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

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Message-Id: <1254297804.2963.14.camel@frodo>
Date:	Wed, 30 Sep 2009 04:03:24 -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 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?

Thanks,

-- Steve


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