netdev - Re: Regression in virtio_net causing kernel BUG when running under VirtualBox (bisected)

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Message-ID: <1269886341.13277.6.camel@localhost.localdomain>
Date:	Mon, 29 Mar 2010 11:12:21 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	Thomas Müller <thomas@...htm.de>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Regression in virtio_net causing kernel BUG when running under
 VirtualBox (bisected)

Hello Thomas,

Good catch! The problem was sg_init_table was missing for small buffer
size. When CONFIG_DEBUG_SG is off, you won't hit this, but your test has
DEBUG_SG on so SG_MAGIC check failed. You can turn DEBUG_SG off to avoid
this.

I thought you should hit the same problem before since I didn't remember
sg_init_table was used for small message size.

I will submit a patch for fix this issue soon.

Thanks
Shirley

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