Messages in this thread | | | Subject | Re: [3.4-rc3] Thread overran stack, or stack corrupted | From | Steven Rostedt <> | Date | Tue, 17 Apr 2012 23:57:21 -0400 |
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On Tue, 2012-04-17 at 23:50 -0400, Dave Jones wrote:
> > Just to make sure, what does > > > > /sys/kernel/debug/tracing/enabled_functions > > > > have? > > 33503 lines.
That sounds correct.
> > > 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. > > works on my other machines too with similar kernel configs, just not on the one I'm profiling.
I have to ask. Is this a x86 box?
Also, have you tested to see if function tracing works?
# cd /sys/kernel/debug/tracing # echo function > current_tracer # cat trace
If function tracing doesn't work this wouldn't either.
I'm also assuming you have CONFIG_STACKTRACE and CONFIG_STACKTRACE_SUPPORT enabled. They should be selected, but configs can always get screwed up.
-- Steve
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