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Too many CFI instuctions
- From: maliubiao <maliubiao at gmail dot com>
- To: systemtap at sourceware dot org
- Date: Sun, 29 Sep 2013 22:53:04 +0800
- Subject: Too many CFI instuctions
- Authentication-results: sourceware.org; auth=none
Hi, I am trying to capture some stack data of python runtime and draw
the function graph somewhere.
systemtap script:
global s;
probe process("../python").function("*") {
s[sprint_ubacktrace()] <<< 1;
}
probe end {
foreach ([stack] in s+) {
printf("%s\\n\\n", stack);
}
}
After a signal python command "1+1", The python runtime crashed with
segment fault, The message in systemtap is "Too many CFI instuctions,
Too many pending (warning) messages". What's CFI instuction ? Why
segment fault?