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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>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - 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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<td>francesco.balestrieri@intel.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - userptr deadlock in Vulkan CTS: mmu_notifier vs workers vs struct_mutex"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108456#c20">Comment # 20</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 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>(In reply to Francesco Balestrieri from <a href="show_bug.cgi?id=108456#c18">comment #18</a>)
<span class="quote">> <a href="https://patchwork.freedesktop.org/patch/258901/">https://patchwork.freedesktop.org/patch/258901/</a>
>
> Did it help?</span >
I ran vulkancts on this system, and found that found that it encountered GPU
hang on at least 25% of vulkancts runs. Usually, this test crashed together
with the GPU Hang.
dEQP-VK.memory.pipeline_barrier.host_write_uniform_buffer.1048576
The GPU hang was unrecoverable. The system locked up and required a manual
power off. I was able to catch the dmesg log:
[ 1166.700509] [drm] GPU HANG: ecode 9:0:0x84d5fffb, in deqp-vk [18358],
reason: no progress on rcs0, action: reset
[ 1166.700510] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 1166.700510] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 1166.700511] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 1166.700511] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 1166.700512] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 1166.700591] i915 0000:00:02.0: Resetting rcs0 for no progress on rcs0
Because the system was hard-hung, I could not retrieve the error state.</pre>
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