From mboxrd@z Thu Jan 1 00:00:00 1970 From: w@1wt.eu (Willy Tarreau) Date: Mon, 16 Sep 2013 18:44:12 +0200 Subject: mvneta: oops in __rcu_read_lock on mirabox In-Reply-To: <20130916163937.GC3188@1wt.eu> References: <20130915205701.5c61a444@skate> <20130916065047.GH27487@1wt.eu> <20130916175152.4e013457@skate> <20130916163937.GC3188@1wt.eu> Message-ID: <20130916164412.GD3188@1wt.eu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Sep 16, 2013 at 06:39:37PM +0200, Willy Tarreau wrote: > On Mon, Sep 16, 2013 at 09:35:16AM -0700, Ethan Tuttle wrote: > > On Mon, Sep 16, 2013 at 8:51 AM, Thomas Petazzoni > > wrote: > > > Willy, Ethan, > > > > > > On Mon, 16 Sep 2013 08:50:47 +0200, Willy Tarreau wrote: > > > > > >> I'm currently testing on 3.11.1 (which I had here) and am not getting > > >> any issue after 50M packets. My kernel is running in thumb mode and > > >> without SMP. > > >> > > >> Ethan, we'll need your config I guess. > > > > > > Can both of you also report the U-Boot version you're using, and the > > > SoC revision (it's visible in the U-Boot output). > > > > Mine says: > > > > U-Boot 2009.08 (Sep 16 2012 - 22:50:06)Marvell version: 1.1.2 NQ > > SoC: MV6710 A1 > > I just checked on my old captures and I have the same here, with more > details such as the CPU's revision (Rev 1) : > > http://1wt.eu/articles/mirabox-vs-guruplug/ BTW Ethan, I don't know if you have already opened your mirabox, but on the link above you'll find settings for trying other frequencies for the CPU. It could be nice to try 1 GHz with L2/DDR @500 instead of 1200/600 to see if the issue remains or not. If it disappears, there's also a working setting with CPU at 1.2G, L2 at 800M and DDR at 400M to help find if CPU, L2 or DDR is the culprit. Willy From mboxrd@z Thu Jan 1 00:00:00 1970 From: Willy Tarreau Subject: Re: mvneta: oops in __rcu_read_lock on mirabox Date: Mon, 16 Sep 2013 18:44:12 +0200 Message-ID: <20130916164412.GD3188@1wt.eu> References: <20130915205701.5c61a444@skate> <20130916065047.GH27487@1wt.eu> <20130916175152.4e013457@skate> <20130916163937.GC3188@1wt.eu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Thomas Petazzoni , Andrew Lunn , Jason Cooper , netdev@vger.kernel.org, Ezequiel Garcia , Gregory =?iso-8859-1?Q?Cl=E9ment?= , linux-arm-kernel@lists.infradead.org To: Ethan Tuttle Return-path: Content-Disposition: inline In-Reply-To: <20130916163937.GC3188@1wt.eu> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org List-Id: netdev.vger.kernel.org On Mon, Sep 16, 2013 at 06:39:37PM +0200, Willy Tarreau wrote: > On Mon, Sep 16, 2013 at 09:35:16AM -0700, Ethan Tuttle wrote: > > On Mon, Sep 16, 2013 at 8:51 AM, Thomas Petazzoni > > wrote: > > > Willy, Ethan, > > > > > > On Mon, 16 Sep 2013 08:50:47 +0200, Willy Tarreau wrote: > > > > > >> I'm currently testing on 3.11.1 (which I had here) and am not getting > > >> any issue after 50M packets. My kernel is running in thumb mode and > > >> without SMP. > > >> > > >> Ethan, we'll need your config I guess. > > > > > > Can both of you also report the U-Boot version you're using, and the > > > SoC revision (it's visible in the U-Boot output). > > > > Mine says: > > > > U-Boot 2009.08 (Sep 16 2012 - 22:50:06)Marvell version: 1.1.2 NQ > > SoC: MV6710 A1 > > I just checked on my old captures and I have the same here, with more > details such as the CPU's revision (Rev 1) : > > http://1wt.eu/articles/mirabox-vs-guruplug/ BTW Ethan, I don't know if you have already opened your mirabox, but on the link above you'll find settings for trying other frequencies for the CPU. It could be nice to try 1 GHz with L2/DDR @500 instead of 1200/600 to see if the issue remains or not. If it disappears, there's also a working setting with CPU@1.2G, L2@800M and DDR@400M to help find if CPU, L2 or DDR is the culprit. Willy