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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - BUG: kernel NULL pointer dereference - supervisor read access in kernel mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111415">111415</a>
</td>
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<th>Summary</th>
<td>BUG: kernel NULL pointer dereference - supervisor read access in kernel mode
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tseewald@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=145088" name="attach_145088" title="dmesg of freeze">attachment 145088</a> <a href="attachment.cgi?id=145088&action=edit" title="dmesg of freeze">[details]</a></span>
dmesg of freeze
Distribution: Fedora 30
Kernel: 5.2.8
Mesa: 19.1.4
GPU: RX 560
Problem:
While browsing the internet using Chromium my entire machine froze, it was
completely unresponsive to input but audio continued to play.
Snippet of BUG:
[173497.820810] BUG: kernel NULL pointer dereference, address: 00000000000002b4
[173497.820815] #PF: supervisor read access in kernel mode
[173497.820817] #PF: error_code(0x0000) - not-present page
[173497.820818] PGD 0 P4D 0
[173497.820822] Oops: 0000 [#1] SMP PTI
[173497.820825] CPU: 2 PID: 21197 Comm: kworker/u8:2 Not tainted
5.2.8-200.fc30.x86_64 #1
[173497.820826] Hardware name: To Be Filled By O.E.M. To Be Filled By
O.E.M./Z77 Extreme4, BIOS P2.90 07/11/2013
[173497.820839] Workqueue: events_unbound commit_work [drm_kms_helper]
[173497.820953] RIP: 0010:dc_stream_log+0x6/0xb0 [amdgpu]
See attached dmesg for full message.
Let me know if you need any additional information.</pre>
</div>
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