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    <head>
      <base href="https://bugs.freedesktop.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 - System crashes after "[drm] IP block:gmc_v8_0 is hung!" / [drm] IP block:sdma_v3_0 is hung!"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=102322">102322</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>System crashes after "[drm] IP block:gmc_v8_0 is hung!" / [drm] IP block:sdma_v3_0 is hung!
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>DRI git
          </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>critical
          </td>
        </tr>

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

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

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jb5sgc1n.nya@20mm.eu
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I consistently experience complete system crashes when browsing web pages using
firefox for about 30 minutes, with the following dmesg output from the amdgpu
driver:

[ 2330.720711] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout,
last signaled seq=40778, last emitted seq=40780
[ 2330.720768] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma1 timeout,
last signaled seq=31305, last emitted seq=31306
[ 2330.720771] [drm] IP block:gmc_v8_0 is hung!
[ 2330.720774] [drm] IP block:gmc_v8_0 is hung!
[ 2330.720775] [drm] IP block:sdma_v3_0 is hung!
[ 2330.720778] [drm] IP block:sdma_v3_0 is hung!

(Above cited messages are the last to make it to a network-filesystem by
running "dmesg -w" before the system stops to do anything.)

I am running a kernel compiled from
<a href="https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next">https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next</a> as of
"commit 94097b0f7f1bfa54b3b1f8b0d74bbd271a0564e4" (so the very latest as of
today).
My GPU is an RX 460.

Notice that this bug may be the same symptom as reported in
<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - amdgpu: [drm:amdgpu_job_timedout] *ERROR* ring gfx timeout, [drm] IP block:5 is hang"
   href="show_bug.cgi?id=98874">https://bugs.freedesktop.org/show_bug.cgi?id=98874</a>

However, the system crashes for me occur usually while vertically scrolling
through some (ordinary) web page.</pre>
        </div>
      </p>


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