netdev - Re: [PATCH net-next 1/1] net: fec: Fix NAPI race

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Message-ID: <20141216114131.GQ11285@n2100.arm.linux.org.uk>
Date:	Tue, 16 Dec 2014 11:41:31 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Fabio Estevam <festevam@...il.com>
Cc:	Fugang Duan <b38611@...escale.com>,
	"David S. Miller" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Estevam Fabio-R49496 <R49496@...escale.com>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Stephen Hemminger <stephen@...workplumber.org>,
	robert.daniels@...tagecontrols.com,
	Marek Vašut <marex@...x.de>
Subject: Re: [PATCH net-next 1/1] net: fec: Fix NAPI race

On Tue, Dec 16, 2014 at 09:33:53AM -0200, Fabio Estevam wrote:
> Hi Fugang,
> 
> On Tue, Dec 16, 2014 at 8:25 AM, Fugang Duan <b38611@...escale.com> wrote:
> > Do camera capture test on i.MX6q sabresd board, and save the capture data to
> > nfs rootfs. The command is:
> > gst-launch-1.0 -e imxv4l2src device=/dev/video1 num-buffers=2592000 ! tee name=t !
> > queue ! imxv4l2sink sync=false t. ! queue ! vpuenc ! queue ! mux. pulsesrc num-buffers=3720937
> > blocksize=4096 ! 'audio/x-raw, rate=44100, channels=2' ! queue ! imxmp3enc ! mpegaudioparse !
> > queue ! mux. qtmux name=mux ! filesink location=video_recording_long.mov
> >
> > After about 10 hours running, there have net watchdog timeout kernel dump:
> > ...
> > WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x2b4/0x2d8()
> > NETDEV WATCHDOG: eth0 (fec): transmit queue 0 timed out
> 
> Adding more people who reported similar issues in the past.
> 
> Marek,
> 
> Does this patch solve the problem you reported at
> http://www.spinics.net/lists/netdev/msg268167.html ?

My set of patches fixed stuff exactly like this...

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