linux-kernel - Re: [3.4-rc3] Thread overran stack, or stack corrupted

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Date:	Tue, 17 Apr 2012 23:43:31 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Dave Jones <davej@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [3.4-rc3] Thread overran stack, or stack corrupted

On Tue, 2012-04-17 at 23:15 -0400, Dave Jones wrote:

> That looks handy. Doesn't seem to work for me though on my test box.
> (config option is enabled.)
> 
> # echo 1 > /proc/sys/kernel/stack_tracer_enabled
> # cat /sys/kernel/debug/tracing/stack_trace
>         Depth    Size   Location    (-1 entries)
>         -----    ----   --------
> 
> That's all she wrote.

Hmm, was there any problems with the function tracer?
Messages in dmesg?

Just to make sure, what does

 /sys/kernel/debug/tracing/enabled_functions

have?

This would show what functions the stack tracer is using.

I just compiled the latest vanilla kernel and tried it out, and it
worked for me.

-- Steve


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