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Test program in the linked, related issue is crashing in tbx mode. Tbx server indicated upload of invalid memory was made before exit. Running with debug messages showed that the problematic upload was an svmcpu buffer when running neo with separate cpu and gpu buffers for shared memory management. Using this info, the problem was narrowed down to a missing unprotect call in page fault manager related code, resulting in a protected(invalid) memory region getting uploaded to tbx. It is unclear yet why this unprotect call was not made, since other svmcpu buffers were uploaded without issue. This hotfix forces the unprotect call in the fault handler, which allows the test program to run to completion. However, there is now a failing test case. Considering the critical nature of the associated NEO issue and that this patch should unblock the work depending on the fix, this hotfix should get merged regardless of the failing test case. In the meantime, I will continue triaging the failing test and will implement a proper fix once the root cause is isolated. Related-To: NEO-13404 Signed-off-by: Jack Myers <jack.myers@intel.com>