<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>148292</bug_id>
          
          <creation_ts>2015-08-20 22:41:09 -0700</creation_ts>
          <short_desc>this page can make cpu to 100% and the code into while(1) and can&apos;t break.</short_desc>
          <delta_ts>2021-11-29 09:09:22 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Platform</component>
          <version>WebKit Local Build</version>
          <rep_platform>Other</rep_platform>
          <op_sys>Linux</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>INVALID</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Critical</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="oo">whoisgyy</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>ysuzuki</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1119669</commentid>
    <comment_count>0</comment_count>
    <who name="oo">whoisgyy</who>
    <bug_when>2015-08-20 22:41:09 -0700</bug_when>
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/&gt;&lt;/a&gt;&lt;/div&gt;&lt;a href=&apos;db_structure.php?server=1&amp;amp;db=phpmyadmin&amp;amp;token=ff6e31fc3a8894d3c16f79c5a305d436&apos;&gt;phpmyadmin&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;div class=&apos;block&apos;&gt;&lt;i&gt;&lt;/i&gt;&lt;b&gt;&lt;/b&gt;&lt;a class=&apos;expander&apos; href=&apos;#&apos;&gt;&lt;span class=&apos;hide aPath&apos;&gt;cm9vdA==.cHk=&lt;/span&gt;&lt;span class=&apos;hide vPath&apos;&gt;cm9vdA==.cHk=&lt;/span&gt;&lt;span class=&apos;hide pos&apos;&gt;0&lt;/span&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_b_plus&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div class=&apos;block&apos;&gt;&lt;a href=&apos;db_operations.php?server=1&amp;amp;db=py&amp;amp;token=ff6e31fc3a8894d3c16f79c5a305d436&apos;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_s_db&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;a href=&apos;db_structure.php?server=1&amp;amp;db=py&amp;amp;token=ff6e31fc3a8894d3c16f79c5a305d436&apos;&gt;py&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;div class=&apos;block&apos;&gt;&lt;i&gt;&lt;/i&gt;&lt;b&gt;&lt;/b&gt;&lt;a class=&apos;expander&apos; 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&lt;div class=&quot;clearfloat&quot;&gt;&lt;/div&gt;&lt;/div&gt;
&lt;a id=&quot;goto_pagetop&quot; href=&quot;#&quot; title=&quot;点击控制条回滚到页面顶部&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_s_top&quot; /&gt;&lt;/a&gt;&lt;div id=&quot;page_content&quot;&gt;&lt;div&gt;&lt;ul id=&quot;topmenu2&quot;&gt;&lt;li&gt;&lt;a href=&quot;server_status.php?token=ff6e31fc3a8894d3c16f79c5a305d436&quot;&gt;服务器&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href=&quot;server_status_queries.php?token=ff6e31fc3a8894d3c16f79c5a305d436&quot;&gt;查询统计&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href=&quot;server_status_variables.php?token=ff6e31fc3a8894d3c16f79c5a305d436&quot;&gt;所有状态变量&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a class=&quot;tabactive&quot; href=&quot;server_status_monitor.php?token=ff6e31fc3a8894d3c16f79c5a305d436&quot;&gt;监控&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href=&quot;server_status_advisor.php?token=ff6e31fc3a8894d3c16f79c5a305d436&quot;&gt;建议&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;&lt;div