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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION(r212466): It made 1000 tests crash on AArch64"
   href="https://bugs.webkit.org/show_bug.cgi?id=168502">168502</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>REGRESSION(r212466): It made 1000 tests crash on AArch64
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P1
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>ossy&#64;webkit.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>fpizlo&#64;apple.com, keith_miller&#64;apple.com
          </td>
        </tr>

        <tr>
          <th>Blocks</th>
          <td>167737
          </td>
        </tr></table>
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        <pre>before: <a href="https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4617">https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4617</a> (r212462)
after: <a href="https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4618">https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4618</a> (r212482)

I bisected manually, and <a href="https://trac.webkit.org/changeset/212466">https://trac.webkit.org/changeset/212466</a> is the culprit.
r212465 - <a href="https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4627">https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4627</a>
r212466 - <a href="https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4626">https://build.webkit.org/builders/JSCOnly%20Linux%20AArch64%20Release/builds/4626</a></pre>
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