From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <n.anastop@gmail.com>
Received: from mail-yh0-f54.google.com (mail-yh0-f54.google.com
 [209.85.213.54]) by dpdk.org (Postfix) with ESMTP id C0F6458F8
 for <dev@dpdk.org>; Thu, 15 May 2014 16:24:47 +0200 (CEST)
Received: by mail-yh0-f54.google.com with SMTP id i57so3051523yha.41
 for <dev@dpdk.org>; Thu, 15 May 2014 07:24:55 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:date:message-id:subject:from:to:content-type;
 bh=rYXioHhkGQxmmdp4l896V+EsAHfets8O0dkrGrOcw08=;
 b=KMPp97EIb8eyKtgXA2etlUIAwlHcSUvj7AN6ypTLd+TrFkJyZdkmn9kniOMq3EJWDA
 RpPTwGxIctGaZzSiNnO5gfW7x1NNveA0RbfgfHPCTIx764k/IyPJ7ZuFBrBk6PZzX9QB
 Fkzc5vsEWbZdFXlRZTr2HuliXSyisQcFjwFMVKIJd8B6ekyPRy000yTOTIngIFjdvEAt
 4JVUxleKQyhIQVdJ01SA2ljeqDsWRLtP49II1rqBRQaj8pGuYLc+2YZmcP/vaapBpOjP
 gQVlTo6neDBqb7u7FrotLPMSpzyc0jc2Ctm1OPPjSIGH6s24M9oN9927WHQCQGBxf9YS
 fsoA==
MIME-Version: 1.0
X-Received: by 10.236.88.116 with SMTP id z80mr15839193yhe.112.1400163895384; 
 Thu, 15 May 2014 07:24:55 -0700 (PDT)
Received: by 10.170.64.146 with HTTP; Thu, 15 May 2014 07:24:55 -0700 (PDT)
Date: Thu, 15 May 2014 17:24:55 +0300
Message-ID: <CABYgoL-SS7aUcLWi4WbeSzOsuAgCfwzn0R=yhTXD5zMSWJUH9w@mail.gmail.com>
From: Nikos Anastopoulos <n.anastop@gmail.com>
To: dev@dpdk.org
Content-Type: text/plain; charset=UTF-8
Subject: [dpdk-dev] System hangs when using dpdk in a guest machine
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, 15 May 2014 14:24:48 -0000

Hi,

I am experiencing an irrecoverable system hang when trying to run the
'helloworld' dpdk example from within a CentOS 6.5 guest (4 VCPUS, 7GB
RAM), running on VirtualBox (Windows host).

Specifically, I have successfully built dpdk-1.6.0r2 for the
"x86_64-ivshmem-linuxapp-gcc" target.
I perform the following initialization actions without problem (all as root):
1. mkdir -p /dev/hugepages
2. mount -t hugetlbfs nodev /dev/hugepages
3. echo 0 > /proc/sys/kernel/randomize_va_space
4. modprobe uio
5. insmod $RTE_SDK/$RTE_TARGET/kmod/igb_uio.ko

Afterwards I launch the app as root as follows:
$ ./helloworld -c f -n 4

EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 1 on socket 0
EAL: Detected lcore 2 as core 2 on socket 0
EAL: Detected lcore 3 as core 3 on socket 0
EAL: Skip lcore 4 (not detected)
EAL: Skip lcore 5 (not detected)
EAL: Skip lcore 6 (not detected)
EAL: Skip lcore 7 (not detected)
EAL: Skip lcore 8 (not detected)
...
EAL: Skip lcore 62 (not detected)
EAL: Skip lcore 63 (not detected)
EAL: Searching for IVSHMEM devices...
EAL: No IVSHMEM configuration found!
EAL: Setting up memory...

The app freezes at this point, and after a while the guest OS freezes
as well, forcing me to power it off from the host (Virtualbox). After
a guest reboot I cannot find anything in the kernel logs related with
the hang.

Note also that the above steps have been validated, and the app has
successfully run, on a native CentOS 6.5 machine.

Any idea of what could be the cause for this behaviour?

Thanks in advance,
Nikos