"__tracepoint_sched_process_fork undefined", wenn systemstap Skript

Question

Die Fehlerinfo laufen:

WARNING: "__tracepoint_sched_process_fork" [/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko] undefined! 
WARNING: "__tracepoint_sys_exit" [/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko] undefined! 
WARNING: "__tracepoint_sys_enter" [/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko] undefined! 
WARNING: "__tracepoint_sched_process_exec" [/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko] undefined! 
WARNING: "__tracepoint_sched_process_exit" [/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko] undefined! 
ERROR: Couldn't insert module '/tmp/stapH5cHsd/stap_958d0ff0e571c9357f1e193511d8baa3_269311.ko': Unknown symbol in module 
WARNING: /usr/bin/staprun exited with status: 1 
Pass 5: run failed. [man error::pass5] 
Tip: /usr/share/doc/systemtap/README.Debian should help you get started. 

Mein env:

# cat /proc/version 
Linux version 3.16.0-70-generic (buildd@lgw01-01) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)) #90~14.04.1-Ubuntu SMP Wed Apr 6 22:56:34 UTC 2016 

# stap -V 
Systemtap translator/driver (version 2.3/0.158, Debian version 2.3-1ubuntu1.4 (trusty)) 
Copyright (C) 2005-2013 Red Hat, Inc. and others 
This is free software; see the source for copying conditions. 
enabled features: AVAHI LIBSQLITE3 NSS TR1_UNORDERED_MAP NLS 

# dpkg --list | grep `uname -r` 

ii linux-headers-3.16.0-70-generic      3.16.0-70.90~14.04.1        amd64  Linux kernel headers for version 3.16.0 on 64 bit x86 SMP 
ii linux-image-3.16.0-70-generic       3.16.0-70.90~14.04.1        amd64  Linux kernel image for version 3.16.0 on 64 bit x86 SMP 
ii linux-image-3.16.0-70-generic-dbgsym     3.16.0-70.90~14.04.1        amd64  Linux kernel debug image for version 3.16.0 on 64 bit x86 SMP 
ii linux-image-extra-3.16.0-70-generic     3.16.0-70.90~14.04.1        amd64  Linux kernel extra modules for version 3.16.0 on 64 bit x86 SMP 
ii linux-signed-image-3.16.0-70-generic     3.16.0-70.90~14.04.1        amd64  Signed kernel image generic 


# sudo cat /proc/kallsyms | grep __tracepoint_sched_process_fork 
ffffffff81cecbe0 D __tracepoint_sched_process_fork 

Answer 1

Ich stelle diese Frage auf the maillist of systemtap, und ich bekomme schnell die Antwort.

Es ist, weil "die Tracepoint API in Kernel 3.15 geändert, und wir bis zu diesen Änderungen in Systemtap 2.5 gefangen" aka ich brauche eine neue Version von Systemtap.

Nach dem Download und installieren Sie es, es funktioniert gut ohne diesen Fehler.