[Bug 108456] userptr deadlock in Vulkan CTS: mmu_notifier vs workers vs struct_mutex

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108456

--- Comment #27 from Mark Janes <mark.a.janes at intel.com> ---
With the newer kernel gpu hang is recoverable, and I have attached the error
state.  GPU hang occurs reliably running vulkancts.

I haven't seen the userptr hang yet, but the gpu hang certainly needs to be
fixed.

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