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<body><span class="vcard"><a class="email" href="mailto:mark.a.janes@intel.com" title="Mark Janes <mark.a.janes@intel.com>"> <span class="fn">Mark Janes</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - userptr deadlock in Vulkan CTS: mmu_notifier vs workers vs struct_mutex"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108456">bug 108456</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Resolution</td>
<td>FIXED
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<td>DUPLICATE
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - userptr deadlock in Vulkan CTS: mmu_notifier vs workers vs struct_mutex"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108456#c31">Comment # 31</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - userptr deadlock in Vulkan CTS: mmu_notifier vs workers vs struct_mutex"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108456">bug 108456</a>
from <span class="vcard"><a class="email" href="mailto:mark.a.janes@intel.com" title="Mark Janes <mark.a.janes@intel.com>"> <span class="fn">Mark Janes</span></a>
</span></b>
<pre>It seems likely that this bug was caused by the kernel leaks fixed by this
patch:
<a href="https://patchwork.freedesktop.org/patch/252573/">https://patchwork.freedesktop.org/patch/252573/</a>
The fix for <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - ANV driver doesn't release memory"
href="show_bug.cgi?id=107899">bug 107899</a> is in v4.19 and was applied to earlier kernels, however
some distros have not yet shipped the fix.
Mesa i965 switched to softpin for gen8+ due to this bug. The userptr deadlocks
ceased, but systems became unresponsive or OOMed after several hours of running
graphics workloads. As a result, we started thinking more about a kernel
memory leak, and Jason remembered his fix.
*** This bug has been marked as a duplicate of <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - ANV driver doesn't release memory"
href="show_bug.cgi?id=107899">bug 107899</a> ***</pre>
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