class=&quot;clearfloat&quot;&gt;&lt;/div&gt;&lt;div class=&quot;tabLinks&quot;&gt;&lt;a href=&quot;#pauseCharts&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_play&quot; /&gt;启动监控&lt;/a&gt;&lt;a href=&quot;#settingsPopup&quot; class=&quot;popupLink&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_s_cog&quot; /&gt;设置&lt;/a&gt;&lt;a href=&quot;#monitorInstructionsDialog&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_b_help&quot; /&gt;说明/设置&lt;a href=&quot;#endChartEditMode&quot; style=&quot;display:none;&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_s_okay&quot; /&gt;Done dragging (rearranging) charts&lt;/a&gt;&lt;/div&gt;&lt;div class=&quot;popupContent settingsPopup&quot;&gt;&lt;a href=&quot;#addNewChart&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_b_chart&quot; /&gt;添加图表&lt;/a&gt;&lt;a href=&quot;#rearrangeCharts&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_b_tblops&quot; /&gt;Enable charts dragging&lt;/a&gt;&lt;div class=&quot;clearfloat paddingtop&quot;&gt;&lt;/div&gt;&lt;div class=&quot;floatleft&quot;&gt;刷新频率&lt;br /&gt;&lt;select name=&quot;gridChartRefresh&quot; id=&quot;id_gridChartRefresh&quot; class=&quot;refreshRate&quot;&gt;&lt;option value=&quot;2&quot;&gt;2 秒&lt;/option&gt;&lt;option value=&quot;3&quot;&gt;3 秒&lt;/option&gt;&lt;option value=&quot;4&quot;&gt;4 秒&lt;/option&gt;&lt;option value=&quot;5&quot; selected=&quot;selected&quot;&gt;5 秒&lt;/option&gt;&lt;option value=&quot;10&quot;&gt;10 秒&lt;/option&gt;&lt;option value=&quot;20&quot;&gt;20 秒&lt;/option&gt;&lt;option value=&quot;40&quot;&gt;40 秒&lt;/option&gt;&lt;option value=&quot;60&quot;&gt;1 分&lt;/option&gt;&lt;option value=&quot;120&quot;&gt;2 分&lt;/option&gt;&lt;option value=&quot;300&quot;&gt;5 分&lt;/option&gt;&lt;option value=&quot;600&quot;&gt;10 分&lt;/option&gt;&lt;option value=&quot;1200&quot;&gt;20 分&lt;/option&gt;&lt;/select&gt;&lt;br /&gt;&lt;/div&gt;&lt;div class=&quot;floatleft&quot;&gt;每行图表个数&lt;br /&gt;&lt;select name=&quot;chartColumns&quot;&gt;&lt;option&gt;1&lt;/option&gt;&lt;option&gt;2&lt;/option&gt;&lt;option&gt;3&lt;/option&gt;&lt;option&gt;4&lt;/option&gt;&lt;option&gt;5&lt;/option&gt;&lt;option&gt;6&lt;/option&gt;&lt;option&gt;7&lt;/option&gt;&lt;option&gt;8&lt;/option&gt;&lt;option&gt;9&lt;/option&gt;&lt;option&gt;10&lt;/option&gt;&lt;/select&gt;&lt;/div&gt;&lt;div class=&quot;clearfloat paddingtop&quot;&gt;&lt;b&gt;图表排列&lt;/b&gt; &lt;span class=&quot;pma_hint&quot;&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_b_help&quot; /&gt;&lt;span class=&quot;hide&quot;&gt;图表排列存储在浏览器本地存储。如果你设置了一个复杂的排列，请导出该设置。&lt;/span&gt;&lt;/span&gt;&lt;br/&gt;&lt;a class=&quot;ajax&quot; href=&quot;#importMonitorConfig&quot;&gt;导入&lt;/a&gt;&amp;nbsp;&amp;nbsp;&lt;a class=&quot;disableAjax&quot; href=&quot;#exportMonitorConfig&quot;&gt;导出&lt;/a&gt;&amp;nbsp;&amp;nbsp;&lt;a href=&quot;#clearMonitorConfig&quot;&gt;恢复默认&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id=&quot;monitorInstructionsDialog&quot; title=&quot;监控说明&quot; style=&quot;display:none;&quot;&gt;phpMyAdmin 监控可以帮助你优化服务期配置并追踪特定查询。