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[Bug runtime/15664] Kernel crash when using ubacktrace/print_ubacktrace in timer.profile on kernel 3.9.4


http://sourceware.org/bugzilla/show_bug.cgi?id=15664

--- Comment #3 from agentzh <agentzh at gmail dot com> ---
We were using the following script:

https://github.com/agentzh/nginx-systemtap-toolkit/blob/master/ngx-sample-bt

And we were specifying the -u option, that is, using ubacktrace() and
print_ubacktrace() only.

We're seeing the warning "WARNING: Missing unwind data for module, rerun with
'stap -d stap_144a2a5f843564742581d523725a704f_2987'" just because we were
using probe timer.profile in the script, I guess :)

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