From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
linux-arm-kernel@lists.infradead.org,
"yrl.pp-manager.tt@hitachi.com" <yrl.pp-manager.tt@hitachi.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>
Subject: Re: [BUG arm-soc] mvneta: tx queue done sometimes causes kernel panic
Date: Sat, 16 Feb 2013 02:20:43 +0100 [thread overview]
Message-ID: <20130216022043.65d5c940@skate> (raw)
In-Reply-To: <1360947132.19353.15.camel@edumazet-glaptop>
Hello,
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.
[1] https://patchwork.kernel.org/patch/1941601/
Best regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2013-02-16 1:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-15 7:40 [BUG arm-soc] mvneta: tx queue done sometimes causes kernel panic Masami Hiramatsu
2013-02-15 16:52 ` Eric Dumazet
2013-02-16 1:20 ` Thomas Petazzoni [this message]
2013-02-18 14:34 ` Masami Hiramatsu
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