On Sat, Mar 16, 2024 at 12:10:19PM +0000, Stuart Henderson wrote:
>  10913 glxgears PSIG  SIGILL SIG_DFL code=ILL_BTCFI addr=0x21ca5a3000 trapno=905969666
> 
> Anyone have suggestions as to how to track this down any further?

This is on an apple machine?  If so it will be using llvmpipe.
To avoid the jit you can use:

LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=softpipe glxgears

Do you still see it with that?