[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

Mark Janes <mark.a.janes at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |DUPLICATE

--- Comment #31 from Mark Janes <mark.a.janes at intel.com> ---
It seems likely that this bug was caused by the kernel leaks fixed by this
patch:

  https://patchwork.freedesktop.org/patch/252573/

The fix for bug 107899 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 bug 107899 ***

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