Re: [BUG arm-soc] mvneta: tx queue done sometimes causes kernelpanic

From: Thomas Petazzoni
Date: Fri Feb 15 2013 - 20:21:06 EST


On Fri, 15 Feb 2013 08:52:12 -0800, Eric Dumazet wrote:

> Driver is buggy, as TX completion can happen both from ndo_start_xmit()
> and a timer, and there is no spinlock or appropriate synchro.

Yes, it is a known issue. I did post a patch fixing the problem on
netdev@ a while ago [1], but while it was fixing the problem, it wasn't
considered the right approach. Being busy with other Marvell Armada
370/XP developments, I haven't yet had the time to investigate the
issue again.


Best regards,

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
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