linux-kernel - Re: ftrace WARNING during boot

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Date:	Sat, 3 Oct 2009 16:00:58 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Matti Aarnio <matti.aarnio@...iler.org>,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: ftrace WARNING during boot


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> On Sat, Oct 03, 2009 at 02:28:50PM +0300, Matti Aarnio wrote:
> > On Sat, Oct 03, 2009 at 01:00:03PM +0200, Frederic Weisbecker wrote:
> > > On Sat, Oct 03, 2009 at 01:53:18PM +0300, Matti Aarnio wrote:
> > > > This is perhaps already fixed, as I have two a bit newer kernels than this one,
> > > > but reporting is better than being silent..
> > > 
> > > 
> > > Hi,
> > > 
> > > Which kernel is this? Does it happen in the current 2.6.32-rc1 ?
> > 
> > I do know that reading the trace is difficult, but the asked for information
> > is down in there.  Intentionally put there by the kernel-oops coders, I presume.
> 
> 
> Ah ok. It's just that I'm not that familiar with fedora's kernels naming :-)
> 
>  
> > I do use vendor kernels, and Fedora 12 beta program has not yet made
> > 2.6.32-rc1 kernel available.
> > 
> > However this does not appear in 2.6.31.1-56.fc12.x86_64 kernel that 
> > is lattest from vendor, but there I have some other troubles why I 
> > took a bit older kernel. (Other troubles with the xfs filesystem 
> > lock handling.)
> 
> So this looks based on a 2.6.31.1 kernel, more stable. And if it 
> doesn't happen with it, then it's fine.
> 
> That said, it's all about fedora based kernel so it's a bit hard to 
> tell if it came from fedora adds or vanilla kernel code.

Fedora generally doesnt modify any ftrace details.

	Ingo
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