?
> > 
> 
> Yes.
> KNI kernel module expects mempool is physically continuous, with
> '--no-huge' flag this is no more true, and as a result KNI module can
> access to incorrect address.

This is a bug.
The memory API should allow to explicit this restriction and return
an error if it cannot offer the requested continuous memory.
See this thread for discussion:
	http://dpdk.org/ml/archives/dev/2016-April/037444.html