Quoting Sergii Romantsov (2018-09-04 03:46:23)
> Seems in case of 32-bit library, usage of msse2 makes
> some stack corruption or incorrect instructions.
> Usage with mstackrealign fixes that case.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107779
> Signed-off-by: Sergii Romantsov <[email protected]>
> ---
>  src/mesa/drivers/dri/i965/Makefile.am | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/mesa/drivers/dri/i965/Makefile.am 
> b/src/mesa/drivers/dri/i965/Makefile.am
> index 889d4c6..0afa7a2 100644
> --- a/src/mesa/drivers/dri/i965/Makefile.am
> +++ b/src/mesa/drivers/dri/i965/Makefile.am
> @@ -44,7 +44,7 @@ AM_CFLAGS = \
>         $(WNO_OVERRIDE_INIT) \
>         $(LIBDRM_CFLAGS) \
>         $(VALGRIND_CFLAGS) \
> -       -msse2
> +       -msse2 -mstackrealign
>  
>  AM_CXXFLAGS = $(AM_CFLAGS)
>  
> -- 
> 2.7.4
> 

Also, since this is extremely trivial and fixes bugs, this should be cc'd to
mesa stable for 18.1 and 18.2

Thanks,
Dylan

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