Re: userstacktrace entries coming out as all zeros

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On Wed, 2011-04-13 at 01:11 -0400, greenrd@xxxxxxxxxxx wrote:
> If I do
> 
> trace-cmd record -T -O userstacktrace -e all -F lxc-execute -n fedora
> /bin/bash
> 
> the userstacktrace entries all show up as all zeros, like this:
> 
>      lxc-execute-4020  [001]  4365.325591: user_stack:                  =>
> (00000000)
>         => (00000000)
>         => (00000000)
>         => (00000000)
>         => (00000000)
>         => (00000000)
>         => (00000000)
>         => (00000000)
> 
> in trace-report.

What kernel version was this? IIRC I fixed a bug in one of the kernel
versions that caused this. I tried it out on my 2.6.33 fedora box and
got the same issue, but on 2.6.38 it seemed to work.

-- Steve


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