SystemTap_Beginners_Guide/runtimeerror.html

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42  <?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title xmlns:d="http://docbook.org/ns/docbook">6.2. Runtime Errors and Warnings</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta xmlns:d="http://docbook.org/ns/docbook" name="generator" content="not publican" /><meta xmlns:d="http://docbook.org/ns/docbook" name="package" content="" /><link rel="home" href="index.html" title="SystemTap Beginners Guide" /><link rel="up" href="errors.html" title="Chapter 6. Understanding SystemTap Errors" /><link rel="prev" href="errors.html" title="Chapter 6. Understanding SystemTap Errors" /><link rel="next" href="references.html" title="Chapter 7. References" /></head><body><p id="title"></p><ul class="docnav top"><li class="previous"><a accesskey="p" href="errors.html"><strong>Prev</strong></a></li><li class="home">SystemTap Beginners Guide</li><li class="next"><a accesskey="n" href="references.html"><strong>Next</strong></a></li></ul><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="runtimeerror"> ⁠</a>6.2. Runtime Errors and Warnings</h2></div></div></div><a id="id5806" class="indexterm"></a><a id="id5809" class="indexterm"></a><a id="id5812" class="indexterm"></a><div class="para">	Runtime errors and warnings occur when the SystemTap	instrumentation has been installed and is collecting data on	the system. </div><h3><a id="id5816"> ⁠</a>WARNING: Number of errors: <em class="replaceable">N</em>, skipped probes: <em class="replaceable">M</em></h3><a id="id5819" class="indexterm"></a><a id="id5823" class="indexterm"></a><a id="id5827" class="indexterm"></a><a id="id5831" class="indexterm"></a><div class="para">	Errors and/or skipped probes occurred during this run. Both <em class="replaceable">N</em> and <em class="replaceable">M</em> are	the counts of the number of probes that were not executed due to	conditions such as too much time required to execute event handlers over	an interval of time. </div><h3><a id="id5838"> ⁠</a>division by 0</h3><a id="id5839" class="indexterm"></a><a id="id5843" class="indexterm"></a><a id="id5847" class="indexterm"></a><a id="id5851" class="indexterm"></a><a id="id5855" class="indexterm"></a><div class="para">	The script code performed an invalid division. </div><h3><a id="id5860"> ⁠</a>aggregate element not found</h3><a id="id5861" class="indexterm"></a><a id="id5865" class="indexterm"></a><a id="id5869" class="indexterm"></a><a id="id5873" class="indexterm"></a><div class="para">	A statistics extractor function other than <code class="command">@count</code>	was invoked on an aggregate that has not had any values accumulated yet.	This is similar to a division by zero. </div><h3><a id="id5879"> ⁠</a>aggregation overflow</h3><a id="id5880" class="indexterm"></a><a id="id5884" class="indexterm"></a><a id="id5888" class="indexterm"></a><a id="id5892" class="indexterm"></a><a id="id5896" class="indexterm"></a><div class="para"> An array containing aggregate values contains too many distinct key pairs at this time. </div><h3><a id="id5901"> ⁠</a>MAXNESTING exceeded</h3><a id="id5902" class="indexterm"></a><a id="id5906" class="indexterm"></a><a id="id5910" class="indexterm"></a><a id="id5914" class="indexterm"></a><a id="id5918" class="indexterm"></a><div class="para">	Too many levels of function call nesting were attempted.	The default nesting of function calls allowed is 10. </div><h3><a id="id5923"> ⁠</a>MAXACTION exceeded</h3><a id="id5924" class="indexterm"></a><a id="id5928" class="indexterm"></a><a id="id5932" class="indexterm"></a><a id="id5936" class="indexterm"></a><a id="id5940" class="indexterm"></a><div class="para">	The probe handler attempted to execute too many statements in the	probe handler. The default number of actions allowed in a probe handler	is 1000. </div><h3><a id="id5945"> ⁠</a>kernel/user string copy fault at <em class="replaceable">ADDR</em></h3><a id="id5947" class="indexterm"></a><a id="id5951" class="indexterm"></a><a id="id5955" class="indexterm"></a><a id="id5959" class="indexterm"></a><div class="para">	The probe handler attempted to copy a string from kernel or	user space at an invalid address (<em class="replaceable">ADDR</em>). </div><h3><a id="id5965"> ⁠</a>pointer dereference fault</h3><a id="id5966" class="indexterm"></a><a id="id5970" class="indexterm"></a><a id="id5974" class="indexterm"></a><a id="id5978" class="indexterm"></a><div class="para">	There was a fault encountered during a pointer	dereference operation such as a target variable evaluation. </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="errors.html"><strong>Prev</strong>Chapter 6. Understanding SystemTap Errors</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="references.html"><strong>Next</strong>Chapter 7. References</a></li></ul></body></html>