Bug#994721: linux-image-5.10.0-0.bpo.8-amd64: Freeze on i915 Broxton with linux >=5.7 and old mesa; not prevented by intel_iommu=intgpu_off

Just to clarify: The first post of this bug (message #5) shows boot parameter `intel_iommu=off`. With that parameter, the bug does NOT reproduce. I was just using a safe environment to practice reportbug with, when it suddenly sent out the report already. To reproduce the bug, use

Bug#994721: linux-image-5.10.0-0.bpo.8-amd64: Freeze on i915 Broxton with linux >=5.7 and old mesa; not prevented by intel_iommu=intgpu_off

Hi Debian kernel team, Sorry for the short report yesterday. Reportbug sent it out earlier than I expected. Here is the full report: * What led up to the situation? On Debian 10 buster, I upgraded the linux kernel packages from 4.19+105+deb10u12 (buster) to 5.10.46-4~bpo10+1

Bug#994721: linux-image-5.10.0-0.bpo.8-amd64: Freeze on i915 Broxton with linux >=5.7 and old mesa; not prevented by intel_iommu=intgpu_off

Details to follow tomorrow (bisected already, how to reproduce)

Bug#994721: linux-image-5.10.0-0.bpo.8-amd64: Freeze on i915 Broxton with linux >=5.7 and old mesa; not prevented by intel_iommu=intgpu_off

Package: src:linux Version: 5.10.46-4~bpo10+1 Severity: important Dear Maintainer, *** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? * What exactly did you do (or not do) that was effective (or ineffective)? * What was