Re: PROBLEM: Linux 5.4.237 i915 driver crashes on boot (-longterm regression)

On Tue, Mar 21, 2023 at 01:36:05AM -0400, Nick Bowler wrote:

Hi,

Linux 5.4.237 crashes immediately on my machine every time when the i915 driver is loaded, with an error like the one below. Previous versions are OK.

I bisected it to commit 1aed78cfda7f ("drm/i915: Don't use BAR mappings for ring buffers with LLC"). I can revert this on top of 5.4.237 and this seems sufficient to make the machine boot and work again.

Let me know if you need any more info.

This should be fixed in the 5.4.238-rc1 release that is out for testing right now, if not, please let me know.

thanks,

greg k-h