要实现追踪查询功能，你需要将 log_output 设置为 &apos;TABLE&apos; 并启用 slow_query_log 或 general_log 功能。请注意，general_log 会产生很多数据并可能增加服务器负载多达 15%&lt;p&gt;&lt;/p&gt;&lt;img class=&quot;ajaxIcon&quot; src=&quot;./themes/pmahomme/img/ajax_clock_small.gif&quot; alt=&quot;正在加载&quot; /&gt;&lt;div class=&quot;ajaxContent&quot;&gt;&lt;/div&gt;&lt;div class=&quot;monitorUse&quot; style=&quot;display:none;&quot;&gt;&lt;p&gt;&lt;/p&gt;&lt;strong&gt;使用监控:&lt;/strong&gt;&lt;p&gt;您的浏览器将会以一定的频率刷新所有已显示的图表。您可以在&apos;设置&apos;中添加图表或修改刷新频率，您也可以通过每个图表的齿轮图标来删除图表。&lt;/p&gt;&lt;p&gt;要从日志中显示查询，请通过按下鼠标左键并拖拽选择一段时间范围。确定后，将会显示出分好组的查询，您可以点击任意 SELECT 查询以进一步分析。&lt;/p&gt;&lt;p&gt;&lt;img src=&quot;themes/dot.gif&quot; title=&quot;&quot; alt=&quot;&quot; class=&quot;icon ic_s_attention&quot; /&gt;&lt;strong&gt;请注意：&lt;/strong&gt;&lt;br /&gt;启用 general_log 可能会增加 5-15% 的服务器负载。从日志中统计数据同样也是高负载的任务，建议选择一段小范围的时间并在用完监控后禁止 general_log 并清空它的表。&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id=&quot;addChartDialog&quot; title=&quot;添加图表&quot; style=&quot;display:none;&quot;&gt;&lt;div id=&quot;tabGridVariables&quot;&gt;&lt;p&gt;&lt;input type=&quot;text&quot; name=&quot;chartTitle&quot; value=&quot;图表标题&quot; /&gt;&lt;/p&gt;&lt;input type=&quot;radio&quot; name=&quot;chartType&quot; value=&quot;preset&quot; id=&quot;chartPreset&quot; /&gt;&lt;label for=&quot;chartPreset&quot;&gt;预置图表&lt;/label&gt;&lt;select name=&quot;presetCharts&quot;&gt;&lt;/select&gt;&lt;br/&gt;&lt;input type=&quot;radio&quot; name=&quot;chartType&quot; value=&quot;variable&quot; id=&quot;chartStatusVar&quot; checked=&quot;checked&quot; /&gt;&lt;label for=&quot;chartStatusVar&quot;&gt;状态变量&lt;/label&gt;&lt;br/&gt;&lt;div id=&quot;chartVariableSettings&quot;&gt;&lt;label for=&quot;chartSeries&quot;&gt;选择数据:&lt;/label&gt;&lt;br /&gt;&lt;select id=&quot;chartSeries&quot; name=&quot;varChartList&quot; size=&quot;1&quot;&gt;&lt;option&gt;常用监控&lt;/option&gt;&lt;option&gt;Processes&lt;/option&gt;&lt;option&gt;Questions&lt;/option&gt;&lt;option&gt;Connections&lt;/option&gt;&lt;option&gt;Bytes_sent&lt;/option&gt;&lt;option&gt;Bytes_received&lt;/option&gt;&lt;option&gt;Threads_connected&lt;/option&gt;&lt;option&gt;Created_tmp_disk_tables&lt;/option&gt;&lt;option&gt;Handler_read_first&lt;/option&gt;&lt;option&gt;Innodb_buffer_pool_wait_free&lt;/option&gt;&lt;option&gt;Key_reads&lt;/option&gt;&lt;option&gt;Open_tables&lt;/option&gt;&lt;option&gt;Select_full_join&lt;/option&gt;&lt;option&gt;Slow_queries&lt;/option&gt;&lt;/select&gt;&lt;br /&gt;&lt;label for=&quot;variableInput&quot;&gt;或输入变量名: &lt;/label&gt;&lt;input type=&quot;text&quot; name=&quot;variableInput&quot; id=&quot;variableInput&quot; /&gt;&lt;p&gt;&lt;/p&gt;&lt;input type=&quot;checkbox&quot; name=&quot;differentialValue&quot; id=&quot;differentialValue&quot; value=&quot;differential&quot; checked=&quot;checked&quot; /&gt;&lt;label for=&quot;differentialValue&quot;&gt;独立显示&lt;/label&gt;&lt;br /&gt;&lt;input type=&quot;checkbox&quot; id=&quot;useDivisor&quot; name=&quot;useDivisor&quot; value=&quot;1&quot; /&gt;&lt;label for=&quot;useDivisor&quot;&gt;应用除数&lt;/label&gt;&lt;span