linux-kernel - 5.8-rc1 and later breaks chrome browser

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Message-ID: <CAH2r5msW7s-5dphNrvGCEqOGQ6tO=K5_aDVbw4ZS995oDk2Agw@mail.gmail.com>
Date:   Sat, 4 Jul 2020 15:29:11 -0500
From:   Steve French <smfrench@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>
Subject: 5.8-rc1 and later breaks chrome browser

I noticed that chrome crashes immediately on startup  on my desktop
booting to 5.8-rc2 or later kernels (whether I build the kernel or
using the prebuilt weekly Ubuntu mainline kernel downloads).  Works
fine with default kernels or 5.7 or 5.7.7 stable kernel etc. - just
breaks if I boot 5.8-rc2 or later.  I even tried building with today's
mainline kernel and same thing.  Any ideas how to work around this.

Message logged to dmesg is:

[  131.366543] ThreadPoolServi[2526]: segfault at 415048 ip
00005652def3370d sp 00007fcdc3b37df0 error 6 in
chrome[5652daa7e000+785b000]
[  131.366546] Code: Bad RIP value.

-- 
Thanks,

Steve