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Date: Wed, 11 May 2011 15:13:01 -0400 From: Nick Bowler <nbowler@...iptictech.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: linux-kernel@...r.kernel.org, autofs@...ux.kernel.org, Ian Kent <raven@...maw.net>, Peter Zijlstra <peterz@...radead.org> Subject: Re: Lockdep splat in autofs with 2.6.39-rc2 On 2011-04-27 09:22 -0400, Nick Bowler wrote: > On 2011-04-21 17:25 -0400, Steven Rostedt wrote: > > On Thu, Apr 07, 2011 at 03:44:03PM -0400, Nick Bowler wrote: > > > Just saw this on 2.6.39-rc2 after half a day or so of uptime. I've > > > never seen it before today so it may be a regression from 2.6.38. > > > Nothing seems have failed as a result. Please let me know if you > > > need any more info. > > > > Could you try this patch. I know it may be hard to reproduce, but the > > issue is that we are recursing down the locks in a tree/list and we changed a > > lock from being nested to being a parent. This patch tells lockdep about > > what we did. > > OK, I've built 2.6.39-rc5 with this patch applied. However, it took ~5 > days before I saw any splat with -rc4, thus it's unlikely that I'll be > able to say for sure that it works. FWIW, haven't had any problems with this kernel (+ patch) during the last two weeks. Cheers, -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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