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Subject: Re: [3.4-rc3] Thread overran stack, or stack corrupted
From: Steven Rostedt <rostedt@goodmis.org>
To: Dave Jones <davej@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>
Date: Wed, 18 Apr 2012 00:09:24 -0400
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On Wed, 2012-04-18 at 00:06 -0400, Dave Jones wrote:

> That just prints out..
> 
> # tracer: function
> #
> # entries-in-buffer/entries-written: 0/0   #P:4
> #
> #                              _-----=> irqs-off
> #                             / _----=> need-resched
> #                            | / _---=> hardirq/softirq
> #                            || / _--=> preempt-depth
> #                            ||| /     delay
> #           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
> #              | |       |   ||||       |         |
> 
>  > I'm also assuming you have CONFIG_STACKTRACE and
>  > CONFIG_STACKTRACE_SUPPORT enabled. They should be selected, but configs
>  > can always get screwed up.
> 
> CONFIG_STACKTRACE_SUPPORT=y
> CONFIG_STACKTRACE=y
> 

OK, function tracing is broken on your box. Could you send me your full
config and I'll take a look at it tomorrow. Bed time for me now ;-)

-- Steve