<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Dead lock when forking with coverage enabled in multithreaded environment"
href="https://bugs.llvm.org/show_bug.cgi?id=44792">44792</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Dead lock when forking with coverage enabled in multithreaded environment
</td>
</tr>
<tr>
<th>Product</th>
<td>compiler-rt
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>profile
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cdenizet@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>When forking, the mutex defined here:
<a href="https://github.com/llvm/llvm-project/blob/master/compiler-rt/lib/profile/GCDAProfiling.c#L67">https://github.com/llvm/llvm-project/blob/master/compiler-rt/lib/profile/GCDAProfiling.c#L67</a>
must be reinitialized in child process else the mutex in a locked stated can be
duplicate and then when a thread in child process attempts to lock it then it
wait for ever.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>