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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - CONFIG_STACK_VALIDATION=y causes compilation from source of external drivers to fail"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=99277">99277</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>CONFIG_STACK_VALIDATION=y causes compilation from source of external drivers to fail
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>tomasjonnes@outlook.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>After building the linux branch intel-drm-nightly kernel (4.10) with the
default values, booting the new kernel and trying to compile an external driver
( tested with several nvidia drivers, rtl8812AU-4.3.22 and bbswitch-0.8 ) from
source, the compilation process will try to link the object files before even
creating them. This issue is also mentioned here:
<a href="https://devtalk.nvidia.com/default/topic/926824/linux/364-1-2-5-won-t-compile-against-latest-kernel-git-tree-patches-for-4-6-0-rc3-included-/post/4852927/#4852927">https://devtalk.nvidia.com/default/topic/926824/linux/364-1-2-5-won-t-compile-against-latest-kernel-git-tree-patches-for-4-6-0-rc3-included-/post/4852927/#4852927</a>
suggesting that it is still present, at least, since intel-drm-nightly kernel
4.6. I remember I experienced this bug since late intel-drm-nightly kernel 4.8.

Right now, the only fix to this issue is to set CONFIG_STACK_VALIDATION=n on
the .config file before building the kernel. This solution is also mentioned
here:
<a href="https://devtalk.nvidia.com/default/topic/926824/linux/364-1-2-5-won-t-compile-against-latest-kernel-git-tree-patches-for-4-6-0-rc3-included-/post/4854471/#4854471">https://devtalk.nvidia.com/default/topic/926824/linux/364-1-2-5-won-t-compile-against-latest-kernel-git-tree-patches-for-4-6-0-rc3-included-/post/4854471/#4854471</a></pre>
        </div>
      </p>


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