linux-kernel - Re: 2.6.31.1 boot crash, compiled with ftrace

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Message-Id: <1254301761.7286.4.camel@frodo>
Date:	Wed, 30 Sep 2009 05:09:21 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Dick Hollenbeck <dick@...tplc.com>
Cc:	linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: Re: 2.6.31.1 boot crash, compiled with ftrace

On Wed, 2009-09-30 at 04:03 -0400, Steven Rostedt wrote:
> On Tue, 2009-09-29 at 10:21 -0500, Dick Hollenbeck wrote:
> > Please help with a kernel boot crash.  This is happening with ftrace 
> > enabled.   (I have yet to try without ftrace.)  This same box runs 
> > kernel 2.6.26 fine.
> > 
> > While running 'make oldconfig' coming up from 2.6.26, the three most 
> > significant changes were:
> > 
> > 1) changed CPU from 486 to Pentium-Classic
> > 
> > 2) Added "High Memory Support" 4 GB
> > 
> > 3) Enabled various ftrace options, because I am on the hunt for some 
> > insane latency problems.
> > 
> 
> Hi Dick,
> 
> Thanks for reporting this. Peter and I have been taking some look at it.
> We are not sure that it is ftrace related. have you tried booting the
> kernel without adding ftrace?

Hi,

I just booted your config a couple of times without any issues. How
reproducible is this?

Thanks,

-- Steve

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