Confirmed - the symptom is a kernel splat about "Attempting to execute
userspace memory" triggered by Xorg with LR in ttm_bo_vm_fault - see
attached screenshot (sorry!)
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Attachment added: "splat.png"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1738334/+attachment/5022893/+files/splat.png
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https://bugs.launchpad.net/bugs/1738334
Title:
hisilicon hibmc regression due to ea642c3216cb ("drm/ttm: add
io_mem_pfn callback")
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