Re: i915 potential deadlock

[Alexander Coffin <alex@cyberialabs.net>]

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Hi Rodrigo,

> I'm sorry for that. Our list is moderated for non-subscribers because 
> of the amount of spams we receive daily. But I eventually got to your 
> msg and allowed it to go through.

I am sorry about sending the email twice in that case. In hindsight, I 
probably should have subscribed to the list and then sent the email to 
avoid this issue, but I don't interact with email lists that often so I 
didn't think of doing that.

> Could you please file a bug in our gitlab?

Of course. https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12677

> Well, so many things changed from 6.1... Is it possible to test with a 
> drm-tip kernel and see if it is still reproduced?

Sorry, I mispoke in my last email that 6.1 is the latest LTS release. 
6.6 is the latest LTS release. 6.1 is the default for Debian though and 
isn't considered old there, and that is the kernel that I use on my 
personal desktop, personal laptop, server, and work laptop.

I was hoping that this bug could be debugged (or at least attempted) 
with a single deadlock report (that has worked well most other times I 
have reported similar issues to kernel maintainers for other drivers).

If I knew how to recreate this issue I would gladly try out any kernel 
version for a quick test. Or if you have any things that you 
specifically want me to test then I would be happy to try a newer kernel 
version. However, I am not really comfortable daily driving a bleeding 
edge kernel version on my work laptop as of right now. I may be able to 
read through the source code to try to understand what could be 
triggering this issue and then figure out how to use that information to 
recreate it on a newer version, but as I don't think I have seen the 
issue since I reported it I'm not sure how likely it is that I stumble 
upon the issue by chance again. I would feel comfortable daily driving 
random kernels on my personal laptop, but I use an XPS 9370 for my 
personal laptop and I believe an XPS 15 9530 at work (if this is helpful 
information I can double check this and provide more system details) so 
they aren't the same hardware (I have no idea if the hardware is 
relevant).

Do you know where I could find information on the versions supported by 
Intel of the i915 driver? I can't seem to find anything from doing a few 
minutes of Google searching.

Best wishes,

Alex Coffin

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