[Bug runtime/16836] CFI expression underflow occurs during unwinding on some kernels

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16836

Frank Ch. Eigler <fche at redhat dot com> changed:

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                 CC|                            |fche at redhat dot com

--- Comment #3 from Frank Ch. Eigler <fche at redhat dot com> ---
I believe stack -underflow- can only occur if the DWARF CFI data is invalid, or
if we interpret it in an incorrect manner.  It'd really help to extract that
somehow.  Or try running with  

    stap -DDEBUG_UNWIND=2 [...]

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