kern/53575: Firefox crashes unconditionally in some cases (that likely use OpenGL) - i915

[coypu%sdf.org@localhost]

>Number:         53575
>Category:       kern
>Synopsis:       Firefox crashes unconditionally in some cases (that likely use OpenGL) - i915
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 06 00:05:00 +0000 2018
>Originator:     coypu
>Release:        NetBSD 8.99.24
>Organization:
>Environment:
NetBSD localhost 8.99.24 NetBSD 8.99.24 (GENERIC) #31: Sun Sep  2 22:20:40 IDT 2018  fly@planet:/home/fly/obj/sys/arch/amd64/compile/GENERIC amd64

>Description:
- Skylake
- pkgsrc Xorg/mesa/etc.
- Firefox 61.0.2
- Have VDPAU/VA-API

Visit one of these two websites:
https://twitch.tv/directory/all - This will crash when images begin to load.
about:support


Workaround: run firefox with LIBGL_ALWAYS_SOFTWARE=1. Then these two URLs don't crash.

dmesg: http://dmesgd.nycbug.org/index.cgi?do=view&id=3729
>How-To-Repeat:

>Fix: