pkg/53632: www/firefox-60.0 segfaults when http://webglsamples.org/ is displayed

[ryoon%NetBSD.org@localhost]

>Number:         53632
>Category:       pkg
>Synopsis:       www/firefox-60.0 segfaults when http://webglsamples.org/ is displayed
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 25 14:30:00 +0000 2018
>Originator:     Ryo ONODERA
>Release:        NetBSD 8.99.25
>Organization:
	
>Environment:
	
	
System: NetBSD brownie 8.99.25 NetBSD 8.99.25 (DTRACE7) #0: Tue Sep 25 10:50:24 JST 2018 ryoon@brownie:/usr/world/8.99/amd64/obj/sys/arch/amd64/compile/DTRACE7 amd64
Architecture: x86_64
Machine: amd64
>Description:
My machine is Intel Broadwell laptop, Toshiba dynabook R73/PS.

When http://webglsamples.org/ is loaded, pkgsrc/www/firefox-60.0 exits
with segfault.

Typical last message is here:

ATTENTION: default value of option force_s3tc_enable overwritten by environment.


I have tested AccelMethod both SNA and UXA.
However there is no difference.

Setting environment variable, force_s2tc_enable=no,
firefox-60.0 dpes not segfault with the following message:

Error: WebGL warniong: Failed to create WebGL context: WebGL creation failed:
* Refused to create native OpenGL context because of blacklist entry:
* Exhausted GL driver option.


In 'Option "NoAccel" "True"' in xorg.conf case,
a drawing is extreamly slow and I cannot start firefox-60.0.
	
>How-To-Repeat:
Run pkgsrc/www/firefox-60.0 on Intel Broadwell laptop
	
>Fix:
	
I have no idea.

>Unformatted: