<?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>311042</bug_id>
          
          <creation_ts>2026-03-29 17:30:49 -0700</creation_ts>
          <short_desc>[Debug] WebKitTestRunner crashes during model-related runs</short_desc>
          <delta_ts>2026-03-30 09:35:04 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>New Bugs</component>
          <version>Other</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Aleksei Marchenko">aleksei</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2194923</commentid>
    <comment_count>0</comment_count>
    <who name="Aleksei Marchenko">aleksei</who>
    <bug_when>2026-03-29 17:30:49 -0700</bug_when>
    <thetext>Stack trace:

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   JavaScriptCore                	       0x118e965bc WTFCrash + 0
1   JavaScriptCore                	       0x118e9661c WTFCrashWithSecurityImplication + 12
2   WebKit                        	       0x138b819fc WTF::CanMakeCheckedPtrBase&lt;std::__1::atomic&lt;unsigned int&gt;, unsigned int, std::__1::atomic&lt;bool&gt;, (WTF::CheckedPtrDeleteCheckException)0&gt;::~CanMakeCheckedPtrBase() + 132 (CheckedRef.h:365)
3   WebKit                        	       0x13b1a0e90 WTF::CanMakeThreadSafeCheckedPtr&lt;IPC::Connection::Client, (WTF::DefaultedOperatorEqual)0, (WTF::CheckedPtrDeleteCheckException)0&gt;::~CanMakeThreadSafeCheckedPtr() + 28
4   WebKit                        	       0x13b18f6cc IPC::Connection::Client::~Client() + 32
5   WebKit                        	       0x13c20f150 WebKit::AuxiliaryProcessProxy::~AuxiliaryProcessProxy() + 600
6   WebKit                        	       0x13c815268 WebKit::ModelProcessProxy::~ModelProcessProxy() + 52
7   WebKit                        	       0x13c815294 WebKit::ModelProcessProxy::~ModelProcessProxy() + 28
8   WebKit                        	       0x13c8152f8 WebKit::ModelProcessProxy::~ModelProcessProxy() + 28
9   WebKit                        	       0x138bd1e90 WTF::ThreadSafeRefCounted&lt;WebKit::AuxiliaryProcessProxy, (WTF::DestructionThread)2&gt;::deref() const::&apos;lambda&apos;()::operator()() const + 60
10  WebKit                        	       0x138bd1e1c WTF::Detail::CallableWrapper&lt;WTF::ThreadSafeRefCounted&lt;WebKit::AuxiliaryProcessProxy, (WTF::DestructionThread)2&gt;::deref() const::&apos;lambda&apos;(), void&gt;::call() + 28
11  JavaScriptCore                	       0x118ecccd4 WTF::Function&lt;void ()&gt;::operator()() const + 148
12  JavaScriptCore                	       0x118f57964 WTF::ensureOnMainRunLoop(WTF::Function&lt;void ()&gt;&amp;&amp;) + 36
13  WebKit                        	       0x138bd1b34 WTF::ThreadSafeRefCounted&lt;WebKit::AuxiliaryProcessProxy, (WTF::DestructionThread)2&gt;::deref() const + 72</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2194933</commentid>
    <comment_count>1</comment_count>
    <who name="Aleksei Marchenko">aleksei</who>
    <bug_when>2026-03-29 18:03:26 -0700</bug_when>
    <thetext>&lt;rdar://problem/173646341&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2194934</commentid>
    <comment_count>2</comment_count>
    <who name="Aleksei Marchenko">aleksei</who>
    <bug_when>2026-03-29 18:04:15 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/61639</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2195196</commentid>
    <comment_count>3</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-03-30 09:35:01 -0700</bug_when>
    <thetext>Committed 310237@main (ea544ba94313): &lt;https://commits.webkit.org/310237@main&gt;

Reviewed commits have been landed. Closing PR #61639 and removing active labels.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>