Please ktrace and kdump | grep ILL, it should show the type of SIGILL. If 
you're on Intel 11th gen or newer there's a good chance it will be IBT-related.

Can you get any type of backtrace? Function names would give a clue as to 
where the problem lies.

-- 
  Sent from a phone, apologies for poor formatting.

On 11 March 2024 09:55:41 Laurence Tratt <laurie@tratt.net> wrote:

> Hello all,
>
> On current, with packages upto date as of Saturday, I get a consistent
> SIGILL with Google Meet and the 3 Chromium browsers I'm aware of (Chromium,
> Iridium, Ungoogled-Chromium). It seems like it might be something to do
> with webcam/video processing in these browsers, but I'm far from sure.
>
> To replicate here's what I do:
>
>  1. Open a new private window (this probably isn't important but force of
>  habit, but does mean a somewhat more consistent setup).
>
>  2. Go to meet.google.com and sign in.
>
>  3. Start a new meeting, and enable both microphone and webcam. As soon as
>  the main "you should be able to see everyone else screen" is about to
>  start, I get SIGILL.
>
> Interestingly, I can use the webcam successfully with other sites in these
> browsers, and Meet works OK in Firefox.
>
> Perhaps there's something odd about my setup that causes this --- has
> anyone else encountered it?
>
>
> Laurie