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

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Date:	Tue, 16 Dec 2014 09:33:53 -0200
From:	Fabio Estevam <festevam@...il.com>
To:	Fugang Duan <b38611@...escale.com>
Cc:	"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>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [PATCH net-next 1/1] net: fec: Fix NAPI race

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 ?
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