class=&quot;divisorInput&quot; style=&quot;display:none;&quot;&gt;&lt;input type=&quot;text&quot; name=&quot;valueDivisor&quot; size=&quot;4&quot; value=&quot;1&quot; /&gt;(&lt;a href=&quot;#kibDivisor&quot;&gt;KB&lt;/a&gt;, &lt;a href=&quot;#mibDivisor&quot;&gt;MB&lt;/a&gt;)&lt;/span&gt;&lt;br /&gt;&lt;input type=&quot;checkbox&quot; id=&quot;useUnit&quot; name=&quot;useUnit&quot; value=&quot;1&quot; /&gt;&lt;label for=&quot;useUnit&quot;&gt;在值后附加单位&lt;/label&gt;&lt;span class=&quot;unitInput&quot; style=&quot;display:none;&quot;&gt;&lt;input type=&quot;text&quot; name=&quot;valueUnit&quot; size=&quot;4&quot; value=&quot;&quot; /&gt;&lt;/span&gt;&lt;p&gt;&lt;a href=&quot;#submitAddSeries&quot;&gt;&lt;b&gt;添加该数据&lt;/b&gt;&lt;/a&gt;&lt;span id=&quot;clearSeriesLink&quot; style=&quot;display:none;&quot;&gt; | &lt;a href=&quot;#submitClearSeries&quot;&gt;清除所有数据&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;图表中的数据:&lt;br/&gt;&lt;span id=&quot;seriesPreview&quot;&gt;&lt;i&gt;无&lt;/i&gt;&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id=&quot;logAnalyseDialog&quot; title=&quot;日志统计&quot; style=&quot;display:none;&quot;&gt;&lt;p&gt;选择时间范围:&lt;input type=&quot;text&quot; name=&quot;dateStart&quot; class=&quot;datetimefield&quot; value=&quot;&quot; /&gt; - &lt;input type=&quot;text&quot; name=&quot;dateEnd&quot; class=&quot;datetimefield&quot; value=&quot;&quot; /&gt;&lt;/p&gt;&lt;input type=&quot;checkbox&quot; id=&quot;limitTypes&quot; value=&quot;1&quot; checked=&quot;checked&quot; /&gt;&lt;label for=&quot;limitTypes&quot;&gt;仅统计 SELECT、INSERT、UPDATE 和 DELETE 语句&lt;/label&gt;&lt;br/&gt;&lt;input type=&quot;checkbox&quot; id=&quot;removeVariables&quot; value=&quot;1&quot; checked=&quot;checked&quot; /&gt;&lt;label for=&quot;removeVariables&quot;&gt;去除 INSERT 语句中的变量值以获得更好的分组&lt;/label&gt;&lt;p&gt;请选择生成统计的来源日志。&lt;/p&gt;&lt;p&gt;结果将根据查询语句分组。&lt;/p&gt;&lt;/div&gt;&lt;div id=&quot;queryAnalyzerDialog&quot; title=&quot;查询分析器&quot; style=&quot;display:none;&quot;&gt;&lt;textarea id=&quot;sqlquery&quot;&gt; &lt;/textarea&gt;&lt;p&gt;&lt;/p&gt;&lt;div class=&quot;placeHolder&quot;&gt;&lt;/div&gt;&lt;/div&gt;&lt;table class=&quot;clearfloat&quot; id=&quot;chartGrid&quot;&gt;&lt;/table&gt;&lt;div id=&quot;logTable&quot;&gt;&lt;br/&gt;&lt;/div&gt;&lt;script type=&quot;text/javascript&quot;&gt;variableNames = [ &apos;Aborted_clients&apos;, &apos;Aborted_connects&apos;, &apos;Binlog_cache_disk_use&apos;, &apos;Binlog_cache_use&apos;, &apos;Binlog_stmt_cache_disk_use&apos;, &apos;Binlog_stmt_cache_use&apos;, &apos;Bytes_received&apos;, &apos;Bytes_sent&apos;, &apos;Com_admin_commands&apos;, &apos;Com_assign_to_keycache&apos;, 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  </long_desc><long_desc isprivate="0" >
    <commentid>1119672</commentid>
    <comment_count>1</comment_count>
    <who name="oo">whoisgyy</who>
    <bug_when>2015-08-20 22:45:07 -0700</bug_when>
    <thetext>webkit version:r154377

FontCache.cpp -&gt; getCachedFontData -&gt; gFontDataCache-&gt;set(*platformData, newValue);

it have a while(1) and can&apos;t break.

oh，god!</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>