[Intel-gfx] system freeze on i915 system(s) due to commit aa56a292ce623734ddd30f52d73f527d1f3529b5

[howaboutsynergy at protonmail.com]

With commit aa56a292ce623734ddd30f52d73f527d1f3529b5 (even on 5.3.0-rc8) I can get a system freeze during chromium compilation (likely due to jumbo / high memory usage). Sysrq still works and CPU/fan is low, so it seems like a deadlock? and there's no disk reading. I can't read the dump gotten via kdump for some reason, else I would've shown a stacktrace by causing kernel to crash via sysrq+c.

I can easily reproduce this freeze in a matter of seconds:

please see https://bugzilla.kernel.org/show_bug.cgi?id=203317#c4

Thanks.